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156 条记录 (耗时 0.027 秒)

    Process for the preparation of thermoplastic moulding compositions
    96.
    发明授权
    Process for the preparation of thermoplastic moulding compositions 失效
    制备热塑性模塑组合物的方法

    公开(公告)号：US4885337A

    公开(公告)日：1989-12-05

    申请号：US69967

    申请日：1987-07-06

    申请人： Herbert Eichenauer ,  Alfred Pischtschan ,  Karl-Heinz Ott

    发明人： Herbert Eichenauer ,  Alfred Pischtschan ,  Karl-Heinz Ott

    IPC分类号： C08F279/04 ,  C08F2/22 ,  C08F279/00 ,  C08F279/02 ,  C08L25/12 ,  C08L51/00 ,  C08L51/04 ,  C08L55/00 ,  C08L55/02

    CPC分类号： C08L25/12 ,  C08F279/02 ,  C08L51/04

    摘要： Process for the preparation of a thermoplastic moulding composition of 10 to 65% by weight of at least one graft polymer which is obtainable by emulsion polymerization of styrene and acrylonitrile in a weight ratio of 90:10 to 50:50, it being possible for all or some of the styrene to be replaced by .alpha.-methylstyrene or methyl methacrylate, in the presence of at least one rubber base, and the weight ratio of monomers employed to rubber polymer employed being 20:80 to 70:30, and 90 to 35% by weight of a copolymer of styrene and acrylonitrile in a weight ratio of 90:10 to 50:50, it being possible for all or some of the styrene to be replaced by .alpha.-methylstyrene or methyl methacrylate, wherein, to prepare the graft polymer, the grafting monomers and 0.05 to 1.00 part by weight (per 100 parts by weight of grafting monomer) of a mercaptan are added stepwise to the latex of the rubber base over a period of time, the part amount of the monomer added in each time interval .DELTA.t.sub.n+1 being 0.30 to 0.95 times the amount of monomer added in the preceding time interval .DELTA.t.sub.n at least in the first half of the period of time, and the total period of time comprising n time intervals where n=3 to 30, and each time interval .DELTA.t being 5 to 100 minutes long.

    摘要翻译： 用于制备10至65重量％的至少一种接枝聚合物的热塑性模塑组合物的方法，所述接枝聚合物可以通过苯乙烯和丙烯腈的重量比为90:10至50:50的乳液聚合而获得，所有这些都可能 或由至少一个橡胶基团存在下由α-甲基苯乙烯或甲基丙烯酸甲酯代替的一些苯乙烯，并且所用单体与橡胶聚合物的重量比为20:80至70:30和90至35 重量比为90:10至50:50的苯乙烯和丙烯腈的共聚物的重量比，可以用α-甲基苯乙烯或甲基丙烯酸甲酯代替全部或一些苯乙烯，其中制备接枝物 聚合物，接枝单体和0.05至1.00重量份（每100重量份接枝单体）硫醇在一段时间内逐步添加到橡胶基料的胶乳上，每次加入单体的部分量 时间间隔DELTA tn + 1 bei ng至少在上述时间段的前半部分中，在上述时间间隔DELTA tn中添加的单体量的0.30〜0.95倍，n = 3〜30的n个时间间隔的总时间，以及每个时间间隔 长达5到100分钟。

    Sulphur-containing graft products
    97.
    发明授权
    Sulphur-containing graft products 失效
    含硫移植产品

    公开(公告)号：US4772668A

    公开(公告)日：1988-09-20

    申请号：US827390

    申请日：1986-02-10

    申请人： Herbert Eichenauer ,  Alfred Pischtschan ,  Karl-Heinz Ott

    发明人： Herbert Eichenauer ,  Alfred Pischtschan ,  Karl-Heinz Ott

    IPC分类号： C08L51/00 ,  C08F2/38 ,  C08F279/00 ,  C08F279/02 ,  C08F291/02 ,  C08L7/00 ,  C08L21/00 ,  C08L33/00 ,  C08L33/02 ,  C08L51/02 ,  C08L51/04 ,  C08L55/00 ,  C08L55/02

    CPC分类号： C08F279/02 ,  C08F291/02

    摘要： Sulphur-containing elastic-thermoplastic graft products of styrene, .alpha.-methyl styrene, p-methyl styrene, vinyl toluene, acrylonitrile or methyl methacrylate or mixtures thereof on a particle-like rubber with an average particle diameter (d.sub.50) of from 0.05 to 20.0 .mu.m and a glass temperature .ltoreq.10.degree. C. with a total rubber content of from 1 to 80% by weight, whereby the graft products have a sulphur content of from 1.15 to 3.95% by weight and the thermoplast proportion of the polymerized monomers on the particle-like rubber has a limiting viscosity of from 2 to 15 ml/g (measured in dimethyl formamide at 25.degree. C.) and in which at least 90% by weight of the incorporated sulphur is present as a constituent of terminal C1-18-thioalkyl groups.

    摘要翻译： 苯乙烯，α-甲基苯乙烯，对甲基苯乙烯，乙烯基甲苯，丙烯腈或甲基丙烯酸甲酯或其混合物在平均粒径（d50）为0.05至20.0的颗粒状橡胶上的含硫弹性 - 热塑性接枝产物 微米，玻璃温度为10℃，总橡胶含量为1〜80重量％，由此接枝产物的硫含量为1.15〜3.95重量％，聚合物的热塑性比例 颗粒状橡胶上的单体的特性粘度为2至15ml / g（在25℃的二甲基甲酰胺中测量），并且其中至少90重量％的引入的硫作为末端的成分存在 C 1-18 - 硫烷基。