公开(公告)号：US06384125B1

公开(公告)日：2002-05-07

申请号：US09637953

申请日：2000-08-11

申请人： Debora Frances Bergstrom ,  Lisa Marie Boswell ,  Mark David Fisher ,  James Richard Hahn ,  Timothy A. Okel ,  Clifford Carlton Reese

发明人： Debora Frances Bergstrom ,  Lisa Marie Boswell ,  Mark David Fisher ,  James Richard Hahn ,  Timothy A. Okel ,  Clifford Carlton Reese

IPC分类号： C08K334

CPC分类号： B82Y30/00 ,  B60C1/00 ,  C01P2004/64 ,  C01P2006/12 ,  C08K9/04 ,  C08K9/06 ,  C09C1/3027 ,  C09C1/3054 ,  C09C1/3063 ,  C09C1/3081 ,  C09C1/309 ,  C09C3/006 ,  C09C3/08 ,  C09C3/12 ,  C08L21/00

摘要： This invention is a process for making modified silica filler comprising the steps of: (A) contacting an acidic aqueous suspension of precipitated or colloidal silica, optionally in the presence of a surfactant and/or a water-miscible solvent, with a combination of (a) a functionalizing coupling agent, and (b) an organometallic hydrophobing compound in a weight ratio of (a) to (b) of at least 0.001 to 1 to form an acidic aqueous suspension of chemically treated silica filler having a pH of 2.0 or less (B) treating the acidic aqueous suspension of the chemically treated filler with an acid-neutralizing agent to increase the pH of the suspension to a range of from greater than 2.0 to 10, and (C) recovering the chemically treated filler. This invention is also modified silica filler that has a pH of from about 5.0 to 10.0, where the silica filler is made by the method of this invention. This invention is also a curable silicone elastomer composition comprising a polyorganosiloxane, the modified silica filler produced by the method of this invention, and a means of curing the polyorganosiloxane into an elastomer.

摘要翻译： 本发明是一种制备改性二氧化硅填料的方法，其包括以下步骤：（A）任选在表面活性剂和/或水混溶性溶剂存在下，使沉淀或胶体二氧化硅的酸性水性悬浮液与（ a）官能化偶联剂，和（b）重量比为（a）至（b）的有机金属疏水化合物为至少0.001至1，以形成pH为2.0的化学处理二氧化硅填料的酸性水性悬浮液，或 （B）用酸中和剂处理化学处理的填料的酸性水性悬浮液以将悬浮液的pH值提高到大于2.0-10的范围，和（C）回收化学处理的填料。本发明 也是pH为约5.0至10.0的改性二氧化硅填料，其中二氧化硅填料通过本发明的方法制备。 本发明还是一种可固化的硅氧烷弹性体组合物，其包含聚有机硅氧烷，通过本发明的方法制备的改性二氧化硅填料，以及将聚有机硅氧烷固化成弹性体的方法。

公开(公告)号：US20080319125A1

公开(公告)日：2008-12-25

申请号：US12092717

申请日：2006-10-16

申请人： Lisa Marie Boswell ,  Michael Wolfgang Backer ,  Shawn Keith Mealey ,  Laurence Stelandre

发明人： Lisa Marie Boswell ,  Michael Wolfgang Backer ,  Shawn Keith Mealey ,  Laurence Stelandre

IPC分类号： C07F7/08 ,  C07F7/18

CPC分类号： C07F7/1804

摘要： A sulfidosilane of the formula wherein each R, which may be the same or different, represents an alkyl or aryl group having 1 to 18 carbon atoms, R′ represents an alkyl, hydroxyalkyl, or alkoxyalkyl group having 1 to 8 carbon atoms, each A independently represents the same or different divalent organic group having 1 to 18 carbon atoms and x has a value in the range 2 to 10 . . . .A coupling agent composition comprising sulfidosilanes of the formula Y′Y2Si-A-Sx-A-SiY2Y′ wherein each Y is selected from alkyl or aryl groups having 1 to 18 carbon atoms and alkoxy groups having 1 to 8 carbon atoms, each Y′ is selected from hydroxyl or alkoxy, hydroxyalkoxy, or alkoxyalkoxy groups having 1 to 8 carbon atoms, each A independently represents the same or different divalent organic group having 1 to 18 carbon atoms and x has an average value in the range 2 to 5 characterized in that the average number of alkoxy groups per sulfidosilane molecule is less than 2 and at least 0.1% by weight of the sulfidosilane in the compositionA process for the preparation of a coupling agent composition comprising sulphidosilanes of the formula Y′R2Si-A-Sx-A-SiR2Y′ wherein each R is selected from alkyl or aryl groups having 1 to 18 carbon atoms, each Y′ is selected from hydroxyl and alkoxy, hydroxyalkoxy, or alkoxyalkoxy groups having 1 to 8 carbon atoms, each A independently represents the same or different divalent organic group having 1 to 18 carbon atoms and x has an average value in the range 2 to 5, by reacting an aqueous phase comprising a sulfide compound, which is a polysulfide of the formula M2Sx and/or a mixture of sulfur with a hydrosulfide of the formula MHS or a sulfide of the formula M2Sn, where M represents ammonium or an alkali metal, x is defined as above and n has an average value of 1 to 5, with an alkoxydialkyhaloalkylsilane of the formula (R′O)R2Si-A-Z, where R and A are defined as above, R′ represents an alkyl, hydroxyalkyl, or alkoxyalkyl group having 1 to 8 carbon atoms and Z represents a halogen selected from chlorine, bromine and iodine, in the presence of a phase transfer catalyst under conditions such that some partial hydrolysis of alkoxysilane groups takes place to produce a coupling agent product containing a sulfidosilane

公开(公告)号：US06811823B2

公开(公告)日：2004-11-02

申请号：US10355752

申请日：2003-01-31

申请人： Lisa Marie Boswell ,  Csilla Kollar ,  Anthony Revis ,  Anil Kumar Tomar

发明人： Lisa Marie Boswell ,  Csilla Kollar ,  Anthony Revis ,  Anil Kumar Tomar

IPC分类号： B05D302

CPC分类号： C09C1/3081 ,  C01P2006/90

摘要： Silica surfaces are contacted with compositions containing organosilicon compounds to prepare modified silica fillers. The compositions contain only organosilicon compounds which are monomeric dichlorosilanes and trialkoxysilanes. The treating compositions may be (i) mixtures or blends of dialkyldichlorosilanes, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces, or (ii) mixtures or blends of substituted dialkyldichlorosilanes in which the substituted dialkyldichlorosilanes are free of hydrocarbon or organofunctional groups reactive with silica surfaces, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces. These mixtures and blends contain dialkyldichlorosilanes and trialkoxysilanes in a weight ratio of 1:0.1 to 1:2, respectively.

公开(公告)号：US06680398B1

公开(公告)日：2004-01-20

申请号：US10219080

申请日：2002-08-16

申请人： Lisa Marie Boswell ,  William Charles Maki ,  Anil Kumar Tomar

发明人： Lisa Marie Boswell ,  William Charles Maki ,  Anil Kumar Tomar

IPC分类号： C07F708

CPC分类号： C07F7/1892

摘要： In a first embodiment of a process for making mercaptoalkylalkoxysilanes, a pH adjusting agent and a sulfide containing compound are mixed in an aqueous phase to provide a pH of 4-9, a phase transfer catalyst is added to the aqueous phase, a haloalkylalkoxysilane is then added to the aqueous phase to form a reaction mixture containing mercaptoalkylalkoxysilanes and water soluble byproducts, and the desired mercaptoalklyalkoxysilanes are separated from the water soluble byproducts. In an alternate embodiment, the haloalkylalkoxysilane, the phase transfer catalyst, and an anhydrous pH adjusting agent such as sulfur dioxide, carbon dioxide, hydrogen sulfide, phosphoric acid, boric acid, and hydrochloric acid, are mixed, then an aqueous solution of a sulfide containing compound is added to form a reaction mixture containing mercaptoalkylalkoxysilanes and water soluble byproducts, and desired mercaptoalklyalkoxysilanes are separated from water soluble byproducts.

摘要翻译： 在制备巯基烷基烷氧基硅烷的方法的第一个实施方案中，将pH调节剂和含硫化物的化合物在水相中混合以提供4-9的pH，将相转移催化剂加入到水相中，然后将卤代烷基烷氧基硅烷 加入到水相中以形成含有巯基烷基烷氧基硅烷和水溶性副产物的反应混合物，并将所需的巯基烷基烷氧基硅烷与水溶性副产物分离。 在另一个实施方案中，将卤代烷基烷氧基硅烷，相转移催化剂和无水pH调节剂如二氧化硫，二氧化碳，硫化氢，磷酸，硼酸和盐酸混合，然后加入硫化氢水溶液 加入含有巯基烷基烷氧基硅烷和水溶性副产物的反应混合物，并将所需的巯基烷氧基硅烷与水溶性副产物分离。