C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/2036, 400/64
C08F 279/04 (2006.01)
Patent
CA 1221786
- 1 - SPECIFICATION Title of the Invention CONTINUOUS PROCESS FOR PRODUCING RUBBER MODIFIED HIGH-IMPACT RESINS Abstract of the Disclosure In a continuous bulk or solution polymerization process for producing rubber modified high-impact resins which comprises continuously feeding a raw material solution comprising a mixture of an aromatic vinyl monomer and a vinyl cyanide monomer and a rubber component dissolved in the mixture, together with a radical polymer- ization initiator, to a first reactor, polymerizing the raw material solution under high-shear agitation to a conversion required to transform the rubber component phase into dispersed particles, withdrawing the reaction mixture continuously from the first reactor at a rate corresponding to the feed rate of the raw material solu- tion, and feeding the reaction mixture to a second or more reactors for further polymerization, rubber modified high-impact resins exhibiting excellent chemical resistance, thermal resistance and righdity and having a good surface gloss can be produced by properly determining the weight ratio of the aromatic vinyl monomer to the vinyl cyanide monomer present in the raw material solution, the content - 2 - of the rubber component in the raw material solution, the content of the solvent in the raw material solution, the property of the rubber component, the property of the radical polymerization initiator and the amount of initiator used, as well as the conversion of the monomers at the first reactor.
440358
Arahari Kouichi
Ichikawa Kouzo
Ito Norifumi
Maeda Tetsuo
Matsubara Tetsuyuki
Mitsui Chemicals Inc.
Sim & Mcburney
Toyo Engineering Corporation
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