Flame-retardant and self-extinguishing molding compositions
    1.
    发明授权
    Flame-retardant and self-extinguishing molding compositions 失效
    阻燃和自熄型成型组合物

    公开(公告)号:US3923728A

    公开(公告)日:1975-12-02

    申请号:US40017773

    申请日:1973-09-24

    Applicant: BASF AG

    Inventor: SEYDL WOLFGANG

    CPC classification number: C08K3/34 C08K5/02 Y10S260/24 C08L67/02

    Abstract: Molding compositions based on polybutylene terephthalate which are flame-retardant and self-extinguishing are obtained by incorporating a mixture of 5 to 30% by weight of a Diels-Alder adduct of hexachlorocyclopentadiene, 1 to 15% by weight of a metal compound having a synergistic action therewith and 1 to 10% by weight of a natural silicate into the polycondensate, the percentages by weight being relative to the amount of polyester used.

    Abstract translation: 通过掺入5〜30重量%的六氯环戊二烯的Diels-Alder加合物,1〜15重量%的具有协同作用的金属化合物的混合物,得到阻燃自熄的基于聚对苯二甲酸丁二醇酯的成型组合物 作用和1〜10重量%的天然硅酸盐进入缩聚物,重量百分比相对于所用的聚酯的量。

    MANUFACTURE OF POLYAMIDE FILM-FORMING MATERIALS

    公开(公告)号:CA1050688A

    公开(公告)日:1979-03-13

    申请号:CA237602

    申请日:1975-10-10

    Applicant: BASF AG

    Abstract: Process for the continuous manufacture of polymeric starting materials for high-grade transparent thin sheeting, wherein (a) {-caprolactam is continuously agitated in a first reaction zone under polyamide-forming conditions at temperatures of from 240.degree. to 290.degree.C until at least 20% and preferably at least 35% of the {-caprolactam has reacted,(b) magnesium silicate having a particle size of less than 30 .mu.m is then added to the melt to give magnesium silicate concentrations in the reaction mixture of from 0.0005 to 0.5% and preferably from 0.0001 to 0.01%, and (c) the melt is then polymerized in further stages to completion until the relative viscosity is from 2.4 to 3.3 and preferably from 2.5 to 2.8.

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