Patent Description:
Adhesive formulations are disclosed in the following references: <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>; <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>; International Publication Nos. <CIT>, <CIT>, <CIT>, <CIT>, <CIT>; <CIT> (Abstract); <CIT> (Abstract). <CIT> relates to hot melt adhesive compositions. <CIT> relates to hot melt adhesive compositions including olefinic polymer blends and articles including the same. <CIT> relates to free radical initiator modified hot melt adhesive composition including functionalized polyethylene and propylene-alpha-olefin polymer. <CIT> relates to polyolefin based hot melt adhesive composition. <CIT> relates to a hot melt adhesive. However, as discussed, there remains a need for adhesive formulations that maintain good adhesion at high temperatures. There is a further need for such adhesives that will have good adhesion to "hard to bond" substrates.

The invention provides a composition according to appended claim <NUM>.

As discussed above, the invention provides a composition in accordance with appended claim <NUM>.

The inventive composition may comprise a combination of two or more embodiments as described herein.

Component A may comprise a combination of two or more embodiments as described herein.

Component B may comprise a combination of two or more embodiments as described herein.

In one embodiment, the anhydride and/or carboxylic acid functionalized interpolymer is an anhydride and/or carboxylic acid functionalized copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B is an anhydride grafted interpolymer, and further an anhydride grafted copolymer. One skilled in the art would understand that some anhydride groups may be converted to acid groups in the presence of moisture. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B is a maleic anhydride (MAH) grafted interpolymer, and further a maleic anhydride (MAH) grafted copolymer. One skilled in the art would understand that some maleic anhydride groups may be converted to acid groups in the presence of moisture. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B has a melt viscosity less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), and further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM>. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B has a melt viscosity greater than, or equal to, <NUM> Pa*s (<NUM> cP), further greater than, or equal to, <NUM> Pa*s (<NUM> cP), further greater than, or equal to, <NUM> Pa*s (<NUM> cP), at <NUM>. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalzed propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B has a melt viscosity from <NUM> Pa*s (<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), , and further from <NUM> Pa*s (<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM>,. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

Component B is present in an amount from <NUM> to <NUM> weight percent, based on the weight of the composition. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B has a density greater than, or equal to, <NUM>/cc, further greater than, or equal to, <NUM>/cc, further greater than, or equal to, <NUM>/cc, and further greater than, or equal to, <NUM>/cc (<NUM> cc = <NUM><NUM>). In a further embodiment, the anhydride and/or carboxylic acid functionalized interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B has a density less than, or equal to, <NUM>/cc, further less than, or equal to, <NUM>/cc, and further less than, or equal to, <NUM>/cc. In a further embodiment, the anhydride and/or carboxylic acid functionalized interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B has a density from <NUM>/cc to <NUM>/cc, further from <NUM>/cm<NUM> to <NUM>/cc, and further from <NUM>/cm<NUM> to <NUM>/cc. In a further embodiment, the anhydride and/or carboxylic acid functionalized interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of component B comprises greater than, or equal to, <NUM> weight percent, further greater than, or equal to, <NUM> weight percent, further greater than, or equal to, <NUM> weight percent, further greater than, or equal to, <NUM> weight percent, and further greater than, or equal to, <NUM> weight percent of the anhydride and/or carboxylic acid functionality, based on the weight of the polymer. In a further embodiment, the anhydride and/or carboxylic acid functionalized interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B comprises from <NUM> to <NUM> weight percent, further from <NUM> to <NUM> weight percent, further from <NUM> to <NUM> weight percent of the anhydride and/or carboxylic acid functionality, based on the weight of the polymer. In a further embodiment, the anhydride and/or carboxylic acid functionalized interpolymer is an anhydride and/or carboxylic acid functionalized copolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B comprises greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, polymerized olefin (for example, propylene or ethylene), based on the weight of the functionalized interpolymer. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B comprises less than <NUM> wt%, further less than <NUM> wt% of an acrylate. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of Component B does not comprise an acrylate. In a further embodiment, the functionalized olefin-based interpolymer is a functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer. In another embodiment, the functionalized olefin-based interpolymer is a functionalized ethylene-based interpolymer, and further a functionalized ethylene-based copolymer.

In one embodiment, the functionalized olefin-based interpolymer of component B is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer, and further a functionalized propylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized propylene-based interpolymer comprises greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, polymerized propylene, based on the weight of the functionalized interpolymer.

In one embodiment, the functionalized propylene-based interpolymer of component B is an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer, and further an anhydride and/or carboxylic acid functionalized propylene/ethylene copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized propylene-based interpolymer is an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin copolymer. Preferred α-olefins include, but are not limited to, C4-C20 α-olefins, and preferably C4-C10 α-olefins. More preferred α-olefins include <NUM>-butene, <NUM>-pentene, <NUM>-hexene, <NUM>-heptene and <NUM>-octene, further include <NUM>-butene, <NUM>-hexene and <NUM>-octene, and further <NUM>-hexene and <NUM>-octene.

In one embodiment, the anhydride and/or carboxylic acid functionalized propylene-based interpolymer is an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer, and further an anhydride and/or carboxylic acid functionalized propylene/ethylene copolymer.

In one embodiment, the functionalized olefin-based interpolymer of component B is an anhydride and/or carboxylic acid functionalized ethylene-based interpolymer, and further an anhydride and/or carboxylic acid functionalized ethylene-based copolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized ethylene-based interpolymer comprises greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, polymerized ethylene, based on the weight of the functionalized interpolymer.

In one embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer of component B is an anhydride and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymer, and further an anhydride and/or carboxylic acid functionalized ethylene/alpha-olefin copolymer. Preferred α-olefins include, but are not limited to, C3-C20 α-olefins, and preferably C3-C10 α-olefins. More preferred α-olefins include propylene, <NUM>-butene, <NUM>-pentene, <NUM>-hexene, <NUM>-heptene and <NUM>-octene, and further propylene, <NUM>-butene, <NUM>-hexene and <NUM>-octene.

Suitable functionalized olefin-based interpolymers of Component B include MAH-grafted olefin-based copolymers available from Honeywell.

An anhydride and/or carboxylic acid functionalized olefin-based interpolymer, and further an anhydride and/or carboxylic acid functionalized olefin-based copolymer, of Component B, may comprise a combination of two or more embodiments as described herein.

An anhydride and/or carboxylic acid functionalized propylene-based interpolymer, and further an anhydride and/or carboxylic acid functionalized propylene-based copolymer, of Component B, may comprise a combination of two or more embodiments as described herein.

An anhydride and/or carboxylic acid functionalized ethylene-based interpolymer, and further an anhydride and/or carboxylic acid functionalized ethylene-based copolymer, of Component B, may comprise a combination of two or more embodiments as described herein.

In one embodiment, the composition comprises from <NUM> to <NUM> weight percent, further from <NUM> to <NUM> weight percent, and further from <NUM> to <NUM> weight percent, of Component A, based on the weight of the composition.

In one embodiment, the weight ratio of Component A to Component B (A/B) is greater than, or equal to, <NUM>, further greater than, or equal to, <NUM>, and further greater than, or equal to, <NUM>.

In one embodiment, the weight ratio of Component A to Component B (A/B) is less than, or equal to, <NUM>, further less than, or equal to, <NUM>, and further less than, or equal to, <NUM>.

In one embodiment, the olefin-based polymer of Component A has a density greater than, or equal to, <NUM>/cc, further greater than, or equal to, <NUM>/cc, add further greater than, or equal to, <NUM>/cc (<NUM> cc = <NUM><NUM>). The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the olefin-based polymer of Component A has a density less than, or equal to, <NUM>/cc, and further less than, or equal to, <NUM>/cc, and further less than, or equal to, <NUM>/cc, and further less than, or equal to, <NUM>/cc, and further less than, or equal to, <NUM>/cc. In a further embodiment, the olefin-based polymer is a propylene-based polymer, further a propylene-based interpolymer, and further a propylene-based copolymer. In another embodiment, the olefin-based polymer is an ethylene-based polymer, further an ethylene-based interpolymer, and further an ethylene-based copolymer.

In one embodiment, the olefin-based polymer of Component A has a density from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc. The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the olefin-based polymer of Component A has a melt viscosity, at <NUM>, less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP). The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the olefin-based polymer of Component A has a melt viscosity less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), and further less than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F). The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the olefin-based polymer of Component A has a melt viscosity greater than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further greater than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), further greater than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), and further greater than, or equal to, <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F)The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, olefin-based polymer of Component A has a melt viscosity from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), and further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F). The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the olefin-based polymer of Component A has a molecular weight distribution (Mw/Mn) less than, or equal to, <NUM>, further less than, or equal to, <NUM>, further less than, or equal to, <NUM>, and further less than, or equal to, <NUM>. The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the olefin-based polymer of Component A has a molecular weight distribution (Mw/Mn) greater than, or equal to, <NUM>, further greater than, or equal to, <NUM>, further greater than, or equal to, <NUM>, and further greater than, or equal to, <NUM>. The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the olefin-based polymer of Component A has a melt index (I2 or MI), or calculated melt index (I2 or MI), less than, or equal to, <NUM>/<NUM>, further less than, or equal to, <NUM>/<NUM>, and further less than, or equal to, <NUM>/<NUM>. The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin based copolymer.

In one embodiment, the olefin-based polymer of Component A has a melt flow rate (MFR) less than, or equal to, <NUM>/<NUM>, further less than, or equal to, <NUM>/<NUM>, and further less than, or equal to, <NUM>/<NUM>.

In one embodiment, the olefin-based polymer of Component A comprises greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, polymerized olefin (for example, propylene or ethylene), based on the weight of the polymer. The olefin-based polymer is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

The olefin-based polymer of Component A is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer.

In one embodiment, the ethylene-based polymer comprises greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, further greater than, or equal to, <NUM> wt%, polymerized ethylene, based on the weight of the polymer. The ethylene-based polymer is an ethylene/alpha-olefin based copolymer.

The polymer of Component A is an ethylene/alpha-olefin copolymer. Preferred α-olefins include, but are not limited to, C3-C20 α-olefins, and preferably C3-C10 α-olefins. More preferred α-olefins include propylene, <NUM>-butene, <NUM>-pentene, <NUM>-hexene, <NUM>-heptene and <NUM>-octene, further include propylene, <NUM>-butene, <NUM>-hexene and <NUM>-octene, and further <NUM>-butene, <NUM>-hexene and <NUM>-octene.

In one embodiment, the ethylene/alpha-olefin copolymer of Component A has a percent crystallinity of less than, or equal to, <NUM> percent, further less than, or equal to, <NUM> percent, further less than, or equal to, <NUM> percent, further less than, or equal to, <NUM> percent, and further less than, or equal to, <NUM> percent, as determined by DSC.

In one embodiment, the ethylene/alpha-olefin copolymer of Component A has a percent crystallinity of greater than, or equal to, <NUM> percent, further greater than, or equal to, <NUM> percent, and further greater than, or equal to, <NUM> percent, as determined by DSC.

In one embodiment, Component A is a homogeneously branched linear copolymer, or a homogeneous branched substantially linear copolymer.

In one embodiment, Component A is a homogeneous branched linear copolymer.

In one embodiment, Component A is a homogeneous branched substantially linear copolymer.

Some examples of ethylene/α-olefin interpolymers and copolymers include AFFINITY GA Polyolefin Plastomers, available from The Dow Chemical Company, and LICOCENE Performance Polymers from Clariant. Other examples of ethylene/α-olefin interpolymers and copolymers suitable for the invention include the ultra low molecular weight ethylene polymers described in <CIT>, <CIT> and <CIT>.

The olefin-based polymer of Component A may comprise a combination of two or more embodiments as described herein.

The ethylene-based polymer of Component A may comprise a combination of two or more embodiments as described herein.

In one embodiment, the composition has a melt viscosity at <NUM> from <NUM> to <NUM> Pa*s (<NUM> to <NUM> cP), further from <NUM> to <NUM> Pa*s (<NUM> to <NUM> cP), further from <NUM> to <NUM> Pa*s (<NUM> to <NUM> cP), and further from <NUM> to <NUM> Pa*s (<NUM> to <NUM> cP).

In one embodiment, the olefin-based polymer of Component A has a density from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc. In a further embodiment, the density ratio of Component B to Component A is greater than, or equal to, <NUM>, further greater than, or equal to, <NUM>, further greater than, or equal to, <NUM>. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer (Component B) is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer or copolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer or copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer or copolymer.

In one embodiment, the olefin-based polymer of Component A has a density from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc. In a further embodiment, the density ratio of Component B to Component A is less than, or equal to, <NUM>, further less than, or equal to, <NUM>, further less than, or equal to, <NUM>. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer (Component B) is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer or copolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer or copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer or copolymer.

In one embodiment, the olefin-based polymer of Component A has a density from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc. In a further embodiment, the density ratio of Component B to Component A is from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer (Component B) is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer or copolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer or copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer or copolymer.

In one embodiment, olefin-based polymer of Component A has a melt viscosity from <NUM> Pa*s to <NUM> Pa*s (<NUM>,<NUM> cP to <NUM>,<NUM> cP), further from <NUM> Pa*s to <NUM> Pa*s (<NUM>,<NUM> cP to <NUM>,<NUM> cP), further from <NUM> Pa*s to <NUM> Pa*s (<NUM>,<NUM> cP to <NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s to <NUM> Pa*s (<NUM>,<NUM> cP to <NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s to <NUM> Pa*s (<NUM>,<NUM> cP to <NUM>,<NUM> cP), at <NUM> (<NUM>°F), and further from <NUM>,<NUM> cP to <NUM>,<NUM> cP, at <NUM> (<NUM>°F). In a further embodiment, the ratio of the "melt viscosity (at <NUM>) of Component A" to "the melt viscosity (at <NUM>) of Component B" is from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer (Component B) is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer or copolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer or copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer or copolymer.

In one embodiment, the olefin-based polymer of Component A has a density from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, further from <NUM>/cc to <NUM>/cc, and further from <NUM>/cc to <NUM>/cc; and Component A has a melt viscosity from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), and further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F). In a further embodiment, density ratio of Component B to Component A is from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>; and the ratio of "the melt viscosity (at <NUM>) of Component A" to "the melt viscosity (at <NUM>) of Component B" is from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>, further from <NUM> to <NUM>. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer (Component B) is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer or copolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer or copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer or copolymer.

In one embodiment, sum weight of Component B to Component A is greater than, or equal to, <NUM> wt%, or greater than, or equal to, <NUM> wt%, or greater than, or equal to, <NUM> wt%, or greater than, or equal to, <NUM> wt%, or greater than, or equal to, <NUM> wt%, based on the weight of the composition. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer (Component B) is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer or copolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer or copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer or copolymer.

In one embodiment, olefin-based polymer of Component A has a melt viscosity from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F), and further from <NUM> Pa*s (<NUM>,<NUM> cP) to <NUM> Pa*s (<NUM>,<NUM> cP), at <NUM> (<NUM>°F). In a further embodiment, Component A has the highest melt viscosity (at <NUM>) of all of the polymer components of the composition. In a further embodiment, the anhydride and/or carboxylic acid functionalized olefin-based interpolymer (Component B) is an anhydride and/or carboxylic acid functionalized propylene-based interpolymer or copolymer, and further an anhydride and/or carboxylic acid functionalized propylene/alpha-olefin interpolymer or copolymer, or an anhydride and/or carboxylic acid functionalized propylene/ethylene interpolymer or copolymer.

An inventive composition may comprise two or more embodiments described here.

Component A may comprise a combination of two or more embodiments described herein.

Component B may comprise a combination of two or more embodiments described herein.

The composition further comprises a wax.

Waxes include, but are not limited to, paraffin waxes, microcrystalline waxes, high density, low molecular weight polyethylene waxes, polypropylene waxes, thermally degraded waxes, by-product polyethylene waxes, Fischer-Tropsch waxes, oxidized Fischer-Tropsch waxes, and functionalized waxes, such as hydroxy stearamide waxes and fatty amide waxes. It is common in the art to use the terminology "synthetic high melting point waxes" to include high density, low molecular weight polyethylene waxes, by-product polyethylene waxes and Fischer-Tropsch waxes. Other waxes also include those described in <CIT>; <CIT> and <CIT>. Preferred waxes include, but are not limited to, SASOL waxes (e.g., SASOLWAX H1 from Sasol Wax Company), and Fischer-Tropsch waxes.

In one embodiment, the composition comprises from <NUM> to <NUM> weight percent, and further from <NUM> to <NUM> weight percent, and further from <NUM> to <NUM> weight percent of the wax, based on the weight of the composition.

In one embodiment, the composition further comprises a tackifier.

Suitable tackifying resins include, but are not limited to, aliphatic, cycloaliphatic and aromatic hydrocarbons, and modified hydrocarbons and hydrogenated versions; terpenes and modified terpenes and hydrogenated versions; and rosins and rosin derivatives and hydrogenated versions; and mixtures thereof. Suitable tackifiers include, but are not limited to, EASTOTAC H100 and EASTOTAC H115, each available from Eastman Chemical.

In one embodiment, the composition comprises from <NUM> to <NUM> weight percent, and further from <NUM> to <NUM> weight percent, further from <NUM> to <NUM> weight percent of the tackifier. In a further embodiment, the tackifier is a hydrocarbon, and further a hydrogenated hydrocarbon.

In one embodiment, the composition is subject to a mechanical homogenizer process to reduce the viscosity of the composition. The intense energy and mechanical forces, formed from such a process, cause turbulence and localized pressure differences, which create shear on particles and cause molecular chain scission.

An inventive composition may comprise a combination of two or more embodiments described herein.

The invention also provides an article comprising an inventive composition.

In a further embodiment, the article further comprises a substrate. In a further embodiment, the substrate is selected from the group consisting of the following: coated substrates, a recycled paper, and combinations thereof.

In one embodiment, the substrate is selected from the group consisting of the following: wax coated Kraft or carton, polyethylene coated Kraft or carton, BOPP film laminated Kraft or carton, polypropylene (PP) film laminated Kraft or carton, PET film laminated Kraft or carton, clay coated Kraft or carton, lacquer coated Kraft or carton, and combinations thereof.

In a further embodiment, the substrate is selected from the group consisting of the following:.

An inventive article may comprise a combination of two or more embodiments as described herein.

An inventive composition may comprise one or more additives. Typically polymers and resins used in the invention are treated with one or more stabilizers, for example, antioxidants, such as IRGANOX <NUM>, IRGANOX <NUM>, and IRGAFOS <NUM>, now supplied by BASF. Polymers are typically treated with one or more stabilizers before an extrusion or other melt processes. Other additives include, but are not limited to, ultraviolet light absorbers, antistatic agents, pigments and dyes, nucleating agents, fillers, slip agents, fire retardants, plasticizers, processing aids, lubricants, stabilizers, smoke inhibitors, viscosity control agents and anti-blocking agents. An inventive composition may also contain one or more thermoplastic polymers.

The inventive compositions may further comprise an oil. Oils are typically employed to reduce the viscosity of the adhesive. When employed, oils will be typically present in an amount greater than <NUM> weight percent, and less than <NUM>, preferably less than <NUM>, and more preferably less than <NUM> weight percent, based on the weight of the composition. Exemplary classes of oils include, but are not limited to, white mineral oil (such as KAYDOL oil available from Witco), and SHELLFLEX <NUM> naphthenic oil (available from Shell Oil Company) and CALSOL <NUM> (napthenic oil from Calumet Lubricants).

The inventive compositions may be prepared by standard melt blending procedures. In particular, the functionalized polymer (e.g., a maleic anhydride-grafted polymer) tackifier(s) and other components may be melt blended until a homogeneous mix is obtained. Any mixing method producing a homogeneous blend, without degrading the adhesive components, is satisfactory, such as a vessel equipped with a stirrer, and an optional heating mechanism. The adhesives can be provided in forms, such as pellets, pillows, chiclets, drages, or any other desired configurations.

The inventive compositions may also be used in a variety of application, including, but not limited to, case and carton sealing, automotive, graphic arts, nonwovens, panel assembly, high performance tapes, contact hot melt adhesives, paperboard coatings, inks, personal care and cosmetic products, sealants, color and additive concentrates, carpet-tape adhesives, woodworking adhesives, and profile wrap adhesives.

Unless stated to the contrary, all test methods are current as of the filing date of this disclosure.

The term "composition," as used herein, includes a mixture of materials which comprise the composition, as well as reaction products and decomposition products formed from the materials of the composition.

The term "polymer," as used herein, refers to a polymeric compound prepared by polymerizing monomers, whether of the same or a different type. The generic term polymer thus embraces the term homopolymer (employed to refer to polymers prepared from only one type of monomer, with the understanding that trace amounts of impurities can be incorporated into the polymer structure), and the term interpolymer as defined hereinafter. Trace amounts of impurities, for example, catalyst residues, may be incorporated into and/or within the polymer.

The term "interpolymer," as used herein, refers to polymers prepared by the polymerization of at least two different types of monomers. The generic term interpolymer thus includes copolymers (employed to refer to polymers prepared from two different types of monomers), and polymers prepared from more than two different types of monomers.

The term, "olefin-based polymer," as used herein, refers to a polymer that comprises, in polymerized form, a majority amount of olefin monomer, for example ethylene or propylene (based on the weight of the polymer), and optionally may comprise one or more comonomers.

The term, "olefin-based interpolymer," as used herein, refers to an interpolymer that comprises, in polymerized form, a majority amount of olefin monomer, for example ethylene or propylene (based on the weight of the interpolymer), and at least one comonomer.

The term, "olefin-based copolymer," as used herein, refers to a copolymer that comprises, in polymerized form, a majority amount of olefin monomer, for example ethylene or propylene (based on the weight of the copolymer), and a comonomer, as the only two monomer types.

The term, "ethylene-based polymer," as used herein, refers to a polymer that comprises, in polymerized form, a majority amount of ethylene monomer (based on the weight of the polymer), and optionally may comprise one or more comonomers.

The term, "ethylene-based interpolymer," as used herein, refers to an interpolymer that comprises, in polymerized form, a majority amount of ethylene monomer (based on the weight of the interpolymer), and at least one comonomer.

The term, "ethylene-based copolymer," as used herein, refers to a copolymer that comprises, in polymerized form, a majority amount of ethylene monomer (based on the weight of the copolymer), and a comonomer, as the only two monomer types.

The term, "ethylene/α-olefin interpolymer," as used herein, refers to an interpolymer that comprises, in polymerized form, a majority amount of ethylene monomer (based on the weight of the interpolymer), and at least one α-olefin.

The term, "ethylene/α-olefin copolymer," as used herein, refers to a copolymer that comprises, in polymerized form, a majority amount of ethylene monomer (based on the weight of the copolymer), and an α-olefin, as the only two monomer types.

The term, "propylene-based polymer," as used herein, refers to a polymer that comprises, in polymerized form, a majority amount of propylene monomer (based on the weight of the polymer), and optionally may comprise one or more comonomers.

The term, "propylene-based interpolymer," as used herein, refers to an interpolymer that comprises, in polymerized form, a majority amount of propylene monomer (based on the weight of the interpolymer), and at least one comonomer.

The term, "propylene-based copolymer," as used herein, refers to a copolymer that comprises, in polymerized form, a majority amount of propylene monomer (based on the weight of the copolymer), and a comonomer, as the only two monomer types.

The term, "propylene/α-olefin interpolymer," as used herein, refers to an interpolymer that comprises, in polymerized form, a majority amount of propylene monomer (based on the weight of the interpolymer), and at least one α-olefin.

The term, "propylene/α-olefin copolymer," as used herein, refers to a copolymer that comprises, in polymerized form, a majority amount of propylene monomer (based on the weight of the copolymer), and an α-olefin, as the only two monomer types.

The term, "propylene/ethylene interpolymer," as used herein, refers to an interpolymer that comprises, in polymerized form, a majority amount of propylene monomer (based on the weight of the interpolymer), and ethylene.

The term, "propylene/ethylene copolymer," as used herein, refers to a copolymer that comprises, in polymerized form, a majority amount of propylene monomer (based on the weight of the copolymer), and ethylene, as the only two monomer types.

The term "anhydride and/or carboxylic acid functionalized olefin-based interpolymer," and similar terms, as used herein, refer to an interpolymer (or copolymer) comprising bonded anhydride groups and/or bonded carboxylic acid groups. For example, a maleic anhydride functionalized olefin-based interpolymer.

The terms "comprising," "including," "having," and their derivatives, are not intended to exclude the presence of any additional component, step or procedure, whether or not the same is specifically disclosed. In order to avoid any doubt, all compositions claimed through use of the term "comprising" may include any additional additive, adjuvant, or compound, whether polymeric or otherwise, unless stated to the contrary. In contrast, the term, "consisting essentially of" excludes from the scope of any succeeding recitation any other component, step or procedure, excepting those that are not essential to operability. The term "consisting of" excludes any component, step or procedure not specifically delineated or listed.

The terms "homogeneous" and "homogeneously-branched" are used in reference to an ethylene/α-olefin interpolymer, in which the α-olefin comonomer is randomly distributed within a given polymer molecule, and all of the polymer molecules have the same or substantially the same comonomer-to-ethylene ratio.

The homogeneously branched linear ethylene interpolymers are ethylene polymers, which lack long chain branching, but do have short chain branches, derived from the comonomer polymerized into the interpolymer, and which are homogeneously distributed, both within the same polymer chain, and between different polymer chains. These ethylene/α-olefin interpolymers have a linear polymer backbone, no measurable long chain branching, and a narrow molecular weight distribution. This class of polymers is disclosed, for example, by Elston in <CIT>, and subsequent processes to produce such polymers, using bis-metallocene catalysts, have been developed, as shown, for example, in <CIT>; <CIT>; <CIT>; <CIT>; <CIT>; <CIT>; and <CIT>. As discussed, the homogeneously branched linear ethylene interpolymers lack long chain branching, just as is the case for the linear low density polyethylene polymers or linear high density polyethylene polymers. Commercial examples of homogeneously branched linear ethylene/α-olefin interpolymers include TAFMER polymers from the Mitsui Chemical Company, and EXACT and EXCEED polymers from ExxonMobil Chemical Company.

The homogeneously branched substantially linear ethylene/α-olefin interpolymers are described in <CIT>; <CIT>; <CIT>; <CIT> and <CIT>. The substantially linear ethylene/α-olefin interpolymers have long chain branching. The long chain branches have the same comonomer distribution as the polymer backbone, and can have about the same length as the length of the polymer backbone. "Substantially linear," typically, is in reference to a polymer that is substituted, on average, with "<NUM> long chain branches per <NUM> carbons" to "<NUM> long chain branches per <NUM> carbons. " The length of a long chain branch is longer than the carbon length of a short chain branch, formed from the incorporation of one comonomer into the polymer backbone.

Some polymers may be substituted with <NUM> long chain branches per <NUM> total carbons to <NUM> long chain branch per <NUM> total carbons, further from <NUM> long chain branches per <NUM> total carbons to <NUM> long chain branch per <NUM> total carbons, and further from <NUM> long chain branches per <NUM> total carbons to <NUM> long chain branch per <NUM> total carbons.

The substantially linear ethylene/α-olefin interpolymers form a unique class of homogeneously branched ethylene polymers. They differ substantially from the well-known class of conventional, homogeneously branched linear ethylene/α-olefin interpolymers, as discussed above, and, moreover, they are not in the same class as conventional heterogeneous "Ziegler-Natta catalyst polymerized" linear ethylene polymers (for example, ultra low density polyethylene (ULDPE), linear low density polyethylene (LLDPE) or high density polyethylene (HDPE), made, for example, using the technique disclosed by <CIT>); nor are they in the same class as high pressure, free-radical initiated, highly branched polyethylenes, such as, for example, low density polyethylene (LDPE), ethylene-acrylic acid (EAA) copolymers and ethylene vinyl acetate (EVA) copolymers.

The homogeneously branched, substantially linear ethylene/α-olefin interpolymers useful in the invention have excellent processability, even though they have a relatively narrow molecular weight distribution. Surprisingly, the melt flow ratio (I10/I2), according to ASTM D <NUM>, of the substantially linear ethylene interpolymers can be varied widely, and essentially independently of the molecular weight distribution (Mw/Mn or MWD). This surprising behavior is contrary to conventional homogeneously branched linear ethylene interpolymers, such as those described, for example, by <CIT>, and heterogeneously branched, conventional "Ziegler-Natta polymerized," linear polyethylene interpolymers, such as those described, for example, by <CIT>. Unlike substantially linear ethylene interpolymers, linear ethylene interpolymers (whether homogeneously or heterogeneously branched) have rheological properties, such that, as the molecular weight distribution increases, the I10/I2 value also increases.

Long chain branching can be determined by using 13C Nuclear Magnetic Resonance (NMR) spectroscopy, and can be quantified using the method of <NPL>). Two other methods are Gel Permeation Chromatography, couple with a Low Angle Laser Light Scattering detector (GPCLALLS), and Gel Permeation Chromatography, coupled with a Differential Viscometer detector (GPC-DV). The use of these techniques for long chain branch detection, and the underlying theories, have been well documented in the literature. See, for example, <NPL>), and <NPL>.

In contrast to "substantially linear ethylene polymer," "linear ethylene polymer" means that the polymer lacks measurable or demonstrable long chain branches, that is, the polymer is substituted with an average of less than <NUM> long chain branch per <NUM> carbons.

Melt viscosity (of a polymer or a composition) is measured in accordance with ASTM D <NUM> (<NUM>, <NUM>°F), using a Brookfield Digital Viscometer (Model DV-III, version <NUM>), and disposable aluminum sample chambers. The spindle used, in general, is a SC-<NUM> hotmelt spindle, suitable for measuring viscosities in the range from <NUM> to <NUM> Pa*s (<NUM> to <NUM>,<NUM> centipoise). The sample is added to the chamber, which is, in turn, inserted into a Brookfield Thermosel, and locked into place. The sample chamber has a notch on the bottom that fits the bottom of the Brookfield Thermosel, to ensure that the chamber is not allowed to turn, when the spindle is inserted and spinning. The sample (approximately <NUM>-<NUM> grams of resin) is heated to the required temperature, until the melted sample is about <NUM> (one inch) below the top of the sample chamber. The viscometer apparatus is lowered, and the spindle submerged into the sample chamber. Lowering is continued, until the brackets on the viscometer align on the Thermosel. The viscometer is turned on, and set to operate at a shear rate, which leads to a torque reading in the range of <NUM> to <NUM> percent of the total torque capacity, based on the rpm output of the viscometer. Readings are taken every minute for about <NUM> minutes, or until the values stabilize, at which point, a final reading is recorded.

Melt viscosity (of a polymer or a composition) at <NUM> can be measured as described above.

Melt index (<NUM>, or MI) of an ethylene-based polymer is measured in accordance with ASTM D-<NUM>, condition <NUM>/<NUM>. For high I2 polymers (I2 greater than, or equal to, <NUM>/mole, melt index is preferably calculated from Brookfield viscosity as described in <CIT>; <CIT>; <CIT>. I2(<NUM>/<NUM>) = <NUM>[<NUM>(log(η)-<NUM>)/-<NUM>]-<NUM>, where η= melt viscosity, in Pa*s (cP), at <NUM> (<NUM>°F).

The peel adhesion failure temperature (PAFT) and shear adhesion failure temperature (SAFT) of the adhesive formulation were tested using ASTM D-<NUM>. Four samples (two for PAFT and two for SAFT) were put in a programmable oven, then "<NUM> weights" for PAFT, and "<NUM> weights" for SAFT, were attached to the samples.

Two sheets of <NUM> x <NUM> (<NUM>"x12") Kraft paper were used for lamination. Bottom sheet has two pieces of masking tape separated by a <NUM> (one inch) gap. The adhesive was spread by a bottom glass rod that is shimmed with tape. A top glass rod supplies compression. Silicone paper at the end was to catch the excess adhesive. The final bond was defined by the two pieces of masking tape and was <NUM> (<NUM> inch) wide. The molten adhesive was heated to <NUM>, and poured onto the bottom sheet. The glass rods were then quickly drawn across to make the lamination. The laminated sheet was trimmed, and cut widthwise into "<NUM> (one inch) wide strips. " These strips had a "<NUM> x <NUM> (<NUM> inch x <NUM> inch) bond" in the center. The samples were conditioned for <NUM> hours at room temperature and <NUM> percent RH (Relative Humidity). Then the samples were placed in the oven, with <NUM> in a peel mode, and <NUM> in a shear mode. The oven temperature was increased at a rate of <NUM>/h. The samples were hung from a switch that tripped when the samples failed, and the time and temperature were recorded by a computer. Average results were reported.

The heat stress resistance was measured according to the "<NPL>. To prepare one sample, two cardboard coupons (cut with flutes running in the long direction) having dimensions of "<NUM> x <NUM> (<NUM> inch x <NUM>-<NUM>/<NUM> inch)" and "<NUM> x <NUM> (<NUM> inch x <NUM>-<NUM>/<NUM> inch)" were bonded, by applying "<NUM>/m (<NUM> lb/in) of adhesive" with an Olinger Bond Tester. The adhesive was applied perpendicular to the flutes, in the center of the shorter coupon, and the coupons were bonded, such that the adhesive was <NUM> (¾ inch) from one end of the long coupon. Five replicates were made for each formulation. Samples were loaded into the sample holder, with the short coupon end aligned with the edge of the sample holder. The samples were held in place with the wide plate secured by wingnuts. A "<NUM> weight" was placed <NUM> (<NUM> inch) from the bond. The weight was secured by placing the peg, on the weight, into a hole made in the long coupon. The sample holder was then placed into a convection oven, at a set temperature, for <NUM> hours. If at least <NUM>% of the bonds do not fail, than the sample was considered to have passing heat resistance at the test temperature. The oven temperature was varied, until the maximum "passing" temperature was determined. All new bonded coupon samples were used for each test temperature.

The percentage of fiber tear of each adhesive sample was evaluated on a "hard to bond" substrate (see Experimental section) at three different temperatures; room temperature, -<NUM> and <NUM>. The fiber tear results using a Hard-To-Bond (HTB) substrate were recorded. The adhesive was heated to <NUM> (<NUM>°F), and was applied on the substrate cut into "<NUM> x <NUM> (<NUM> inch x <NUM> inch)" rectangular sheets. The adhesive to be tested was applied, running lengthwise, as about a "<NUM>(<NUM> in)" wide strip, and was drawn down with a spatula or hot melt applicator. Then a second strip was applied, within two seconds, and held, with moderate pressure (<NUM> Pa), for five seconds to laminate.

The bonds were conditioned for <NUM> hours at room temperature and <NUM> percent RH (Relative Humidity), and then pulled apart at the test temperatures of room temperature, -<NUM> or <NUM>. Each bond was tested immediately, after the conditioning period ended. The bond was torn by inserting the blade of a spatula under one corner to fold up the corner. The bond was then placed on a horizontal surface, with the side with the folded corner faced up. With the laminate held as near as possible to the source of heating or cooling, in order to maintain the conditioning temperature, the folded corner was manually pulled as rapidly, as possible, at roughly a <NUM> to <NUM> degree angle, relative to each sheet's lengthwise axis, to tear the adhesive bond. The percent of torn fiber was estimated (fiber tear or FT) in <NUM> percent increments; that is, <NUM> percent, <NUM> percent, <NUM> percent, <NUM> percent and <NUM> percent. Unless otherwise stated, the Fiber Tear test is normally repeated on five replicate samples, and the average of these five runs reported.

The average molecular weights and molecular weight distributions for ethylene-base polymers are determined with a chromatographic system, consisting of either a Polymer Laboratories Model PL-<NUM> or a Polymer Laboratories Model PL-<NUM>. The column and carousel compartments are operated at <NUM> for ethylene-based polymers. The columns are three Polymer Laboratories <NUM>-micron, Mixed-B columns. The solvent is <NUM>,<NUM>,<NUM>-trichlorobenzene. The samples are prepared at a concentration of "<NUM> gram of polymer" in "<NUM> milliliters" of solvent. The solvent used to prepare the samples contains "<NUM> ppm of butylated hydroxytoluene (BHT). " Samples are prepared by agitating lightly for two hours at <NUM>. The injection volume is "<NUM> microliters," and the flow rate is "<NUM> milliliters/minute. " Calibration of the GPC column set is performed with narrow molecular weight distribution polystyrene standards, purchased from Polymer Laboratories (UK). The polystyrene standard peak molecular weights are converted to polyethylene molecular weights using the following equation (as described in <NPL>)): <MAT> where M is the molecular weight, A has a value of <NUM> and B is equal to <NUM>. Polyethylene equivalent molecular weight calculations were performed using VISCOTEK TriSEC software Version <NUM>. The molecular weights for polypropylene-based polymers can be determined using Mark-Houwink ratios according to ASTM D6474. <NUM>-<NUM>, where, for polystyrene a = <NUM> and log K = -<NUM>, and for polypropylene, a = <NUM> and log K = -<NUM>. For polypropylene-based samples, the column and carousel compartments are operated at <NUM>.

Differential Scanning Calorimetry (DSC) is used to measure crystallinity in ethylene (PE) based polymer samples and propylene (PP) based polymer samples. About five to eight milligrams of sample is weighed and placed in a DSC pan. The lid is crimped on the pan to ensure a closed atmosphere. The sample pan is placed in a DSC cell, and then heated, at a rate of approximately <NUM>/min, to a temperature of <NUM> for PE (<NUM> for PP). The sample is kept at this temperature for three minutes. Then the sample is cooled at a rate of <NUM>/min to -<NUM> for PE (-<NUM> for PP), and kept isothermally at that temperature for three minutes. The sample is next heated at a rate of <NUM>/min, until complete melting (second heat). The percent crystallinity is calculated by dividing the heat of fusion (Hf), determined from the second heat curve, by a theoretical heat of fusion of <NUM> J/g for PE (<NUM> J/g, for PP), and multiplying this quantity by <NUM> (e.g., for PE, % cryst. = (Hf / <NUM> J/g) x <NUM>; and for PP, % cryst. = (Hf / <NUM> J/g) x <NUM>).

Unless otherwise stated, melting point(s) (Tm) of each polymer is determined from the second heat curve obtained from DSC, as described above. The crystallization temperature (Tc) is measured from the first cooling curve.

Density is measured in accordance with ASTM D-<NUM>.

The concentration of maleic anhydride can be determined by the ratio of peak heights of the maleic anhydride at wave number <NUM>-<NUM> to the polymer reference peak, which, in case of polyethylene, is at wave number <NUM>-<NUM>. Maleic anhydride content is calculated by multiplying this ratio with the appropriate calibration constant. The equation used for maleic grafted polyolefins (with reference peak for polyethylene) has the following form, as shown in Equation <NUM>.

The calibration constant A can be determined using C13 NMR standards. The actual calibration constant may differ slightly depending on the instrument and polymer. The second component at wave number <NUM>-<NUM> accounts for the presence of maleic acid, which is negligible for freshly grafted material. Over time however, maleic anhydride is readily converted to maleic acid in the presence of moisture. Depending on surface area, significant hydrolysis can occur in just a few days under ambient conditions. The acid has a distinct peak at wave number <NUM>-<NUM>. The constant B in Equation <NUM> is a correction for the difference in extinction coefficients between the anhydride and acid groups.

The sample preparation procedure begins by making a pressing, typically <NUM> to <NUM> millimeters in thickness, in a heated press, between two protective films, at <NUM>-<NUM> for one hour. MYLAR and TEFLON are suitable protective films to protect the sample from the platens. Aluminum foil must never be used (maleic anhydride reacts with aluminum). Platens should be under pressure (-<NUM> (-<NUM> ton)) for about five minutes. The sample is allowed to cool to room temperature, placed in an appropriate sample holder, and then scanned in the FTIR. A background scan should be run before each sample scan, or as needed. The precision of the test is good, with an inherent variability of less than ± <NUM>%. Samples should be stored with desiccant to prevent excessive hydrolysis. Moisture content has been measured as high as <NUM> weight percent. The conversion of anhydride to acid however is reversible with temperature, but may take up to one week for complete conversion. The reversion is best performed in a vacuum oven at <NUM>; a good vacuum (near <NUM> (<NUM> inches) Hg) is required. If the vacuum is less than adequate the sample tends to oxidize resulting in an infrared peak at approximately <NUM>-<NUM>, which will cause the values for the graft level to be too low. Maleic anhydride and acid are represented by peaks at about <NUM> and <NUM>-<NUM>, respectively.

The polymers, compositions and processes of this invention, and their use, are more fully described by the following examples. The following examples are provided for the purpose of illustrating the invention, and are not to be construed as limiting the scope of the invention.

Functionalized polymers (each available from Honeywell) are shown in Table <NUM>.

Adhesive components are listed below. Adhesive formulations are shown in Tables <NUM>-<NUM>.

AFFINITY GA <NUM> (ethylene/octene copolymer; melt viscosity at <NUM> (<NUM>°F) <NUM> - <NUM> cP, and density <NUM> - <NUM>/cm<NUM>.

Low molecular weight propylene/octene copolymer (Low MW PP) melt viscosity at <NUM> (<NUM>°F) = <NUM> cP, and a density of <NUM>/cc (<NUM> cc = <NUM><NUM>).

Tackifier: EASTOTAC H115, supplied by Eastman Chemical Company.

Wax: SASOLWAX H1, a Fischer-Tropsch wax, supplied by Sasol Wax.

IRGANOX <NUM> (I1010) was used as antioxidant.

The "Hard-to-Bond (HTB)" substrate was BOPP (Biaxial Oriented Polypropylene) laminated substrate. Other hard-to-bond substrates, as discussed above, may also be used.

Components for the adhesive compositions were weighed into an aluminum container, and preheated in an oven, at <NUM> for one hour. The components in the container were then mixed in a heated block at <NUM> for <NUM> minutes, with a "Paravisc style" mixer head at <NUM> RPM. Each adhesive composition contained the following: polymer, wax, tackifier resin, and antioxidant. The wax, tackifier and antioxidant are each described above.

As seen in Table <NUM>, increasing the amount of the AC-596P in the formulations, resulted in improved SAFT, PAFT and/or Heat Stress. Adhesion to the HTB substrate also improved, especially at <NUM>. In Reference Example <NUM>, the adhesion on HTB was greater than <NUM>% at RT and <NUM>. In Examples <NUM> and <NUM>, high Heat Stress values (<NUM>) resulted.

As seen in Table <NUM>, increasing the amount of the AC-596P in the formulations, resulted in improved SAFT, PAFT, Fiber Tear and/or Heat Stress. Reference Example <NUM> had excellent overall adhesive performance with the highest level of AC-596P. Compared with Reference Example <NUM>, having no AC-596P, the adhesive performance of Reference Example <NUM> improved significantly: PAFT had <NUM> increase; Heat stress had > <NUM> increase to reach a target at <NUM>; Fiber tear (HTB) at <NUM> and RT were also improved to excellent levels.

As seen in Table <NUM>, increasing the amount of the AC-596P in the formulations, resulted in improved SAFT, PAFT, Fiber Tear and/or Heat Stress. Reference Example <NUM> had excellent adhesive performance with <NUM> wt% replacement of the SASOL H1 wax with the AC-596P.

Overall, with more AC-596P content, the adhesive performance improved.

Overall, the MAH grafted wax (Honeywell AC-596P as a representative example) significantly improved adhesive performances in adhesives based on a low MW PP polymer. In general, PAFT/SAFT and heat stress properties have dramatically improved (> <NUM>) with increasing content of "MAH-functionalized low molecular weight polymer" in the formulation. The adhesion on HTB substrates also improved, especially at RT and <NUM>. Also, the polymer (Low MW PP) content was able to reach high level of <NUM> wt%, and still maintain good adhesive performance.

Claim 1:
A composition comprising the following components:
A) an olefin-based polymer, wherein the olefin-based polymer of component A is an ethylene-based polymer, wherein the ethylene-based polymer is an ethylene/alpha-olefin copolymer;
B) an anhydride and/or carboxylic acid functionalized olefin-based interpolymer comprising the following properties:
i) a melt viscosity, at <NUM>, less than, or equal to, <NUM> Pas (<NUM>,<NUM> cP), and
ii) a density from <NUM> to <NUM>/cc;
C) a wax;
wherein the composition has a melt viscosity at <NUM> of from <NUM> to <NUM> Pas (<NUM> to <NUM> cP);
wherein component B is present in an amount from <NUM> to <NUM> weight percent, based on the weight of the composition.