C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/6418, 400/64
C08F 255/02 (2006.01) C08F 255/00 (2006.01)
Patent
CA 1109181
METHOD OF POLYMERIZING VINYL HALIDE WITH OLEFIN POLYMERS AND COPOLYMERS AND COMPOSITIONS THEREOF Abstract of the Disclosure An improved vinyl halide or vinyl halide copolymer containing up to 50 percent of a comonomer can be obtained by polymerizing in contact with an aliphatic hydrocarbon olefin homopolymer, copolymer or ter- polymer in a process of bulk polymerization comprising single stage or two-stage bulk polymerization wherein high speed agitation is used during the first stage and low speed agitation is used in the second stage. By polymerizing in the presence of the olefin polymer or co- polymer, reduced particle size, reduced lump formation, and lower melt viscosity and improved impact strength can be obtained in the resin product. Small amounts of the olefin polymer or copolymer are effective in providing particle size control, reducing lump formation and eliminating scale build-up. Larger amounts of olefin polymer increase impact strength, reduce melt viscosity and provide excellent mold release properties in the final product.
290991
Hooker Chemicals & Plastics Corp.
Sherman
LandOfFree
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