Method for making polysilazanes
    2.
    发明授权
    Method for making polysilazanes 失效
    聚硅氮烷的制备方法

    公开(公告)号:US4675424A

    公开(公告)日:1987-06-23

    申请号:US841545

    申请日:1986-03-19

    CPC分类号: C08G77/62 C04B35/589 C07F7/10

    摘要: A method of preparing silazane polymers, with 3 or more repeating units, of the general formula--((CH.sub.3).sub.2 N).sub.e Si(R).sub.a (R'HN).sub.f H.sub.c (NR').sub.g --and a (CH.sub.3).sub.2 NH byproduct group where R is hydrogen, an alkyl group having 1-6 carbon atoms or an aryl group having 6-12 carbon atoms, a=0, or 1, b=2-4, C=0-2, d=0 or 1, e=0-2, f=0-2, g=1-3 and a+c+e+f+g=4 for the polymer units; and R' is hydrogen or methyl, whereby the silazane polymer is substantially free of halide impurities, and wherein this method comprises:transaminating an aminosilane of the general formula (R).sub.a ((CH.sub.3).sub.2 N).sub.b H.sub.c S; where R is defined as above and a+b+c=4 with an amine of the general formula (CH.sub.3).sub.d NH.sub.3-d whereby d is defined as above and the amine has a molecular weight lower than 45 all in the presence of an acid catalyst or the ammonium salt of the acid and thereafter condensing to form the polymer.

    摘要翻译: 制备具有3个以上重复单元的具有通式 - ((CH 3)2 N)e Si(R)a(R'HN)fHc(NR')g - 和(CH 3)2 NH副产物基团)的硅氮烷聚合物的方法 其中R是氢,具有1-6个碳原子的烷基或具有6-12个碳原子的芳基,a = 0或1,b = 2-4,C = 0-2,d = 0或1, 对于聚合物单元,e = 0-2,f = 0-2,g = 1-3和a + c + e + f + g = 4; 并且R'是氢或甲基,由此硅氮烷聚合物基本上不含卤化物杂质,并且其中该方法包括:将通式(R)a((CH 3)2 N)b H c S的氨基硅烷转氨酸; 其中R如上所定义,a + b + c = 4与通式(CH3)dNH3-d的胺反应,其中d如上定义,胺在酸存在下全部分子量低于45 催化剂或酸的铵盐,然后冷凝形成聚合物。

    Silyl carbamates and synthesis thereof
    3.
    发明授权
    Silyl carbamates and synthesis thereof 失效
    甲硅烷基氨基甲酸酯及其合成

    公开(公告)号:US4496754A

    公开(公告)日:1985-01-29

    申请号:US454178

    申请日:1982-12-28

    IPC分类号: C07F7/04 C07F7/18 C07F7/10

    CPC分类号: C07F7/045 C07F7/1896

    摘要: Silyl carbamates are produced by the reaction under suitable reaction conditions of silanes bearing at least one silicon-hydrogen bond of the formula: R.sub.4-x SiH.sub.x with an ammonium carbamate of the formula: R'R"NH.sub.2.sup..sym. R'R"NCO.sub.2.sup..crclbar.. This novel route is much simpler and more direct than those previously known and provides a new classes of silyl carbamates.

    摘要翻译: 甲硅烷基氨基甲酸酯通过在具有下式的至少一个硅氢键的硅烷的合适反应条件下通过反应产生:具有下式的R 4 -XSiH x与下式的氨基甲酸铵:R'R''NH 2(+)R'R“ NCO 2( - )。 这种新颖的路线比先前已知的更简单和更直接,并且提供了一类新的甲硅烷基氨基甲酸酯。

    Hydrogen bearing silyl carbamates
    5.
    发明授权
    Hydrogen bearing silyl carbamates 失效
    含氢甲硅烷基氨基甲酸酯

    公开(公告)号:US4400526A

    公开(公告)日:1983-08-23

    申请号:US430373

    申请日:1982-09-30

    IPC分类号: C07F7/10 C07F7/02 C07F7/18

    CPC分类号: C07F7/1896 C07F7/025

    摘要: A hydrogen bearing silyl carbamate of the general formula:HSiR.sub.n (O.sub.2 CNR'R").sub.3-nis synthesized from hydrogen bearing aminosilane and gaseous carbon dioxide. The resulting hydrogen bearing silyl carbamate is novel in the single hydrogen attached to the silyl carbamate and represents a major new compound for creating novel compositions of matter.

    摘要翻译: 由含氢氨基硅烷和气态二氧化碳合成具有通式:HSiRn(O 2 CNR'R“)3-n的含氢甲硅烷基氨基甲酸酯。 所产生的含氢甲硅烷基氨基甲酸酯在连接到甲硅烷基氨基甲酸酯的单氢中是新颖的,并且代表用于产生物质的新组合物的主要新化合物。

    Process for the preparation of alkoxyhydridosilanes
    6.
    发明授权
    Process for the preparation of alkoxyhydridosilanes 失效
    制备烷氧基硅烷的方法

    公开(公告)号:US4395564A

    公开(公告)日:1983-07-26

    申请号:US397815

    申请日:1982-07-13

    CPC分类号: C07F7/188 C07F7/025 C07F7/045

    摘要: A process whereby silanes of the general formula:HSi(NRR').sub.x (R").sub.3-xwherein R, R' and R" are independently an aliphatic or aromatic, substituted or unsubstituted, saturated or unsaturated hydrocarbon radical having from one to eight carbon atoms, inclusive and R and R' may also be hydrogen and where R" may also be alkoxy and where x has a value from one to three are reacted in the presence of a catalyst with alcohols in the stoichiometry of approximately one equivalent of alcohol per mole of silicon-nitrogen bond to give unexpectedly high yields of alkoxyhydridosilanes. In the reaction the silyl amine groups have been replaced by alkoxide groups without significant loss of the silicon-hydrogen group. Similar reactions in the absence of a catalyst give undesirably low yields of the corresponding alkoxy silanes and, in most cases, substantial loss of silyl hydrogen groups.

    摘要翻译: 一种方法,其中通式为:HSi(NRR')x(R“)3-x的硅烷,其中R,R'和R”独立地是脂族或芳族取代或未取代的饱和或不饱和烃基, 1至8个碳原子,包括R 1和R 2',R和R'也可以是氢,并且其中R“也可以是烷氧基,并且其中x具有1至3的值在催化剂存在下与大约化学计量的醇反应 每摩尔硅 - 氮键相当于1当量醇,从而产生了意想不到的高产率的烷氧基硅烷。 在反应中,甲硅烷基胺基已被烷氧基组所取代,硅氢基团没有明显的损失。 在不存在催化剂的情况下,类似的反应给出了相应的烷氧基硅烷的不合需要的低产率,并且在大多数情况下甲硅烷基氢基团显着损失。

    Process for the preparation of oximatohydridosilanes and
aminoxyhydridosilanes
    7.
    发明授权
    Process for the preparation of oximatohydridosilanes and aminoxyhydridosilanes 失效
    制备肟基羟基硅烷和氨基羟基硅烷的方法

    公开(公告)号:US4384131A

    公开(公告)日:1983-05-17

    申请号:US397814

    申请日:1982-07-13

    CPC分类号: C07F7/025

    摘要: A process whereby silanes of the general formulaHSi(NRR.sup.I).sub.x (R.sup.II).sub.3-xare reacted in the presence of a catalyst with oximes or hydroxylamines in the stoichiometry of approximately one equivalent of oxime or hydroxylamine per mole of silicon-nitrogen linkage to give unexpectedly high yields of substituted silanes.

    摘要翻译: 使通式为HSi(NRRI)x(RII)3-x的硅烷在催化剂存在下与肟或羟基胺反应的方法,其化学计量为每摩尔硅 - 氮键大约1当量肟或羟胺的化学计量, 取代硅烷出人意料地高产率。

    STABLE SUNSCREEN COMPOSITION CONTAINING DIBENZOYLMETHANE DERIVATIVE, E.G., PARSOL 1789, AND C12, C16, C18 BRANCHED CHAIN HYDROXYBENZOATE AND/OR C12, C16 BRANCHED CHAIN BENZOATE STABILIZERS/SOLUBILIZERS
    9.
    发明授权
    STABLE SUNSCREEN COMPOSITION CONTAINING DIBENZOYLMETHANE DERIVATIVE, E.G., PARSOL 1789, AND C12, C16, C18 BRANCHED CHAIN HYDROXYBENZOATE AND/OR C12, C16 BRANCHED CHAIN BENZOATE STABILIZERS/SOLUBILIZERS 有权
    含有二苯甲基甲基衍生物的稳定的SUNCREEN组合物,E.G.,PARSOL 1789和C12,C16,C18分支链羟基苯甲酸酯和/或C12,C16分支链苯甲酸酯稳定剂/溶剂

    公开(公告)号:US06350894B1

    公开(公告)日:2002-02-26

    申请号:US09523336

    申请日:2000-03-10

    IPC分类号: C07C6988

    摘要: A sunscreen composition containing a UV-B dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4′-methoxydibenzoylmethane (PARSOL 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative selected from formula (I) and formula (II), and mixtures thereof: wherein m=5, 7, 9 or mixtures and n=4, 6, 8 or mixtures; wherein p1 m=5, 7 or mixtures and n=4, 6 or mixtures. These long branched chain alkyl hydroxybenzoates and long branched chain benzoates having a C4+ branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.

    摘要翻译: 含有UV-B二苯甲酰甲烷衍生物如4-(1,1-二甲基乙基)-4'-甲氧基二苯甲酰甲烷(PARSOL 1789)的防晒组合物和选自式(I)和式(I)的二苯甲酰甲烷衍生物的稳定剂/增溶剂 II)及其混合物:其中m = 5,7,9或混合物,并且= 4,6,8或混合物;其中p1 m = 5,7或混合物,n = 4,6或其混合物。这些长支链烷基羟基苯甲酸酯和 在2位具有C4 +分支的长支链苯甲酸酯在稳定二苯甲酰甲烷衍生物UV-B过滤器化合物方面非常有效,使得它们更有效; 有效期较长。