MODIFIED CARBOXYLATED POLYOLEFINS AND THEIR USE AS ADHESION PROMOTERS

摘要

The present invention provides solvent and water based primer compositions comprising carboxylated polyolefins that have been modified with one or more polyfunctional alcohols. The carboxylated polyolefins are obtained by the reaction of polyolefins with unsatured carboxylic esters, unsatured carboxylic acids, unsatured carboxylic anhydrides, acrylic monomers, or mixtures thereof. The carboxylated polyolefins are then furhter modified by reaction with one or more polyfunctional alcohols. These polyfunctional alcohol modified polyolefins may also contain pendant carboxyl groups, which have the propensity to form hydrophilic salts with amines, thereby rendering the polyfunctional alcohol modified polyolefins water-dispersible. These primer compositions are useful for significantly improving the adhesion of paints, adhesives, and inks to various plastic and metal substrates.