REMOVABLE PRESSURE-SENSITIVE ADHESIVE COMPOSITIONS COMPRISING ACRYLIC BASED EMULSION POLYMERS

摘要

REMOVABLE PRESSURE-SENSITIVE ADHESIVE COMPOSITIONS COMPRISING ACRYLIC BASED EMULSION POLYMERS of the Invention A removable pressure sensitive adhesive composition comprises an acrylic-based emulsion of polymer having a gel content of from about 70% to about 90%. The polymer comprises about 90 to 99.5 parts alkyl acrylate monomers, up to about 2 parts polar monomers and up to about one part of a multifunctional acrylate monomer. The polymer is synthesized in the presence of a combination of anionic and nonionic emulsifiers wherein the amount of anionic emulsifier exceeds the amount of nonionic emulsifier. The composition preferably comprises one or more adhesion stabilizers, preferably a plasticiser in an amount of up to about 3% by weight and a protective colloid in an amount of up to about 1% by weight.