Room temperature crosslinkable compositions
    1.
    发明授权
    Room temperature crosslinkable compositions 失效
    室温可交联组合物

    公开(公告)号:US4801673A

    公开(公告)日:1989-01-31

    申请号:US69749

    申请日:1987-07-06

    CPC分类号: C08K5/5406 Y10S528/901

    摘要: Compositions which are storable under anhydrous conditions, but when exposed to atmospheric moisture crosslink at room temperature to form elastomers comprising a diorganopolysiloxane having one Si-bonded hydroxyl group in each of its terminal units, and a cyclic silane of the formula ##STR1## where R represents a divalent hydrocarbon radical, R.sup.1 represents the same or different monovalent hydrocarbon radicals, which can be substituted by an alkoxy group, and R.sup.2 represents hydrogen or an alkyl or aminoalkyl radical in which the silicon atom of the cyclic silane is bonded to a nitrogen atom and to two monovalent hydrocarbon radicals, which can be substituted with an alkoxy group via oxygen and to a hydrocarbon radical via carbon.

    摘要翻译: 可在无水条件下储存的组合物,但当暴露于大气中的水分在室温下交联以形成包含其每个末端单元中具有一个与Si键合的羟基的二有机聚硅氧烷的弹性体,以及具有下式的环状硅烷:其中R 表示二价烃基,R 1表示可被烷氧基取代的相同或不同的一价烃基,R 2表示氢或环状硅烷的硅原子与氮原子键合的烷基或氨基烷基 和可以被烷氧基经由氧取代的两个一价烃基和通过碳取代烃基。

    Room temperature curable compositions
    3.
    发明授权
    Room temperature curable compositions 失效
    室温固化组合物

    公开(公告)号:US4296228A

    公开(公告)日:1981-10-20

    申请号:US126230

    申请日:1980-03-03

    IPC分类号: C08L83/04 C08G77/04

    摘要: Room temperature curable compositions, which can be stored under anhydrous conditions, but when exposed to atmospheric moisture at room temperature cure to an elastomer comprising a diorganopolysiloxane having terminal condensable groups, a silicon compound containing acetoxy, tert-butoxy and SiC-bonded alkyl groups and a condensation catalyst, if desired, in which at least a portion of the silicon compound containing acetoxy, tert-butoxy and SiC-bonded alkyl groups is obtained from the reaction of an alkyltriacetoxysilane and tert-butanol in aqueous acetic acid.

    摘要翻译: 室温可固化组合物,其可以在无水条件下储存,但是当暴露于常温水分时在室温下固化到包含具有末端可缩合基团的二有机聚硅氧烷,含有乙酰氧基,叔丁氧基和与SiC键合的烷基的硅化合物的弹性体,以及 如果需要,缩合催化剂,其中至少一部分含有乙酰氧基,叔丁氧基和与SiC键合的烷基的硅化合物是由烷基三乙酰氧基硅烷和叔丁醇在乙酸水溶液中的反应得到的。

    Organopolysiloxanes having retarded skin formation
    4.
    发明授权
    Organopolysiloxanes having retarded skin formation 失效
    有机聚硅氧烷延缓皮肤形成

    公开(公告)号:US4399267A

    公开(公告)日:1983-08-16

    申请号:US401809

    申请日:1982-07-26

    摘要: The invention relates to organopolysiloxane compositions which are stable when stored under anhydrous conditions, but when exposed to moisture cure to an elastomer containing (a) a diorganopolysiloxane having terminal condensable groups, (b) a silicon compound having 3 amino groups bonded to silicon via nitrogen and/or oxime groups bonded to silicon via oxygen per molecule and (c) a silicon compound having at least one thiol group selected from mercapto-functional silanes or siloxanes. The presence of the mercapto-functional silanes or siloxanes substantially retards the formation of skin but does not substantially extend the cure time of the organopolysiloxanes compositions. These compositions are useful in, for example, screen printing, where a long skin-over time is desired.

    摘要翻译: 本发明涉及有机聚硅氧烷组合物,其在无水条件下储存时是稳定的,但当暴露于水分固化至含有(a)具有末端可缩合基团的二有机聚硅氧烷的弹性体时,(b)具有3个氨基的硅化合物通过氮键接到硅上, 和/或每分子通过氧键连接至硅的肟基团和(c)具有至少一个选自巯基官能硅烷或硅氧烷的硫醇基团的硅化合物。 巯基官能硅烷或硅氧烷的存在基本上延缓了皮肤的形成,但基本上延长了有机聚硅氧烷组合物的固化时间。 这些组合物可用于例如期望丝网印刷长时间的丝网印刷。

    Organopolysiloxane materials which can be cross-linked by cleaving alcohols into elastomers
    8.
    发明授权
    Organopolysiloxane materials which can be cross-linked by cleaving alcohols into elastomers 失效
    可通过将醇裂解成弹性体而交联的有机聚硅氧烷材料

    公开(公告)号:US06531621B1

    公开(公告)日:2003-03-11

    申请号:US09582143

    申请日:2000-07-18

    IPC分类号: C07F708

    摘要: The invention relates to a method for producing organopolysiloxane terminated with alkoxy groups, wherein A) organopolysiloxane terminated with HO is reacted with B) alkoxysilane having at least three alkoxy groups and/or whose partial hydrolysate is made to react in the presence of C) acid phosphoric acid ester of general formula (I): (HO)aOP(—O—[(CR12)b—O]c[(CR22)d]e—L—M)(3−a), wherein a=1 or 2; R1 and R2=a hydrogen, methyl or hydroxyl radical; b and d=2 or 3; c=integral values from 2 to 15; e=0 or 1; L=a radical from the group —O—, —COO—, —OOC—, —CONR3—, —NR4CO— and —CO—; R3 and R4=a hydrogen or a C1-C10-alkyl radical and M=a monovalent, optionally a hydroxyl, fluorine, chlorine, bromine, C1-C10-alkoxylalkyl or cyano group substituted C1- to C20-hydrocarbon radical, provided that the radicals R1 and R2 can only be at one given time a hydroxyl radical in each hydrocarbon atom. The invention further relates to RTV-1-alkoxy masses comprising the reaction product containing organopolysiloxane terminated with alkoxy groups as the essential constituent.

    摘要翻译: 本发明涉及一种制备用烷氧基封端的有机聚硅氧烷的方法,其中A)用HO封端的有机聚硅氧烷与B反应,B)具有至少三个烷氧基的烷氧基硅烷和/或其部分水解产物在C)酸存在下反应 (I)的磷酸酯:(HO)aOP(-O - [(CR12)bO] c [(CR22)d] eLM)(3-a),其中a = 1或2; R1和R2 =氢,甲基或羟基; b和d = 2或3; c =从2到15的积分值; e = 0或1; L =从-O - , - O - , - OOC - , - CONR 3 - , - NR 4 CO - 和-CO - 基团的基团; R 3和R 4 =氢或C 1 -C 10 - 烷基,M =单价,任选的羟基,氟,氯,溴,C 1 -C 10 - 烷氧基烷基或氰基取代的C 1 -C 20烃基,条件是 基团R 1和R 2只能在一个给定时间在每个烃原子中具有羟基。 本发明还涉及包含以烷氧基为终点的有机聚硅氧烷作为必要成分的反应产物的RTV-1-烷氧基团。