Removable pressure-sensitive adhesive compositions...

Details Removable pressure-sensitive adhesive compositions... Removable pressure-sensitive adhesive compositions...

C - Chemistry, Metallurgy

09

J

117/29, 400/9055

C09J 133/08 (2006.01) C08F 220/12 (2006.01) C09J 7/02 (2006.01)

Patent

CA 1331902

-31- REMOVABLE PRESSURE-SENSITIVE ADHESIVE COMPOSITIONS COMPRISING ACRYLIC BASED EMULSION POLYMERS Abstract 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.

586726

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