Aqueous latex copolymer compositions

Details Aqueous latex copolymer compositions Aqueous latex copolymer compositions

C - Chemistry, Metallurgy

08

L

400/4221, 400/65

C08L 27/08 (2006.01) C08F 214/08 (2006.01) C09J 127/08 (2006.01)

Patent

CA 1270983

ABSTRACT AQUEOUS LATEX COPOLYMER COMPOSITIONS 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 plasticising comonomer like 2-ethylhexyl acrylate or n-butyl acrylate, and optionally a copolymerisable acid, and has Tg in the range -50 to < 0°C, and B comprises units of vinylidene chloride, an alkyl acrylate and/or methacrylate or certain other comonomers, and optionally a copolymerisable acid, and has a Tg in the range 0 to 80°C, and wherein copolymer A has a modal molecular weight Mp within the range 100,000 to 700,000.

496418

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