Aqueous latex copolymer compositions

Details Aqueous latex copolymer compositions Aqueous latex copolymer compositions

1985-11-21

1988-11-08

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...

524522, 524523, 524527, 524560, C08L 2700

Patent

active

047834986

ABSTRACT:
Aqueous latex compositions for use as contact adhesives comprising a mixture of an amorphous copolymer A and an amorphous copolymer B and preferably a tackifying resin where A comprises units of vinylidene chloride, an internally plasticizing comonomer like 2-ethylhexyl acrylate or n-butyl acrylate, and optionally a copolymerizable acid, and has Tg in the range -50.degree. to <0.degree. C. and B comprises units of vinylidene chloride, an alkyl acrylate and/or methacrylate or certain other comonomers, and optionally a copolymerizable acid, and has a Tg in the range 0.degree. to 80.degree. C., and wherein copolymer A has a modal molecular weight Mp within the range 100,000 to 700,000.

REFERENCES:
patent: 3787232 (1974-01-01), Mikofalvy et al.
patent: 4341679 (1982-07-01), Burgess et al.
patent: 4543386 (1985-09-01), Padget et al.
patent: 4543387 (1985-09-01), Padget et al.
"Structure and Properties of Polymers" Boenig, 1973, pp. 256-260.

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