Emulsion pressure-sensitive adhesive polymers exhibiting excelle

Details Emulsion pressure-sensitive adhesive polymers exhibiting excelle Emulsion pressure-sensitive adhesive polymers exhibiting excelle

1992-03-09

1993-02-23

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 87, 526278, 52631843, 526325, 526931, C08F 2602, C08F12004, C08F22210, C08L 3300

Patent

active

051891263

ABSTRACT:
There is provided inherently tacky, emulsion pressure-sensitive adhesive polymers comprising about 35 to about 65 percent by weight alkyl acrylates, about 15 to about 35 percent vinyl esters, about 20 to about 35 percent by weight diesters di-carboxylic acid, about 0.1 to 1 percent by weight of a reactive multifunctional monomer and up to about 10 percent by weight of an unsaturated carboxylic acids. The polymers are formed in the presence of a reactive surfactant, with or without a chain transfer agent. The preferred polymers have a glass transition temperature less than about -20.degree. C. and a gel content of at least 60 percent by weight.

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