Copolymer latex, method for preparing the same and use thereof

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...

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524562, 524841, 526227, 5263186, C08L 3306, C08F 428

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active

053691660

ABSTRACT:
A copolymer latex is provided which comprises 30 to 90% by weight of a conjugated diene monomer unit, 9 to 50% by weight of an ethylenically unsaturated nitrile monomer unit, 0.1 to 20% by weight of an ethylenically unsaturated acid monomer unit and 0 to 20% by weight of an other ethylenically unsaturated monomer unit copolymerizable therewith, having a polystyrene-converted weight average molecular weight of 50,000 to 500,000, and containing 45% or less of methyl ethyl ketone insoluble matter. The latex is presented by emulsion polymerization using a polymerization initiator containing a peroxide whose decomposition temperature giving a half-life period of 10 hours is 100.degree. C. or higher and a reducing agent. The latex is used advantageously for dip molding.

REFERENCES:
patent: 4102844 (1978-07-01), Schwinum et al.
Database WPI Section Ch, Week 0575 Derwent Publications Ltd., London, GB; Class A, AN 75-08380W & JP-A-49 113 891 (Japan Zeon Co) 30 Oct. 1974.
Chemical Abstracts, vol. 85, No. 16, 1976, Columbus, Ohio, abstract No. 109740x, Basov B. K. et al. -Synthesis . . . ` & `Prom-st. Stint. Kauch. (4), 12-14 `.
Chemical Abstracts, vol. 96, No. 26, 1982, Columbus, Ohio, abstract No. 219041e, Jarm V. et al. `Emulsion . . . ` & `Polymeri (Zagreb), 3(1), 291.varies.31`.

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