Production of Si.sub.2-x P.sub.x N.sub.2+x (NH).sub.1-x, where x=0.1 to
1.0
    45.
    发明授权
    Production of Si.sub.2-x P.sub.x N.sub.2+x (NH).sub.1-x, where x=0.1 to 1.0 失效
    Si2-xPxN2 + x(NH)1-x的制备,其中x = 0.1〜1.0

    公开(公告)号:US5296211A

    公开(公告)日:1994-03-22

    申请号:US1559

    申请日:1993-01-06

    摘要: The present invention relates to a process for the production of low-needle silicon nitride of high .alpha.-content, wherein an amorphous nitrogen-containing silane compound is mixed with a crystalline or amorphous compound comprising the elements silicon, phosphorus and nitrogen to form a mixture which is heat-treated at temperatures above 1000.degree. C. to form the low-needle silicon nitride. The present invention also relates to the silicon-, nitrogen- and phosphorus-containing compound which is used as the starting material in the process for the production of the low-needle silicon nitride, and the process for the production of the silicon-, nitrogen- and phosphorus-containing compound.

    摘要翻译: 本发明涉及一种生产高(α)含量的低针状氮化硅的方法,其中无定形含氮硅烷化合物与包含元素硅,磷和氮的晶体或无定形化合物混合形成 在高于1000℃的温度下热处理的混合物以形成低针状氮化硅。 本发明还涉及在生产低针氮化硅的方法中用作起始材料的含硅,氮和磷的化合物,以及生产硅氮 - 和含磷化合物。

    Process for the preparation of a pigment suspension
    46.
    发明授权
    Process for the preparation of a pigment suspension 失效
    制备颜料悬浮液的方法

    公开(公告)号:US5290352A

    公开(公告)日:1994-03-01

    申请号:US969333

    申请日:1992-10-30

    摘要: Pigment suspensions of inorganic pigments are prepare compacting and grinding the unground pigments on a roller compactor, followed by processing of the compacted pigment in a wet grinding mill with addition of water. The process as described improves the particle size distribution of the pigment.

    摘要翻译: PCT No.PCT / EP91 / 00850 Sec。 371 1991年10月25日第 102(e)日期1991年10月25日PCT提交1991年5月6日PCT公布。 公开号WO91 / 17866 日期2001年11月28日。无机颜料的颜料悬浮液是在辊压机上进行压实和研磨未研磨的颜料,随后加入湿法研磨机中的压实颜料加工。 所述方法改善了颜料的粒度分布。

    Mixtures of thermoplastic polymers in powder form
    49.
    发明授权
    Mixtures of thermoplastic polymers in powder form 失效
    粉末形式的热塑性聚合物的混合物

    公开(公告)号:US5112910A

    公开(公告)日:1992-05-12

    申请号:US743678

    申请日:1991-08-12

    摘要: Process for the preparation of mixtures of thermoplastic polymers in powder form from aqueous emulsions ofa) particulate, partly crosslinked rubber-like copolymers of a C.sub.2 -C.sub.8 -alkyl acrylate and/or butadiene with (based on the copolymer) up to 40 wt. % acrylonitrile, styrene or C.sub.1 -C.sub.4 -alkyl methacrylate,b) a thermoplastic resin, and if appropriatec) a rubber-rich graft polymer of styrene, .alpha.-methylstyrene, acrylonitrile, methyl methacrylate and/or alkyl acrylate on a diene or alkyl acrylate rubber having a rubber content of 50 to 95 wt. %,wherein aqueous emulsions of a) and b) and if appropriate c) having polymer contents of 15 to 50 wt. % are mixed with a coagulate solution simultaneously, but in separate streams, continuously or semi-continuously at 20.degree. to 100.degree. C., the polymers a) and b) and if appropriate c) being coagulated, the streams are combined and the polymer mixture is then separated off.

    摘要翻译: 制备粉末形式的热塑性聚合物的混合物的方法,该方法由以下混合物的水性乳液制备:a)丙烯酸C 2 -C 8烷基酯和/或丁二烯与(基于共聚物)的至少40重量%的颗粒部分交联的橡胶状共聚物。 丙烯腈,苯乙烯或甲基丙烯酸C 1 -C 4烷基酯,b)热塑性树脂,如果合适,c)在二烯或烷基上的苯乙烯,α-甲基苯乙烯,丙烯腈,甲基丙烯酸甲酯和/或丙烯酸烷基酯的富含橡胶的接枝聚合物 丙烯酸酯橡胶,其橡胶含量为50〜95重量% %,其中a)和b)和如果合适的水性乳液c)具有15至50重量%的聚合物含量。 %与凝固溶液同时混合,但在单独的流中,在20℃至100℃连续或半连续,聚合物a)和b),如果合适,c)凝结,将流合并,聚合物 混合物然后分离出来。