Patent ID: 6201066
Filing Date: 2001-03-13
Classification: C08L,C09J,Y10T

Abstract:
An adhesive resin composition for extrusion lamination to a substrate having a functional group capable of reacting with an epoxy group consisting essentially of:(A) at least one polyolefin having a melt flow rate of 0.1 to 30 g/10 min and selected from the group consisting of (a) ethylene homopolymers, (b) propylene polymers, and (c) a mixture thereof, and(B) an epoxy compound capable of grafting to the polyolefin (A) and the substrate during the extrusion lamination and having at least two epoxy groups in the molecule and having a number average molecular weight of 3000 or less, the ratio of the weight of component (B) to the total weight of the components (A) and (B) being 0.01 to 0.9%, wherein said epoxy compound is:(i) phthalate diglycidyl ester,(ii) isophthalate diglycidyl ester,(iii) terephthalate diglycidyl ester,(iv) adipate diglycidyl ester,(v) trimethylolpropane polyglycidyl ether,(vi) polyglycerol polyglycidyl ether,(vii) pentaerythritol polyglycidyl ether,(viii) butanediol diglycidyl ether,(ix) epoxidized plant oil,(x) epoxidized animal oils,(xi) epoxidized liquid rubber,(xii) epoxidized silicone resin,(xiii) hydrogenated bisphenol A diglycidyl ether,(xiv) phenolnovolak polyglycidyl ether,(xv) 4,4'-diglycidyloxy-3,3',5,5'-tetramethylbiphenyl,(xvi) bis(4-glycidylaminophenyl)methane or(xvii) triglycidyl isocyanurate,and, optionally, (C) one or more additives selected from the group consisting of a plasticizer, a lubricant, a stabilizer, an antiblocking agent, an antistatic agent, a dye, a pigment other than a dye and a filler other than a pigments,wherein the composition is extrusion laminated by the oxidation of the polyolefin, the grafting of the epoxy compound with the polyolefin, and the reaction of the unreacted epoxy groups of the grafted epoxy compound with the functional groups of the substrate.