Patent ID: 8399531
Filing Date: 2013-03-19
Classification: B29C,B60R,B62D,C08J,C08L

Abstract:
1. A foamable composition consisting essentially of: (i) at least 50 wt % of at least one copolymer of ethylene and alkyl (meth)acrylate having a broad chemical composition distribution with a standard deviation σ>0.1 as determined by interaction polymer chromatography, and having a melt index between about 15 and about 25 g/10 min, measured at 190° C. and 2.16 kg according to ASTM D1238; (ii) from about 2 to about 40 wt % of at least one polyolefin; said polyolefin consisting essentially of copolymerized residues of ethylene and one or more comonomers comprising a carboxylic and functionality or a carboxylic acid anhydride functionality, and, optionally, copolymerized residues of one or more of a second alpha-olefin, vinyl acetate, and an alkyl (meth)acrylate; and said polyolefin optionally further comprising about 0.5 to about 1.5 wt % of one or more tackifiers; (iii) from about 1 to about 10 wt % of one or more foaming agents; and (iv) from about 1 to about 5 wt % of one or more crosslinking agents; wherein the weight percentages are based on the total weight of the foamable composition; optionally, (v) a tackifier consisting of an aromatic hydrocarbon resin; and optionally, (vi) up to 20 wt % of one or more inorganic fillers.