crosslinkable materials for laminated safety

摘要

A security laminate comprising at least one sheet of interlayer is laminated to one or more rigid sheets, one or more other polymer sheets of intermediate layer, or one or more film layers; wherein the at least one interlayer sheet comprising a composition of ethylene; wherein the ethylene copolymer composition comprises a mixture of ethylene and 1 Ethylene 2; and wherein said Ethylene 1 consisting essentially of copolymerized units of ethylene, optionally from 5% to 40% by weight of copolymerized units of a first olefin having a formula of CH2 = C (R1) CO2R2, and 2% to 30% by weight of copolymerized units of a second olefin having a formula of CH2 = C (R3) COOH, wherein the weight percentages of copolymerized units of the first olefin and the second olefin are based on the total weight of said Ethylene Copolymer 1; wherein at least a portion of the carboxylic acid groups of the second olefin are neutralized to form carboxylate salts; wherein R1 represents hydrogen or an alkyl group, R2 represents an alkyl group, and R3 represents hydrogen or an alkyl group; and wherein said ethylene copolymer 2 consists essentially of copolymerized units of ethylene, optionally up to 40% by weight of copolymerized the first olefin units, and 3% to 15% by weight of copolymerized units of a third olefin having a formula of CH2 CH2 = C (R4) -D, wherein the weight percentages of copolymerized units of the first olefin and the third olefin based on the total weight of said Ethylene Copolymer 2; wherein R4 represents hydrogen or an alkyl group; wherein D represents a moiety selected from the group consisting of -CO2R5, -CO2R6-R5, -R6-R 5, -OR 5; wherein R5 represents a moiety containing an epoxy group and R6 represents an alkylene group; with the proviso that in the mixture of the ethylene 1 and Ethylene Copolymer 2, any of said first, second or third olefin is a dicarboxylic acid or a diester, monoester or an anhydride of the dicarboxylic acid.