Patent ID: 8933188
Filing Date: 2015-01-13
Classification: B32B,C08G,C09J,Y10T

Abstract:
1. A low-misting two component adhesive for bonding layers of a flexible packaging laminate consisting of two co-reactive components, Component A and Component B, wherein Component A comprises an isocyanate-functionalized compound and optionally solvent, water, catalyst, curing agent, accelerator, plasticizer, stabilizer, antioxidant, light stabilizer, filler, dye, pigment, fragrance, preservative, or mixtures thereof, and Component B consists of about 15% by weight to about 75% by weight (based on the total weight of Component B) of at least one high functionality polyol containing at least four hydroxyl groups per molecule, said high functionality polyol being selected from the group consisting of: at least one lower functionality polymeric polyol compatible with the at least one high functionality polyol and selected from the group consisting of difunctional polymeric polyols; trifunctional polymeric polyols; difunctional polymeric polyols and at least one monomeric polyol having three hydroxyl groups per molecule; and trifunctional polymeric polyols and at least one monomeric polyol having three hydroxyl groups per molecule; and combinations thereof; said difunctional and trifunctional polymeric polyols being selected from at least one of: and optionally solvent, water, catalyst, curing agent, accelerator, plasticizer, stabilizer, antioxidant, light stabilizer, filler, dye, pigment, fragrance, preservative, or mixtures thereof; wherein the at least one high functionality polyol is obtained by reacting a difunctional polyol and a dicarboxylic acid to form a carboxylic acid-functionalized diester and reacting the carboxylic acid-functionalized diester with a trifunctional polyol.