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    IMPACT RESISTANT THERMOPLASTIC RESINS
    1.
    发明专利
    IMPACT RESISTANT THERMOPLASTIC RESINS 未知

    公开(公告)号：GB1301166A

    公开(公告)日：1972-12-29

    申请号：GB4781170

    申请日：1970-10-08

    Applicant: TORAY INDUSTRIES

    Inventor： OKSAKA HOTUMA ,  OKAMOTO TAKEHIKO ,  HIRAI TOSHIMASA ,  INOUE MASAKASU ,  ASADA AKIRA

    IPC: C08F279/02

    Abstract: 1301166 Graft polymerization process TORAY INDUSTRIES Inc 8 Oct 1970 47811/70 Heading C3G An impact resistant resin is produced by mixing 100 parts by weight of diene rubber particles having a gel content of at least 50% in a latex with more than 10 parts by weight of a monomer composition comprising more than 20% by weight of an aromatic monomer, extracting the diene rubber particles and monomer composition and removing the aqueous phase and bulk polymerizing the extract. The aromatic monomer, e.g. styrene or a substituted styrene may be copolymerized with (meth)- acrylonitrile or an alkyl (meth)acrylate. A grafted rubber latex may be used together with the diene rubber latex. In the examples, (1) polybutadiene is grafted with (a) styrene and acrylonitrile (b) styrene (c) alpha-methyl styrene and acrylonitrile or (d) styrene, acrylonitrile and methyl methacrylate; (2) a mixture of butadiene-acrylonitrile rubber and polybutadiene grafted with styrene and acrylonitrile is grafted with styrene and acrylonitrile and (3) butadiene-styrene rubber is grafted with styrene.

    THERMOPLASTIC RESIN COMPOSITION
    3.
    发明专利
    THERMOPLASTIC RESIN COMPOSITION 失效

    公开(公告)号：JPS5845245A

    公开(公告)日：1983-03-16

    申请号：JP14402181

    申请日：1981-09-14

    Applicant: TORAY INDUSTRIES

    Inventor： FUKUMOTO TADAO ,  KISHIMOTO AKIHIKO ,  HIRAI TOSHIMASA

    IPC: C08L23/00 ,  C08L23/08 ,  C08L25/00 ,  C08L25/02 ,  C08L33/00 ,  C08L33/02 ,  C08L33/04 ,  C08L33/06 ,  C08L33/18 ,  C08L101/00

    Abstract: PURPOSE:The titled resin composition capable of providing a molded article having good appearance, having improved balanced mechanical properties and weather resistance, obtained by blending a modified vinyl polymer with an ethylene-unsaturated carboxylic acid glycidyl ester copolymer. CONSTITUTION:(A) A modified vinyl polymer obtained by copolymerizing a vinyl monomer selected from an aromatic vinyl monomer, vinyl cyanide monomer, and (meth)acrylic acid ester monomer with 0.01-5wt% alpha,beta-unsaturated carboxylic acid is blended with (B) an ethylene copolymer obtained by copolymerizing ethylene with 0.5-30wt% alpha,beta-unsaturated carboxylic acid glycidyl ester in such a way that 55-99pts.wt. component A is blended with 1-50pts.wt. component B based on 100pts.wt. total amount of the composition. The blending of 5- 90pts.wt. of a modified vinyl polymer like the component A, having 0.1-10wt% copolymerized amount of the unsaturated carboxylic acid, 1-50pts.wt. of the component B and 5-90pts.wt. vinyl polymer from the vinyl monomer of the component A provides also the similar composition.

    MOLDABLE RESIN COMPOSITION
    4.
    发明专利
    MOLDABLE RESIN COMPOSITION 失效

    公开(公告)号：JPS5636539A

    公开(公告)日：1981-04-09

    申请号：JP11171079

    申请日：1979-09-03

    Applicant: TORAY INDUSTRIES

    Inventor： SATOU HIROSHI ,  GOTOU YOSHIAKI ,  HIRAI TOSHIMASA

    IPC: C08F279/00 ,  C08F279/02 ,  C08J3/12 ,  C08J3/16 ,  C08L7/00 ,  C08L21/00 ,  C08L25/00 ,  C08L33/00 ,  C08L33/02 ,  C08L33/04 ,  C08L51/00 ,  C08L51/02 ,  C08L51/04 ,  C08L55/00

    Abstract: PURPOSE:Titled composition, directly moldable without necessity of kneading, which is prepared by mixing a hard resin pellet with an ABS resin pellet, containing a specified or less amount of a rebber, obtained by drying an ABS resin latex by means of a screw-type dehydrating dryer. CONSTITUTION:ABS latex 1, obtained by the graft polymerization of (i) 30- 90pts.wt. of a diene rubber latex and (ii) 10-70pts.wt. of an aromatic vinyl, vinyl cyanide or (meth)acrylate, and a coagulant 2, are agitated and coagulated in coagulating vessel 3. The resulting mixture is filtered by filter 4. After rubber content is reduced to 55wt% or lower, by being mixed with pellet polymer 5, obtained by the polymerization of at least two kinds of monomers (ii), the polymer cake is dried by means of screw-type dehydrating dryer 8, and pelletized into pellet (A) of particle size 1-10mm. by means of cutter 10. 5-95wt% of pellet (A) and 95-5wt% of hard resin pellet (B) of particle size 1-10mm., obtained by the polymerization of monomer (ii), are mixed and directly molded by means of an extruder, etc.

    CONTINUOUS RECOVERY OF POLYMER FROM POLYMER LATEX
    5.
    发明专利
    CONTINUOUS RECOVERY OF POLYMER FROM POLYMER LATEX 失效

    公开(公告)号：JPS5618604A

    公开(公告)日：1981-02-21

    申请号：JP9317479

    申请日：1979-07-24

    Applicant: TORAY INDUSTRIES

    Inventor： SATOU HIROSHI ,  ICHIKAWA YASUNORI ,  HIRAI TOSHIMASA

    IPC: C08F6/00 ,  C08F6/14

    Abstract: PURPOSE:To improve productivity, by coagulating a latex of a polymer plasticizable at 100-300 deg.C, dehydrating and drying the coagulated polymer by passing the polymer together with vinyl polymer pellets through a screw type squeezing dehydration dryer and continuously recovering the polymer in the molten state. CONSTITUTION:Into a coagulation tank 3 is introduced from a storage tank 1 a latex of a polymer which is hard at normal temperature and is plasticizable at 100- 300 deg.C, such as a vinyl polymer latex, a latex of a graft polymer prepared by grafting a vinyl monomer onto a rubbery polymer or a latex of these mixed polymers. A coagulant is introduced to the tank 3 from a storage tank 2. The coagulation is continuously fed to a filter 4. Then, the polymer cake is conveyed at a constant rate to a screw dehydrator 8. On the other hand, vinyl polymer pellets are fed from a hopper 5 through a metering feeder 6 to the dehydrator 8. The polymer dried in the dehydrator 8 is passed through a cooling bath 9 and cut and pelletized by a cutter 10. The volatile matters from the dehydrator 8 are sucked and exhausted via a vent receiving tank 11 by a vacuum pump 5.

    ENLARGEMENT OF PARTICLE OF SYNTHETIC RUBBER LATEX
    6.
    发明专利
    ENLARGEMENT OF PARTICLE OF SYNTHETIC RUBBER LATEX 失效

    公开(公告)号：JPS55120602A

    公开(公告)日：1980-09-17

    申请号：JP2676379

    申请日：1979-03-09

    Applicant: TORAY INDUSTRIES

    Inventor： WATANABE GIHEI ,  NAGAI IKUO ,  HIRAI TOSHIMASA

    IPC: C08C1/00 ,  C08C1/065

    Abstract: PURPOSE:To increase the average particle diameter of dispersed particles of synthetic rubber latex by subjecting the synthetic rubber latex to ultrasonic wave treatment. CONSTITUTION:Synthetic rubber latex is subjected to ultrasonic wave treatment to enlarge the diameter of dispersed particles of the latex. When ultrasonic wave is transmitted through the latex, ultrasonic energy causes a vibrating action and hence microscopically localized stirring effect is produced. The joining between particles takes place by shearing stress due to the above stirring effect. preferably, the ultrasonic wave treatment is carried out with a frequency of 20-80kHz, at a temp. of 10-80 deg.C for 1-5hr. When the latex is brought to quasiunstable state by a method such as the addition of a solvent, the addition of an electrolyte prior to the ultrasonic wave treatment, the effect obtained is further enhanced.

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