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    METHOD FOR PRODUCING IMPACT RESISTANT THERMOPLASTIC RESIN BY CONTINUOUS BULK POLYMERIZATION
    2.
    发明专利
    METHOD FOR PRODUCING IMPACT RESISTANT THERMOPLASTIC RESIN BY CONTINUOUS BULK POLYMERIZATION 未知

    公开(公告)号：CA979569A

    公开(公告)日：1975-12-09

    申请号：CA129665

    申请日：1971-12-08

    Applicant: TORAY INDUSTRIES

    Inventor： OKAMOTO TAKEHIKO ,  KISHIMOTO AKIHIKO ,  NAGAI IKUO ,  SATO HIROSHI ,  INOUE MASAKAZU ,  OKASAKA HOTSUMA

    IPC: C08F2/02 ,  C08F279/02 ,  C08F285/00

    Abstract: A method is provided for continuously manufacturing high impact strength thermoplastic resins comprised of the sequential steps of (a) bulk-polymerizing a monomer solution, which contains a diene type rubber polymer or a graft polymer obtained by extracting the rubber polymer particle or vinyl monomer grafted polymer particle in latex with vinyl monomers which contain 5-20 percent by weight of water at a temperature of 85 DEG -135 DEG C, while continuously stirring the solution, vaporizing the volatile components, condensing the volatile component and recycling them back to reaction mixture, until the solid content in the reaction mixture reaches 40-75 percent by weight, and thereafter (b) bulk polymerizing the resulting prepolymer solution under the condition that plug-flowing can be attained with a temperature gradient 100 DEG -170 DEG C at the top of the reaction vessel and 170 DEG -270 DEG C at the bottom thereof, while the volatile component of the mixture are evaporated off, condensed and recycled to the reaction mixture, until the solid content is at least 90 percent by weight.

    IMPACT RESISTANT THERMOPLASTIC RESINS
    6.
    发明专利
    IMPACT RESISTANT THERMOPLASTIC RESINS 未知

    公开(公告)号：GB1299268A

    公开(公告)日：1972-12-13

    申请号：GB4668070

    申请日：1970-10-01

    Applicant: TORAY INDUSTRIES

    Inventor： OKAMOTO TAKEHIKO ,  KISHIMOTO AKIHIKO ,  INOUE MASAKAZU ,  NAGAI IKUO ,  OKTANI MITSUNOBU

    IPC: C08F279/02 ,  C08F285/00

    Abstract: 1299268 Graft polymerization process TORAY INDUSTRIES Inc 1 Oct 1970 46680/70 Heading C3G An impact resistant resin is produced by emulsion graft polymerizing from 1 to 85% by weight of an ethylenically unsaturated monomer on to 99 to 15% of diene rubber particles in a latch, separating the grafted particles from the aqueous phase of the latex and bulk or suspension polymerizing a monomer phase consisting of at least one ethylenically unsaturated monomer with the grafted particles dispersed therein to give a resin containing 1 to 35% by weight of diene rubber particles. The grafted particles may be separated from the aqueous phase of the latex by (a) mixing the grafted particle latex with the monomer phase used for the bulk or suspension polymerization, extracting the grafted particles into said monomer phase and removing the aqueous phase. Alternatively, the grafted particle latex is coagulated, the aqueous phase is removed and the grafted particles are dried to a water content of at least 20% by weight. The bulk polymerization may be initiated in said monomer phase before the grafted particles are dispersed therein. In the examples, the grafted particles (i) and monomer phase (ii) are as follows: (a) (i) polybutadiene grafted with styrene, acrylonitrile and, optionally, methyl methacrylate, and (ii) the said monomers; (b) (i) butadiene-styrene copolymer grafted with styrene and acrylonitrile and (ii) the said monomers; (c) (i) polybutadiene grafted with methyl methacrylate and styrene and (ii) the said monomers; (d) (i) butadienestyrene copolymer grafted with styrene and (ii) the said monomer; (e) (i) butadiene-styrene copolymer grafted with styrene and acrylonitrile and (ii) methyl methacrylate and (f) (i) butadiene-acrylonitrile copolymer or polyisoprene grafted with styrene and acrylonitrile and (ii) styrene and acrylonitrile.

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