Novel organopolysiloxane, method for the preparation thereof and
composition containing the same
    3.
    发明授权
    Novel organopolysiloxane, method for the preparation thereof and composition containing the same 失效
    新型有机聚硅氧烷,其制备方法和含有它们的组合物

    公开(公告)号:US4683320A

    公开(公告)日:1987-07-28

    申请号:US878002

    申请日:1986-06-24

    摘要: In the alkenyl-containing diorganopolysiloxane of the invention, the distribution of the alkenyl groups in the molecule is not random as in conventional alkenyl-containing diorganopolysiloxanes but each of at least three siloxane units linked to each of the terminal silicon atoms has an alkenyl, e.g. vinyl, group while at least six of the uninterruptedly linked siloxane units excepting the above mentioned alkenyl-containing units adjacent to the molecular chain ends are free from aliphatic unsaturation. A method for the preparation of the diorganopolysiloxane having the alkenyl groups in such a localized distribution is disclosed. When the diorganopolysiloxane is used as the principal ingredient of a curable organopolysiloxane composition as combined with a crosslinking agent, the composition, despite its relatively low viscosity, can give a cured rubber having markedly improved mechanical strengths.

    摘要翻译: 在本发明的含链烯基的二有机聚硅氧烷中,分子中链烯基的分布不像常规的含链烯基的二有机聚硅氧烷那样是无规的,但是每个末端硅原子连接的至少三个硅氧烷单元中的每一个都具有链烯基。 乙烯基,而除上述与分子链末端相邻的含烯基单元之外的至少六个不间断连接的硅氧烷单元不含脂族不饱和基团。 公开了一种在这种局部分布中制备具有烯基的二有机聚硅氧烷的方法。 当二有机聚硅氧烷用作可交联有机聚硅氧烷组合物与交联剂组合的主要成分时,组合物尽管具有较低的粘度,但可以得到具有明显改善的机械强度的固化橡胶。

    Method for forming a surface film of cured organosilicon polymer on a
substrate surface
    4.
    发明授权
    Method for forming a surface film of cured organosilicon polymer on a substrate surface 失效
    在基材表面上形成固化的有机硅聚合物的表面膜的方法

    公开(公告)号:US4678688A

    公开(公告)日:1987-07-07

    申请号:US834906

    申请日:1986-02-28

    IPC分类号: C08G77/54 C09D183/14 B05D3/02

    摘要: The inventive method for forming a cured film on a substrate surface comprises coating the surface with a room temperature curable organosiloxazane polymer comprising, in a molecule, (a) at least one organosiloxane unit represented by the unit formula (a) at least one organosiloxane unit represented by the unit formulaR.sup.1.sub.a SiO.sub.(4-a)/2,and (b) at least one organosilazane unit represented by the unit formulaR.sup.2.sub.b Si(NR.sup.3).sub.(4-b)/2,in which R.sup.1, R.sup.2 and R.sup.3 are each a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group, not all of them being simultaneously hydrogen atoms, and the subscripts a and b are each a positive integer of 1, 2 or 3 with the proviso that a and b cannot be simultaneously equal to 3, in a molecule and subjecting the coating film to exposure to a moisture-containing atmosphere. The method is useful for forming a surface-protecting film or for imparting surface releasability.

    摘要翻译: 用于在基材表面上形成固化膜的本发明方法包括用室温可固化的有机硅氮烷聚合物涂覆表面,所述室温可固化的有机硅氮烷聚合物在分子中包含(a)至少一个由式(a)表示的有机硅氧烷单元,至少一个有机硅氧烷单元 由式R1aSiO(4-a)/ 2表示的至少一种有机硅氮烷单元,(b)由单元式R2bSi(NR3)(4-b)/ 2表示的至少一种有机硅氮烷单元,其中R1,R2和R3各自为 氢原子或取代或未取代的一价烃基,并不全部同时为氢原子,下标a和b各自为正整数1,2或3,条件是a和b不能同时为3 在分子中并使涂膜暴露于含水气氛。 该方法可用于形成表面保护膜或赋予表面剥离性。

    Ultraviolet-curable organopolysiloxane composition
    5.
    发明授权
    Ultraviolet-curable organopolysiloxane composition 失效
    紫外线固化型有机聚硅氧烷组合物

    公开(公告)号:US4810731A

    公开(公告)日:1989-03-07

    申请号:US179832

    申请日:1988-04-08

    摘要: Whereas the mechanism for the crosslink formation in the curable organopolysiloxane composition of the invention is the ultraviolet-induced addition reaction between alkenyl, e.g., vinyl, groups in a diorganopolysiloxane and mercaptoalkyl groups in another organopolysiloxane as in conventional compositions, the mercaptoalkyl-containing organopolysiloxane used in the invention is, differently from those in conventional compositions, an organopolysiloxane of a three-dimensionally branched molecular structure as composed of the siloxane units of the formulas R.sup.1.sub.3 SiO.sub.0.5, R.sup.1.sub.a (HSR.sup.2)SiO.sub.(3-a)/2 and SiO.sub.2, in which R.sup.1 is, for example, a methyl or phenyl group, R.sup.2 is, for example, --CH.sub.2 CH.sub.2 CH.sub.2 -- and a is zero, 1 or 2, in a specified proportion. In addition, the vinyl group-containing siloxane units in the vinyl-containing diorganopolysiloxane are localized in the molecular structure forming two blocks each bonded to one of the terminal silicon atoms. The inventive composition is advantageous in respect of the greatly improved mechanical strengths of the cured silicone rubber obtained by irradiating the composition with ultraviolet light.

    摘要翻译: 而在本发明的可固化的有机基聚硅氧烷组合物中交联形成的机理是在二有机聚硅氧烷中的链烯基,例如乙烯基,另一有机聚硅氧烷中的巯基烷基之间的紫外线诱导的加成反应,所用的含巯基烷基的有机基聚硅氧烷 在本发明中,与常规组合物不同,由式R13SiO0.5,R1a(HSR2)SiO(3-a)/ 2和SiO2组成的三维支化分子结构的有机聚硅氧烷, 其中R1为例如甲基或苯基,R2为例如-CH2CH2CH2-,a为0,1或2,为规定比例。 此外,含乙烯基的二有机聚硅氧烷中的含乙烯基的硅氧烷单元位于形成两个键合到末端硅原子之一的两个嵌段的分子结构中。 本发明的组合物在通过用紫外光照射组合物获得的固化的硅橡胶的极大改善的机械强度方面是有利的。

    Optical fibers and core-forming compositions
    6.
    发明授权
    Optical fibers and core-forming compositions 失效
    光学纤维和核心成分组合物

    公开(公告)号:US5204435A

    公开(公告)日:1993-04-20

    申请号:US604526

    申请日:1990-10-29

    IPC分类号: G02B1/04

    摘要: A composition comprising (a) an organopolysiloxane having a unit of the formula: RSiO.sub.3/2 wherein R is a substituted or unsubstituted monovalent C.sub.1-10 hydrocarbon group in its molecule and having at least 0.05 alkenyl groups each directly attached to a silicon atom per silicon atom, (b) an organohydrogenpolysiloxane having at least 2 hydrogen atoms each directly attached to a silicon atom per molecule, and (c) a platinum catalyst, maintains good light transmission in cured form when exposed to humidity or stresses and is thus suitable for forming cores of optical fibers.

    摘要翻译: 一种组合物,其包含(a)具有下式的单元的有机聚硅氧烷:RSiO 3/2其中R是其分子中的取代或未取代的一价C 1-10烃基,并且每个硅直接连接至硅原子上至少有0.05个烯基 原子,(b)具有每个分子直接连接到硅原子上的至少2个氢原子的有机氢聚硅氧烷,和(c)铂催化剂,当暴露于湿度或应力时,其固化形式保持良好的透光性,因此适于形成 光纤芯。

    Optical fiber coated with an organopolysiloxane curable with actinic rays
    7.
    发明授权
    Optical fiber coated with an organopolysiloxane curable with actinic rays 失效
    涂有可用光化射线固化的有机聚硅氧烷的光纤

    公开(公告)号:US4733942A

    公开(公告)日:1988-03-29

    申请号:US930002

    申请日:1986-11-12

    摘要: The coated optical fiber of the invention is prepared by providing a coating layer of an ultraviolet-curable organopolysiloxane or a composition comprising the same and irradiating the coating layer with ultraviolet. Specifically, each of the terminal silicon atoms of the organopolysiloxane, which preferably has a linear molecular structure, has two or more ethylenically unsaturated polymerizable groups bonded thereto through an oxygen atom, such as CH.sub.2 .dbd.CHCOOCH.sub.2 CH.sub.2 --, [CH.sub.2 .dbd.C(CH.sub.3)COOCH.sub.2 ].sub.3 C--CH.sub.2 --and (CH.sub.2 .dbd.CHCOOCH.sub.2).sub.2 C(C.sub.2 H.sub.5)CH.sub.2 --. By virtue of this unique molecular structure of the organopolysiloxane, the coating layer is rapidly cured by ultraviolet irradiation to give a cured coating layer exhibiting very low water absorption and small temperature dependency of the Young's modulus at low temperatures.

    摘要翻译: 通过提供可紫外线固化的有机聚硅氧烷的涂层或包含该涂层的组合物制备本发明的涂覆光纤,并用紫外线照射该涂层。 具体地,优选具有线性分子结构的有机聚硅氧烷的末端硅原子具有通过氧原子如CH 2 = CHCOOCH 2 CH 2 - ,[CH 2 = C(CH 3)COOCH 2)与氧原子键合的两个或更多个烯键式不饱和可聚合基团 ] C 3 -C 12 - 和(CH 2 = CHCOOCH 2)2 C(C 2 H 5)CH 2 - 。 由于有机聚硅氧烷的这种独特的分子结构,通过紫外线照射使涂层快速固化,得到在低温下表现出非常低的吸水率和较小的杨氏模量温度依赖性的固化涂层。

    Organopolysiloxane polymers and method for making
    9.
    发明授权
    Organopolysiloxane polymers and method for making 失效
    有机聚硅氧烷聚合物及其制备方法

    公开(公告)号:US5096991A

    公开(公告)日:1992-03-17

    申请号:US550525

    申请日:1990-07-10

    申请人: Shohei Kozakai

    发明人: Shohei Kozakai

    IPC分类号: C08G77/48 C08G77/52 C08L83/14

    CPC分类号: C08G77/52 C08L83/14

    摘要: An organopolysiloxane homopolymer or copolymer comprising recurring units of the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from monovalent hydrocarbon groups, Q is a divalent aromatic hydrocarbon group, and letter n is an integer of from 1 to 4 has a high melting point and a high glass transition temperature and cures into products having a high modulus of elasticity and mechanical strength and thus suitable for various industrial applications. The polymer is prepared by a simple method involving the steps of reacting an alkali metal salt of a dihydroxy aromatic compound with a halogenated alkyl diorganoalkoxysilane, hydrolyzing the resulting bis(alkoxysilylalkoxy)arylene compound, and polycondensing the resulting bis(hydroxysilylalkoxy)arylene compound.

    摘要翻译: 包含以下通式的重复单元的有机聚硅氧烷均聚物或共聚物:其中R 1和R 2独立地选自一价烃基,Q是二价芳族烃基,并且字母n是1至4的整数 具有高熔点和高玻璃化转变温度,并且固化成具有高弹性模量和机械强度的产品,因此适用于各种工业应用。 通过简单的方法制备聚合物,该方法包括使二羟基芳族化合物的碱金属盐与卤代烷基二有机基烷氧基硅烷反应,水解得到的双(烷氧基甲硅烷基烷氧基)亚芳基化合物,和缩聚得到的双(羟基甲硅烷基烷氧基)亚芳基化合物的步骤。

    Optical waveguide
    10.
    发明授权
    Optical waveguide 失效
    光波导

    公开(公告)号:US5519803A

    公开(公告)日:1996-05-21

    申请号:US302182

    申请日:1994-09-09

    IPC分类号: G02B6/12 G02B6/132 G02B6/10

    CPC分类号: G02B6/132

    摘要: Proposed is an improved optical waveguide consisting of a substrate plate such as a silicon wafer, an undercladding layer of silica glass thereon, a core line of silica glass extending on the undercladding layer and having a larger refractive index than the undercladding layer and an overcladding layer of silica glass having a smaller refractive index than the core line to cover the undercladding layer and the core line thereon altogether. Different from conventional optical waveguides of this type, of which each of the undercladding layer, core line and overcladding layer is formed by the flame deposition method of silica or electron-beam vapor deposition method followed by vitrification taking a relatively long time, the overcladding layer in the inventive optical waveguide is formed by forming a layer of an organopolysiloxane resin on the undercladding layer and core line followed by the oxidative thermal decomposition of the resin into silica and vitrification of the same. Alternatively, an optical waveguide, which is conventional as mentioned above but of which the thickness of the overcladding layer is greatly decreased, is provided with a top coating layer from the organopolysiloxane resin as above. The inventive optical waveguides can be manufactured with greatly increased productivity.

    摘要翻译: 提出了一种改进的光波导,其由诸如硅晶片的基板,其上的二氧化硅玻璃的下包层,在下包层上延伸并且具有比下封层更大的折射率的石英玻璃芯线和外包层 具有比芯线折射率小的石英玻璃,以覆盖下包层和其上的芯线。 与传统的这种类型的光波导不同,其中通过二氧化硅的火焰沉积法或电子束气相沉积法形成下包层,芯线和外包层中的每一个,随后玻璃化花费相当长的时间,外包层 在本发明的光波导中通过在下包层和芯线上形成有机聚硅氧烷树脂层,然后将树脂氧化热分解成二氧化硅并使其玻璃化而形成。 或者,如上所述的常规的,但是外包层的厚度大大降低的光波导由如上所述的有机聚硅氧烷树脂设置有顶涂层。 本发明的光波导可以大大提高生产率来制造。