C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1811, 400/49
C08L 33/00 (2006.01) C08F 265/04 (2006.01) C08J 3/09 (2006.01)
Patent
CA 1156778
ABSTRACT OF THE DISCLOSURE A stable, flowable dispersion of rubber in the form of discrete particles having an average diameter of from 100 to 3,000 nm in organic liquids which comprises: A) as rubber, from 1 to 20 % by weight, based on the total weight of the dispersion, of a crosslinked homopolymer or copolymer of a C1-C10 alkylacrylate; B) from 0 to 20 % by weight, based on the total weight of the dispersion, of water in the form of a water-in-oil emulsion; and C) as continuous organic phase, from 99 to 60 % by weight, based on the total weight of the dispersion, of a) a C1-C10 alkylacrylate or alkylmethacrylate, or b) a mixture of from 85 to 50 % by weight of styrene or .alpha.-methylstyrene and from 15 to 50 % by weight of acrylonitrile, methacrylonitrile or a C1-C6 alkylacrylate or alkylmethacrylate, or c) a mixture of from 85 to 50 % by weight of a C1-C10 alkylacrylate or alkylmethacrylate and from 15 to 50 % by weight of acrylonitrile, methacrylonitrile and/or styrene, wherein a), b), and c) can optionally contain up to 60 % by weight of a liquid optionally halogenated hydrocarbon, and a process for its manufacture. The dispersions of the invention can be polymerised and cured, and may contain reinforcing fillers, pigments or other additives. They are suitable for the production of impact- resistant coatings, or of castings having enhanced resistance to ageing.
347590
Liebig Lothar
Lindner Christian
Ott Karl-Heinz
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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