Emulsion pressure-sensitive adhesive polymers exhibiting excelle

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

1992-10-21

1994-01-11

Schofer, Joseph L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524240, 524833, 522153, 526 87, 52631843, 526325, 526931, C08L 4100

Patent

active

052782271

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 of a dicarboxylic acid, and up to about 5 percent by weight of an unsaturated carboxylic acid. There is preferably included in the monomers a reactive surfactant and a chelating monomer, with or without a chain transfer agent. The preferred polymers have a glass transition temperature less than about -30.degree. C. and a gel content of about 50 to 70 percent by weight.

REFERENCES:
patent: 4212785 (1980-07-01), Turck
patent: 4354008 (1982-10-01), Skoultchi
patent: 4564664 (1986-01-01), Chang et al.
patent: 4759983 (1988-07-01), Knutson et al.
patent: 4908403 (1990-03-01), Spada et al.

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