Continuous preparation of nylon from aqueous salt solution in
precondensation zone having baffles
    11.
    发明授权
    Continuous preparation of nylon from aqueous salt solution in precondensation zone having baffles 失效
    从具有挡板的预缩合区域的盐水溶液中连续制备尼龙

    公开(公告)号:US4540772A

    公开(公告)日:1985-09-10

    申请号:US620837

    申请日:1984-06-15

    CPC分类号: C08G69/28

    摘要: Nylons are prepared by a continuous process in which, in a precondensation zone, an aqueous solution of a salt of a dicarboxylic acid of 6 to 18 carbon atoms and a diamine of 6 to 18 carbon atoms is heated to 250.degree.-300.degree. C. under superatmospheric pressure, with simultaneous vaporization of water and formation of a prepolymer, the prepolymer and the vapor are separated, and the former is fed into a polycondensation zone and condensed under superatmospheric pressure of from 1 to 10 bar and at from 250.degree. to 300.degree. C., wherein the aqueous salt solution is condensed under superatomspheric pressure of from 1 to 10 bar in the first third of the tubular precondensation zone provided with baffles, until the degree of conversion is not less than 93%, and the prepolymer and the vapor phase are brought into intimate contact with one another in the remaining two thirds of the precondensation zone.

    摘要翻译: 尼龙通过连续方法制备,其中在预缩合区中将6至18个碳原子的二羧酸盐和6至18个碳原子的二胺的水溶液加热至250-300℃。 在超大气压下,同时蒸发水和形成预聚物,将预聚物和蒸气分离,将前者加入缩聚区,并在1至10巴和250至300的超大气压下冷凝 ℃,其中盐水溶液在具有挡板的管状预缩合区的第一三分之一中在1至10巴的超大体压力下冷凝,直到转化率不低于93%,并且预聚物和 气相在预缩合区的剩余三分之二处彼此紧密接触。

    Flameproofed filled nylon molding materials
    12.
    发明授权
    Flameproofed filled nylon molding materials 失效
    防火填充尼龙成型材料

    公开(公告)号:US4314927A

    公开(公告)日:1982-02-09

    申请号:US153705

    申请日:1980-05-27

    CPC分类号: C08K3/02 C08K13/02

    摘要: A flameproofed thermoplastic molding material which possesses good long-term stability and contains 100 parts of a nylon, 10-100 parts of an inorganic filler, 1-12 parts of red phosphorus and 1-40 parts of melamine cyanurate.The molding materials may be used to produce moldings, especially for electrical articles.

    摘要翻译: 一种具有良好长期稳定性并含有100份尼龙,10-100份无机填料,1-12份红磷和1-40份氰尿酸三聚氰胺的防火热塑性成型材料。 成型材料可用于生产模制品,特别是用于电气制品。

    Blends of styrene-acrylonitrile polymer, styrene-methyl
methacrylate-maleic anhydride terpolymer and glass filler
    13.
    发明授权
    Blends of styrene-acrylonitrile polymer, styrene-methyl methacrylate-maleic anhydride terpolymer and glass filler 失效
    苯乙烯 - 丙烯腈聚合物,苯乙烯 - 甲基丙烯酸甲酯 - 马来酸酐三元共聚物和玻璃填料的共混物

    公开(公告)号:US5304591A

    公开(公告)日:1994-04-19

    申请号:US876166

    申请日:1992-04-30

    CPC分类号: C08K3/40 C08L25/12 C08L51/04

    摘要: A thermoplastic molding composition composed of, based on the total of A, B, C and D,40-95% by weight of a copolymer A of, based on A,90-95% by weight of styrene and/or its derivatives and 10-50% by weight of acrylonitrile, optionally up to 50% by weight of a graft copolymer B of 20-80% by weight of a monomer mixture of either styrene/acrylonitrile in the ration from 9:1 to 4:6 or styrene/acrylonitrile/methylacrylate in the ration from 19:1:1 to 8:6:6 onto 80-20% by weight of an elastomer based on butadiene or acrylic ester as grafting base, graft copolymerization being effected in either emulsion or solution, 1-50% by weight of a reinforcing glass fiber material C and 0.1-50% by weight of a terpolymer D of styrene, methyl methacrylate and maleic anhydride composed of 1-15% by weight each of styrene and maleic anhydride and a styrene/maleic anhydride ratio of from 5:1 to 1:5, and methyl methacrylate.

    摘要翻译: 基于A,B,C和D的总和,40-95重量%的基于A的共聚物A,基于90-95重量%的苯乙烯和/或其衍生物的热塑性模塑组合物和 10-50重量%的丙烯腈,任选最多50重量%的接枝共聚物B,其中20-80重量%的苯乙烯/丙烯腈在9:1至4:6的比例中的单体混合物或苯乙烯 /丙烯腈/甲基丙烯酸酯的比例为19:1:1至8:6:6的80-20重量%的基于丁二烯或丙烯酸酯作为接枝基的弹性体,接枝共聚在乳液或溶液中进行,1 -50重量%的增强玻璃纤维材料C和0.1-50重量%的苯乙烯,甲基丙烯酸甲酯和马来酸酐的三元共聚物D,其组成为苯乙烯和马来酸酐的1-15重量%,苯乙烯/马来酸酐 酸酐比为5:1至1:5,和甲基丙烯酸甲酯。

    Manufacture of electrically conductive polyolefin moldings, and their use
    15.
    发明授权
    Manufacture of electrically conductive polyolefin moldings, and their use 失效
    制造导电聚烯烃模制品及其用途

    公开(公告)号:US4350652A

    公开(公告)日:1982-09-21

    申请号:US254937

    申请日:1981-04-16

    摘要: A process for the preparation of finely divided polyolefin molding materials from 100 parts by weight of a polyolefin and from 0.01 to 30 parts by weight of an electrically conductive additive, with or without other additives, wherein the mixture of the finely divided polyolefin particles and the electrically conductive additives is brought to the crystallite melting point of the polyolefin by the heating effect of the mixing action, and is then brought to a temperature which is from 3.degree. to 40.degree. C. above the said crystallite melting point while being subjected to a defined mixing intensity, after which the mixture is either cooled within 120 seconds or is directly compression-molded.

    摘要翻译: 一种由100重量份的聚烯烃和0.01至30重量份的具有或不含其它添加剂的导电添加剂制备细分散的聚烯烃模塑材料的方法,其中细分散的聚烯烃颗粒和 导电性添加剂通过混合作用的加热效果达到聚烯烃的微晶熔点,然后在高于所述微晶熔点的温度下升温至3〜40℃,同时进行 混合物在120秒内冷却或直接压缩成型。