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公开(公告)号：US5550185A
公开(公告)日：1996-08-27
申请号：US240530
申请日：1994-05-10
摘要： The silicone rubber composition of the present invention comprises (A) an organopolysiloxane obtained by mixing and heating an organopolysiloxane having a silanol group at both ends of the molecular chain and a silane or a siloxane having two hydrolyzable groups in the molecule, (B) a finely divided silica, and (C) a curing agent. The composition, wherein the content of low-molecule siloxanes is remarkably constrained, is quite useful in the application wherein low-molecular siloxanes are obnoxious, for example, in the application of electrical contacts and parts used adjacent thereto, roll materials of copying machines, gaskets for construction, etc.
摘要翻译： 本发明的硅橡胶组合物包含（A）通过混合并加热分子链两端具有硅烷醇基的有机聚硅氧烷和分子中具有两个可水解基团的硅烷或硅氧烷获得的有机聚硅氧烷，（B） 细分二氧化硅，（C）固化剂。 其中低分子硅氧烷的含量被显着约束的组合物在其中低分子硅氧烷是恶劣的应用中是非常有用的，例如在应用电触点和与其相邻使用的部件，复印机的卷材， 建筑垫片等
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公开(公告)号：US5502146A
公开(公告)日：1996-03-26
申请号：US298860
申请日：1994-08-31
CPC分类号： C08L83/04 , C08G77/06 , C08G77/045 , C08G77/16 , C08G77/26
摘要： A method of producing a silicone rubber composition, comprising heating a mixture of an organopolysiloxane having a silanol group at both the ends of the molecular chain, a end blocking agent, such as a triorganosilanol, a silane or a siloxane having two dialkylaminosilyl groups in the molecule, and a reinforcing filler thereby carrying out chain lengthening and end blocking of said organopolysiloxane. According to this method, a silicone rubber composition whose low-molecular siloxane content is held down remarkably can be produced without consuming a large amount of energy for the mixing.
摘要翻译： 一种硅橡胶组合物的制造方法，其特征在于，在所述分子链的两端加入具有硅烷醇基的有机聚硅氧烷，三有机硅烷醇等封端剂，硅烷或具有二烷基氨基甲硅烷基的硅氧烷的混合物 分子和增强填料，从而进行所述有机聚硅氧烷的链延长和端部封闭。 根据该方法，可以制造低分子量硅氧烷含量显着降低的硅橡胶组合物，而不会消耗大量的用于混合的能量。
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3.发明授权
公开(公告)号：US5449735A
公开(公告)日：1995-09-12
申请号：US240886
申请日：1994-05-11
摘要： Organopolysiloxanes having a silanol group at both terminal ends of molecular chain thereof are brought into condensation reaction with each other in the presence of a silane or siloxane having at least two dialkylaminosilyl groups per molecule as a condensation catalyst and a triorganosilanol or other endblocking agent, to lengthen the chain of the organopolysiloxane under reaction, whereby a triorganosilyl-endblocked organopolysiloxane with a high polymerization degree is obtained. The process yields a triorganosilyl-endblocked high-polymerization-degree organopolysiloxane while effectively suppressing or preventing the formation of low-molecular-weight siloxanes.
摘要翻译： 在其分子链的两个末端具有硅烷醇基团的有机聚硅氧烷在每分子具有至少两个二烷基氨基甲硅烷基的硅烷或硅氧烷作为缩合催化剂和三有机硅烷醇或其它封端剂的存在下进行缩合反应， 在反应中延长有机聚硅氧烷的链，得到具有高聚合度的三有机甲硅烷基封端的有机聚硅氧烷。 该方法产生三有机甲硅烷基封端的高聚合度有机聚硅氧烷，同时有效抑制或防止低分子量硅氧烷的形成。
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公开(公告)号：US5468830A
公开(公告)日：1995-11-21
申请号：US189333
申请日：1994-01-31
申请人： Yoshio Inoue , Susumu Sekiguchi , Minoru Igarashi
发明人： Yoshio Inoue , Susumu Sekiguchi , Minoru Igarashi
CPC分类号： C08G77/06 , C08L83/04 , C08G77/045 , C08G77/16 , C08G77/20 , C08G77/24 , C08G77/26 , C08G77/70
摘要： A siloxane gum is prepared by adding a silane or siloxane having two hydrolyzable groups in a molecule to a silanol-terminated organopolysiloxane in such an amount to give a molar ratio of silanol group/hydrolyzable group of from 0.5 to 3 and effecting condensation polymerization. The resulting organopoly-siloxane has a degree of polymerization of higher than 1,000 and a minimized content of low-molecular weight cyclic siloxanes of less than 5,000 ppm.
摘要翻译： 通过将分子中具有两个可水解基团的硅烷或硅氧烷加入到硅烷醇封端的有机聚硅氧烷中，使得硅烷醇基/可水解基团的摩尔比为0.5至3并进行缩聚制备硅氧烷胶。 得到的有机聚硅氧烷的聚合度高于1,000，低分子量环状硅氧烷的含量最小值低于5,000ppm。
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公开(公告)号：US5449714A
公开(公告)日：1995-09-12
申请号：US159164
申请日：1993-11-30
摘要： A conductive silicone rubber composition is prepared by mixing an organopolysiloxane having an aminoalkyl radical, an organopolysiloxane having a (meth)acryloxyalkyl or glycidoxyalkyl radical, and conductive carbon black to form silicone rubber composition (A) in which the carbon black is fixed, and then mixing it with a silicone rubber composition (B) comprising a dimethylpolysiloxane. The composition has stable resistivity in the semiconductive region independent of molding conditions.
摘要翻译： 通过混合具有氨基烷基的有机聚硅氧烷，具有（甲基）丙烯酰氧基烷基或缩水甘油氧基烷基的有机聚硅氧烷和导电性炭黑，形成其中固定有碳黑的硅橡胶组合物（A），制备导电硅橡胶组合物，然后 将其与包含二甲基聚硅氧烷的硅橡胶组合物（B）混合。 组合物在半导体区域中具有稳定的电阻率，与成型条件无关。
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公开(公告)号：US5488125A
公开(公告)日：1996-01-30
申请号：US392116
申请日：1995-02-22
申请人： Naoki Omura , Minoru Igarashi , Yoshio Inoue , Masaharu Takahashi
发明人： Naoki Omura , Minoru Igarashi , Yoshio Inoue , Masaharu Takahashi
CPC分类号： C07F7/0836 , C07F7/0874 , C07F7/0885
摘要： A manufacturing method of organosilanes having silanol groups which is characterized by mixing organoalkoxy silanes, having at most a 20 ppm content of chlorine, expressed by the general chemical formula (1) below:Si(R.sup.1).sub.m (R.sup.2).sub.n (OR.sup.3).sub.k (1)wherein each of R.sup.1 and R.sup.2 is either a substituted or unsubstituted monovalent hydrocarbon group; R.sup.3 is an alkyl group of 1 to 4 carbon atoms; subscripts m and n are 0, 1, 2, or 3; k is either 1 or 2; and the sum of subscripts m+n+k=4, with ion-exchanged water having an electroconductivity of at least 10.sup.10 M.OMEGA., then further adding a macro-porous cation-exchange resin with a pore volume measured by the mercury injection method of at least 0.1 ml/g to the said mixture, followed by stirring of the mixture and removal of the cation-exchange resin. According to the present invention, organosilanes having silanol groups which are useful as a dispersing agent in silicone rubbers may be obtained by a simple process from organoalkoxy silanes, such as relatively inexpensive dimethoxy dimethyl silane.
摘要翻译： 具有硅烷醇基的有机硅烷的制造方法，其特征在于混合由通式（1）表示的含有至多20ppm含量的有机烷氧基硅烷：Si（R 1）m（R 2）n（OR 3）k （1）其中R1和R2各自为取代或未取代的单价烃基; R3是1-4个碳原子的烷基; 下标m和n分别为0,1,2或3; k是1或2; 和下标m + n + k = 4的总和，其中离子交换水的电导率至少为1010M欧米茄，然后进一步加入具有通过汞注入法测量的孔体积的大孔阳离子交换树脂 至少0.1ml / g，然后搅拌混合物并除去阳离子交换树脂。 根据本发明，可以通过有机烷氧基硅烷如相对廉价的二甲氧基二甲基硅烷的简单方法获得在硅橡胶中用作分散剂的具有硅烷醇基的有机硅烷。
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公开(公告)号：US5256480A
公开(公告)日：1993-10-26
申请号：US774540
申请日：1991-10-08
申请人： Yoshio Inoue , Masaharu Takahashi
发明人： Yoshio Inoue , Masaharu Takahashi
IPC分类号： B32B25/02 , B32B7/02 , B32B7/04 , B32B25/20 , C08J5/12 , C08K3/04 , C08K3/36 , C08L83/04 , C08L83/05 , C08L83/07 , H01B1/24 , B32B9/04
CPC分类号： C08J5/12 , B32B25/20 , C08L83/04 , H01B1/24 , C08G77/12 , C08G77/16 , C08G77/20 , C08J2383/04 , Y10T428/259 , Y10T428/30 , Y10T428/31663
摘要： A silicone rubber laminate including a conductive layer of cured silicone rubber containing carbon black and a dielectric layer of cured silicone rubber stacked and integrated to each other. The bonding force is enhanced by applying to the conductive layer a dielectric uncured silicone rubber composition comprising (a) an organopolysiloxane containing at least two alkenyl groups per molecule, (b) an organopolysiloxane containing at least two SiH groups per molecule, (c) reinforcing silica, (d) an organic silicon compound having an alkenyl group per molecule, and (e) a platinum catalyst, the molar ratio of the SiH group in component (b) to the total alkenyl group in components (a) and (d) ranging from 1:1 to 4:1, and curing the composition.
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公开(公告)号：US5391593A
公开(公告)日：1995-02-21
申请号：US998032
申请日：1992-12-29
摘要： A silicone rubber composition comprising (A) an organopolysiloxane, (B) an organic peroxide and (C) carbon black cures under anaerobic conditions into silicone rubber having improved physical properties. A composition further comprising (D) an organopolysiloxane copolymer consisting essentially of M and Q units in a molar M/Q ratio of 6/10 to 9/10 forms an anaerobic adhesive composition which is a useful sealant.
摘要翻译： 一种硅橡胶组合物，其包含（A）有机聚硅氧烷，（B）有机过氧化物和（C）炭黑在厌氧条件下固化成具有改善的物理性能的硅橡胶。 进一步包含（D）主要由M / Q比为6/10至9/10的M和Q单元组成的有机聚硅氧烷共聚物形成厌氧粘合剂组合物，其是有用的密封剂。
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公开(公告)号：US5244967A
公开(公告)日：1993-09-14
申请号：US594948
申请日：1990-10-10
IPC分类号： C08K5/54 , C08K5/5419 , C08L83/04 , C08L83/06
CPC分类号： C08L83/04 , C08K5/5406 , C08K5/5419 , C08G77/12 , C08G77/14 , C08G77/16
摘要： Silicone rubber compositions based on an organopolysiloxane are improved in release properties by blending a silane having both a fluorinated hydrocarbon group and an alkanoyloxy group and/or an organopolysiloxane having an alkanoyloxy or alkanoyloxyalkyl group.
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公开(公告)号：US5179148A
公开(公告)日：1993-01-12
申请号：US698025
申请日：1991-05-10
摘要： A silicone rubber composition having excellent workability and extrusion-moldability and capable of giving cured silicone rubber articles having good mechanical properties is proposed, which is prepared by admixing, in addition to the conventional ingredients of an organopolysiloxane gum, a finely divided reinforcing silica filler and a curing agent such as an organic peroxide, a low molecular-weight organopolysiloxane having, in a molecule, at least three silanolic hydroxy groups which serves as a wetting agent of the silica filler so as to improve the compatibility of the silica filler with the organopolysiloxane gum giving a possibility of increasing the amount of the silica filler without adverse influences such as a decrease in the plasticity of the composition.
摘要翻译： 提出了具有优异的加工性和挤出成型性并能够得到具有良好机械性能的固化的硅橡胶制品的硅橡胶组合物，其通过将有机聚硅氧烷胶的常规成分，细碎的增强二氧化硅填料和 固化剂如有机过氧化物，低分子量有机聚硅氧烷，其在分子中具有至少三个硅烷醇羟基，其用作二氧化硅填料的润湿剂，以改善二氧化硅填料与有机聚硅氧烷的相容性 胶可以增加二氧化硅填料的量，而不会有不利影响，例如组合物的可塑性降低。
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