Blend of a carboxylated copolymer latex and of an acrylate copol

Stock material or miscellaneous articles – Composite – Of natural rubber

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156289, 427316, 4273741, 4273983, 4273935, 428495, 428519, 428520, 524521, 525218, B32B 2508, B32B 2512

Patent

active

043317383

ABSTRACT:
A composition of a blend of a carboxylated copolymer latex having a Tg of not less than about -30.degree. C. such as a copolymer of styrene, itaconic and methacrylic acids and butadiene-1,3 and an acrylate copolymer latex having a Tg of not less than about +30.degree. C. such as a copolymer of ethylacrylate, methyl methacrylate and acrylamide containing a minor amount by weight of a heat sensitizer sufficient to gel the composition and which also can contain fillers, wetting agents and stabilizers, and so forth can be used to provide a water resistant film on the surface of a hot rubber compound or composition which subsequently can be cooled rapidly with water and dried. The resulting latex coated rubber can then be stacked or assembled without sticking.

REFERENCES:
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patent: 3817899 (1974-06-01), Turck
patent: 4065423 (1977-12-01), Hen
patent: 4130691 (1978-12-01), Canard et al.
patent: 4193902 (1980-03-01), Mondt et al.
patent: 4217395 (1980-08-01), Kuan et al.
patent: 4233362 (1980-11-01), Novak et al.

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