Patent ID: 9623631
Date: 2017-04-18
CPC Classifications: B32B,C09J,Y10T

Claim:
1. A radiation-curable adhesive for laminating films together to form a flexible packaging laminate, wherein the adhesive is free of water and tackifier and is prepared from a) about 5% to about 70% by weight of adhesive of: a1) at least one aliphatic urethane acrylate oligomer and a2) a polyester-urethane acrylate oligomer different from the a1) at least one aliphatic urethane acrylate oligomer; b) about 50% to about 70% by weight of adhesive of at least one carboxylic acid-functionalized ester-containing (meth)acrylate monomer; and c) about 1% to about 25% by weight of adhesive of at least one (meth)acrylic polyol (meth)acrylate that is the reaction product of a (meth)acrylate monomer, an allylic alcohol, optionally an alkoxylated allylic alcohol and optionally an ethylenic monomer, the (meth)acrylic polyol (meth)acrylate having a Mw greater than 4000 and an average functionality of about 2 to about 8 hydroxy groups per molecule.