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50 条记录 (耗时 0.019 秒)

    Continuous preparation of silica sols which contain large particles
    31.
    发明授权
    Continuous preparation of silica sols which contain large particles 失效
    连续制备含有大颗粒的硅溶胶

    公开(公告)号：US5964693A

    公开(公告)日：1999-10-12

    申请号：US67308

    申请日：1993-05-26

    申请人： Uwe Brekau ,  Hans-Dieter Block ,  Hans-Heinrich Moretto ,  Peter Schmidt ,  Peter Schober ,  Werner Ludovici

    发明人： Uwe Brekau ,  Hans-Dieter Block ,  Hans-Heinrich Moretto ,  Peter Schmidt ,  Peter Schober ,  Werner Ludovici

    IPC分类号： C01B33/141 ,  C01B33/143 ,  C01B33/14

    CPC分类号： C01B33/1435

    摘要： A process is provided for the preparation of aqueous silica sols having a particle size of 27 to 72 nm. by adding fresh acidic silica sol into the reactors of a multi stage cascade reactor wherein the reactors contain aqueous solution of colloidal silica sol of a pH of 8 or above. Each successive stage of the cascade reactor is supplied with overflow from the preceding stage. Alkaline compounds, such as alkaline sodium silicate solution, alkaline potassium silicate solution, sodium hydroxide solution or potassium hydroxide solution, are introduced into the first reactor or first reactors so that a pH value in the range of 8 to 12.5 is established in the reactors.

    摘要翻译： 提供了一种制备粒径为27至72nm的含水硅溶胶的方法。 通过将新鲜酸性二氧化硅溶胶加入到多级级联反应器的反应器中，其中反应器含有pH为8或更高的胶态二氧化硅溶胶的水溶液。 级联反应器的每个连续级从前级供给溢流。 将碱性化合物，例如碱性硅酸钠溶液，碱性硅酸钾溶液，氢氧化钠溶液或氢氧化钾溶液引入到第一反应器或第一反应器中，使得在反应器中建立8至12.5范围内的pH值。

    Stable, organic multi-component dispersions
    37.
    发明授权
    Stable, organic multi-component dispersions 失效
    稳定的有机多组分分散体

    公开(公告)号：US4444946A

    公开(公告)日：1984-04-24

    申请号：US344083

    申请日：1982-01-29

    申请人： Heinrich Alberts ,  Hans Friemann ,  Hans-Heinrich Moretto ,  Hans Sattlegger

    发明人： Heinrich Alberts ,  Hans Friemann ,  Hans-Heinrich Moretto ,  Hans Sattlegger

    IPC分类号： C08F283/00 ,  C08F283/12 ,  C08F291/00 ,  C08G18/40 ,  C08G18/61 ,  C08G18/63 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L51/00 ,  C08L51/02 ,  C08L51/08 ,  C08L67/00 ,  C08L77/00 ,  C08L83/00 ,  C08L83/04 ,  C08L83/10 ,  C08L101/00 ,  C08L83/06

    CPC分类号： C08L51/085 ,  C08G18/4072 ,  C08G18/61 ,  C08G18/63 ,  C08L83/04 ,  C08L83/10 ,  C08G77/16 ,  C08G77/20

    摘要： The invention relates to special stable dispersions which crosslink at room temperature upon exposure to moisture in the atmosphere. The dispersions comprise polysiloxanes, vinyl-grafted polysiloxanes and condensation products, e.g. by weight approximately comprisingI. 20-90% of at least one diorganopolysiloxane optionally terminated by OH,II. 5-85% of at least one aliphatic or mixed aliphatic/aromatic polycondensation product or polyaddition product, polyether, or vinyl polymer with a glass temperature T.sub.G of up to 40.degree. C. and/or a vinyl monomer-grafted derivative thereof, andIII. 5-85% of at least one organopolysiloxane modified by grafting with at least one vinyl monomer and comprising(A) 10-90% of a diorganopolysiloxane optionally terminated by OH,(B) 10-90% of polymerized units of at least one vinyl compound, and(C) 0-80% of at least one aliphatic or mixed aliphatic/aromatic polycondensation product or polyaddition product, polyether, or vinyl polymer with a glass temperature T.sub.G of up to 40.degree. C.

    摘要翻译： 本发明涉及在暴露于大气中的水分时在室温下交联的特殊的稳定分散体。 分散体包括聚硅氧烷，乙烯基接枝的聚硅氧烷和缩合产物，例如 约20-90％的至少一种二羟基硅氧烷，任选被OH，II终止。 5-85％至少一种脂族或混合的脂族/芳族缩聚产物或加聚产物，玻璃温度TG高达40℃的聚醚或乙烯基聚合物和/或其乙烯基单体接枝衍生物和III 。 通过与至少一种乙烯基单体接枝改性的至少一种有机聚硅氧烷的5-85％，并且包含（A）10-90％的任选被OH封端的二有机聚硅氧烷，（B）10-90％的至少一种乙烯基的聚合单元 化合物，和（C）0-80％的至少一种脂族或混合的脂族/芳族缩聚产物或加聚产物，聚醚或乙烯基聚合物，玻璃温度TG高达40℃。

    Coatings for thermoplastics
    38.
    发明授权
    Coatings for thermoplastics 失效
    热塑性塑料涂料

    公开(公告)号：US4315091A

    公开(公告)日：1982-02-09

    申请号：US137699

    申请日：1980-04-07

    申请人： Helmut Steinberger ,  Manfred Schonfelder ,  Hans-Heinrich Moretto ,  Christian Wegner

    发明人： Helmut Steinberger ,  Manfred Schonfelder ,  Hans-Heinrich Moretto ,  Christian Wegner

    IPC分类号： C08L83/00 ,  B32B27/00 ,  C08G18/61 ,  C08J7/04 ,  C08K5/09 ,  C08L83/04 ,  C09D183/04 ,  C08G77/04

    CPC分类号： C08J7/047 ,  C08G18/61 ,  C08K5/09 ,  C09D183/04 ,  C08J2483/00 ,  Y10T428/31507 ,  Y10T428/31663

    摘要： A coating composition to improve the abrasion and scratch resistance of plastics such as polycarbonate, consisting essentially of about(A) 10-40% by weight of a partially hydrolyzed siloxane compound which is obtained by hydrolyzing in water at about 50.degree.-80.degree. C. over a period of about 1-12 hours at least one of(a) a hydrocarbon-trialkoxysilane of the formula R'Si(OR").sub.3 whereinR' is an alkyl group with 1 to 4 carbon atoms or a phenyl or vinyl group, andR" is an alkyl group with 1 to 4 carbon atoms,(b) a co-condensation product of (a) and about 1 to 40% by weight of a phenyl- or vinyl-trialkoxysilane, the alkoxy group containing 1 to 4 carbon atoms,(c) a co-condensation product of 1 mol of (a) and 0.05 to 1 mol of a tetraalkoxysilane, in which the alkoxy group contains 1 to 4 carbon atoms, and(d) a co-condensation product of 1 mol of (a) and 0.05 to 1 of a dialkyldialkoxysilane, in which the alkyl and alkoxy groups contain 1 to 4 carbon atoms.(B) 0 to 40% by weight of an aqueous dispersion of colloidal silicon dioxide,(C) 0 to 5% by weight of an etherified methylolmelamine,(D) 0.05 to 15% by weight of a blocked polyisocyanate,(E) 0.5 to 30% by weight of acetic acid, and(F) an inert organic solvent as the remainder.

    摘要翻译： 一种用于改善诸如聚碳酸酯的塑料的耐擦伤性和耐擦伤性的涂料组合物，其基本上由约（A）10-40％（重量）部分水解的硅氧烷化合物组成，所述部分水解的硅氧烷化合物通过在约50-80℃的水中水解获得 在约1-12小时的时间内，（a）式R'Si（OR“）3的烃 - 三烷氧基硅烷中的至少一种，其中R'是具有1至4个碳原子的烷基或苯基或 乙烯基，R“是具有1至4个碳原子的烷基，（b）（a）和约1至40重量％的苯基或乙烯基 - 三烷氧基硅烷的共缩合产物，烷氧基 含有1〜4个碳原子的烷氧基，（c）1摩尔（a）和0.05〜1摩尔含有1〜4个碳原子的烷氧基的四烷氧基硅烷的共缩合产物，（d） 1摩尔（a）和0.05〜1的烷基和烷氧基含有1〜4个碳原子的二烷基二烷氧基硅烷的缩合产物。 （B）0〜40重量％胶体二氧化硅水分散体，（C）0〜5重量％的醚化羟甲基三聚氰胺，（D）0.05〜15重量％的封端多异氰酸酯，（E）0.5 至30重量％的乙酸，和（F）作为其余的惰性有机溶剂。