C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/2024, 400/30
C08F 291/00 (2006.01) C08L 51/00 (2006.01)
Patent
CA 1252930
GRAFT POLYMERS OF POLYMERIZABLE MONOMERS AND OLEFIN POLYMERS ABSTRACT OF THE DISCLOSURE Graft polymers are prepared by reacting an ethylenically unsaturated polymerizable monomer with a polymer of an olefin of 2 to about 8 carbon atoms in a process wherein the olefin polymer is substantially insoluble in the monomer but is cap- able of absorbing the monomer. In a preferred aspect, a vinyl halide polyolefin graft polymer is produced by reacting a solid polyolefin particle with a vinyl halide monomer in which the polyolefin is substantially insoluble, but is capable of absorbing the monomer. The solid particles can be contacted with the monomer in one step or in stages. When the stage-wise reaction is continued until the proportion of polyolefin in the polymer product is about 2 to about 20 weight percent, the resulting product can be formed to a transparent or translucent article. When a small proportion of solid polyolefin is em- ployed in the polymerization process, both a graft polymer and a polymer of the unsaturated monomer are simultaneously pro- duced in the same reactor and can be readily mechanically separated into the individual products.
465179
Eastman David W.
Olener Joel L.
Walker Leigh E.
Occidental Chemical Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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