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公开(公告)号：US06271299B1
公开(公告)日：2001-08-07
申请号：US09244226
申请日：1999-02-02
IPC分类号： C08J334
CPC分类号： C08K3/34 , C08G77/045 , C08G77/12 , C08G77/16 , C08G77/18 , C08G77/20 , C08G77/24 , C08G77/70 , C08G77/80 , C08L83/04 , C09D183/04 , C08L2666/44 , C08L2666/54 , C08L83/00
摘要： Curable liquid silicone rubber compositions that are curable to form silicone elastomers which are useable as fire resistant sealants. These compositions have low heat release and form hard chars on burning, and comprise: (A) a liquid polyorganosiloxane polymer described by the formula where each R1 is independently selected from the group consisting of alkyl, alkenyl, aryl, and halogenated alkyl groups having from 1 to 18 carbon atoms, each R2 is independently selected from the group consisting of hydroxyl, alkoxy, alkenyl, and alkynyl groups, and x is an integer having a value of from about 10 to 1500, (B) a cross-linking organosilicon compound having at least 3 silicon-bonded reactive groups, (C) a catalyst capable of promoting the reaction between the silicon-bonded R2 groups of Component A and the silicon-bonded reactive group of Component B, (D) wollastonite, and (E) an optional reinforcing filler.
摘要翻译： 可固化以形成可用作耐火密封剂的硅氧烷弹性体的可固化液体硅橡胶组合物。 这些组合物具有低的热释放并在燃烧时形成硬焦炭，并且包括：（A）由下式描述的液体聚有机硅氧烷聚合物，其中每个R 1独立地选自烷基，烯基，芳基和卤代烷基， 1至18个碳原子，每个R 2独立地选自羟基，烷氧基，烯基和炔基，x是值为约10至1500的整数，（B）交联有机硅化合物 具有至少3个硅键合的反应性基团，（C）能够促进组分A的硅键合的R 2基团与组分B的硅键合的反应性基团（D）硅灰石之间的反应的催化剂，和（E） 一种可选的增强填料。
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公开(公告)号：US6084002A
公开(公告)日：2000-07-04
申请号：US241942
申请日：1999-02-02
IPC分类号： C08J9/02 , C08J9/00 , C08K3/34 , C08K5/00 , C08K5/05 , C08K5/5419 , C08L83/04 , C08L83/05 , C08L83/06 , C08L83/07
CPC分类号： C08J9/0066 , C08K3/34 , C08J2383/04 , Y10S521/907
摘要： A cured silicone foam exhibiting high flame resistance and forming hard chars on burning, contains from about 1 to 60 percent by weight of wollastonite mineral, based on the weight of the composition. The silicone foam can be formed from any of the curable polyorganosiloxane foam-forming compositions known in the art. Preferred are those polyorganosiloxane foams cured using a platinum group metal catalyst. In a preferred composition the silicone foam is formed by curing a composition comprising a liquid polyorganosiloxane containing an average of at least two alkenyl radicals per molecule, an organohydrogensiloxane containing at least three silicon-bonded hydrogen atoms per molecule, a hydroxyl-containing compound, wollastonite, and a platinum catalyst.
摘要翻译： 基于组合物的重量，表现出高阻燃性并在燃烧时形成硬炭的固化的硅氧烷泡沫含有约1至60重量％的硅灰石矿物。 硅氧烷泡沫可以由本领域已知的任何可固化的聚有机硅氧烷泡沫形成组合物形成。 优选使用铂族金属催化剂固化的那些聚有机硅氧烷泡沫。 在优选的组合物中，硅氧烷泡沫体通过固化包含每分子平均含有至少两个烯基的液体聚有机硅氧烷，每分子含有至少三个与硅键合的氢原子的有机氢硅氧烷，含羟基化合物，硅灰石 ，和铂催化剂。
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公开(公告)号：US06239378B1
公开(公告)日：2001-05-29
申请号：US09241474
申请日：1999-02-02
IPC分类号： C08K710
CPC分类号： C09K21/14 , C08G77/20 , C08K3/34 , C08K3/36 , C08L83/04 , G02B6/4436 , C08L2666/54
摘要： A curable silicone wire and cable coating composition with improved flame resistance at heat flux rates of 50 to 90 kW/m2, made by mixing ingredients comprises: (A) 30 to 90 weight percent of a heat-curable non-halogenated organosiloxane polymer, containing at least 2 alkenyl groups per molecule, (B) 1 to 65 weight percent of a reinforcing silica filler, based on the total composition, (C) 5 to 70 weight percent wollastonite having an average particle size of 2 to 30 &mgr;m, based on the total composition, and (D) curing component sufficient to cure the composition.
摘要翻译： 通过混合成分制备的热通量为50〜90kW / m 2的阻燃性可固化的硅氧烷线电缆涂料组合物包括：（A）30-90重量％的可热固化的非卤化有机硅氧烷聚合物，其含有 每分子至少2个烯基，（B）1至65重量％的增强二氧化硅填料，基于总组合，（C）5至70重量％的平均粒度为2至30μm的硅灰石，基于 总组合物和（D）固化组分足以固化组合物。
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公开(公告)号：US06433049B1
公开(公告)日：2002-08-13
申请号：US09880480
申请日：2001-06-13
IPC分类号： C08K524
CPC分类号： C08L23/0815 , C08G77/12 , C08G77/20 , C08L23/02 , C08L83/04 , C08L2201/02 , C08L83/00 , C08L2666/02 , C08L2666/54
摘要： A composition comprising a polyolefin, a polyorganosiloxane having at least two alkenyl groups per molecule, and calcium silicate where the polyorganosiloxane is cured after mixing using an organohydrido silicon compound and a hydrosilation catalyst to create a thermoplastic vulcanizate, provides excellent fire resistance. In particular such compositions when tested by burning at 40 to 88 kW/m2 external flux generate significantly less heat and smoke, and generate tougher chars compared to polyolefins alone, or mixtures of thermoplastic polyolefin resin, polyorganosiloxane and calcium silicate where the composition is not cured after mixing.
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公开(公告)号：US06239243B1
公开(公告)日：2001-05-29
申请号：US09329384
申请日：1999-06-10
IPC分类号： C01B3314
CPC分类号： C01B33/16 , Y10T428/2995
摘要： A method for the preparation of hydrophilic silica gels with high pore volume. In the preferred method a hydrophilic silica hydrogel treated with an organosilicon compound to effect hydrophobing of the silica hydrogel is heated in the presence of an oxidizing atmosphere to a temperature sufficient to reduce the hydrophobicity imparted by the surface treatment thereby producing a hydrophilic silica gel having high pore volume.
摘要翻译： 一种制备高孔体积的亲水硅胶的方法。 在优选的方法中，用有机硅化合物处理以实现二氧化硅水凝胶的疏水化的亲水性二氧化硅水凝胶在氧化气氛的存在下加热到足以降低由表面处理赋予的疏水性的温度，从而产生具有高的亲水性硅胶 孔体积。
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