PROCESS FOR PREPARING THE POLYMER FOR COATING

    公开(公告)号:KR810001985B1

    公开(公告)日:1981-12-08

    申请号:KR770000283

    申请日:1977-02-10

    Inventor: TALSMA H GIFFEN W

    Abstract: Nitryl polymer for coating metal is prepd. by graft copolymg. acrylonitrile(I) and Me acrylate(II) or styrene with latexes of nitrile rubber of SBR, resp. Thus, a 31.1% solid rubber latex was prepd. by polymn. of 40 parts I with 60 parts 1,3-butadiene in water in the presence of AIBN tert- dodecyl mercaptan and emulsifier, and 31.9 parts of the rubber latex was polymd. with 75 parts I and 25 parts II in water in the presence of K2S2O8, in emulsifier, n-dodecyl mercaptan, and EDTA to give 33% solids copolymer latex.

    METHOD FOR IMPROVING COLOR AND IMPACT STRENGTH OF NITRILE POLYMERS

    公开(公告)号:KR820002027B1

    公开(公告)日:1982-10-25

    申请号:KR790001899

    申请日:1979-06-11

    Abstract: The color and impact strength of nitrile polymers, prepared by polymn. of an olefinically unsatd. nitrile with a monovinyl monomer in the presence of a rubber, were improved by heating the polymer to a plastic state in the absence of O and in presence of an inert gas. Thus, an acrylonitrile-rubber-vinyl compd. latex, coagulated and formed into strands was pelletized by screw extrusion in the presence of CO2. The product had Izod impact strength 2.57kg/cm2, yellowness index 28.

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