公开(公告)号：US4585848A

公开(公告)日：1986-04-29

申请号：US443545

申请日：1982-11-22

申请人： Edwin R. Evans ,  Makoto Matsumoto

发明人： Edwin R. Evans ,  Makoto Matsumoto

IPC分类号： C08G77/24 ,  C08L83/05 ,  C08L83/08 ,  C08G77/06

CPC分类号： C08G77/24 ,  C08L83/08

摘要： High strength solvent resistant rubber compositions comprise a vinyl terminated fluorosilicone copolymer gum having a controlled, low amount of backbone vinyl unsaturation, a conventional platinum curing agent, and a crosslinker containing a least two Si-H bonds.

摘要翻译： 高强度耐溶剂橡胶组合物包括具有受控的少量骨架乙烯基不饱和键的乙烯基封端氟硅酮共聚物胶，常规铂固化剂和含有至少两个Si-H键的交联剂。

公开(公告)号：US4331733A

公开(公告)日：1982-05-25

申请号：US214915

申请日：1980-12-10

申请人： Edwin R. Evans ,  Jerry D. Florence

发明人： Edwin R. Evans ,  Jerry D. Florence

IPC分类号： C08F2/00 ,  H01B7/295 ,  B32B15/08

CPC分类号： H01B7/295 ,  Y10T428/294 ,  Y10T428/2962

摘要： Curable polymeric compositions comprising copolymers of alpha-substituted polyolefins and silarylenesiloxane-polydiorganosiloxane block copolymers which exhibit increased resistance to flow and dripping at flame temperatures. The compositions are made by blending the polyolefin with a silphenylene and optionally a filler and can be used when cured as flame-retardant insulation for wire and cable and for molded products and the like.

摘要翻译： 包含α-取代的聚烯烃和聚甲基硅氧烷 - 聚二有机硅氧烷嵌段共聚物的共聚物的可固化的聚合物组合物，其在火焰温度下表现出增加的流动阻力和滴落性。 所述组合物是通过将聚烯烃与硅亚苯基和任选的填料共混来制备的，并且当固化为线缆和模制产品等的阻燃绝缘体时可以使用。

公开(公告)号：US4329528A

公开(公告)日：1982-05-11

申请号：US211961

申请日：1980-12-01

申请人： Edwin R. Evans

发明人： Edwin R. Evans

IPC分类号： B01D19/04 ,  C10L1/28 ,  C07C7/20 ,  B01B1/04

CPC分类号： C10L1/285 ,  B01D19/0409

摘要： A method of defoaming crude hydrocarbon stocks comprising adding to the hydrocarbon stock at least 1 part per million of a fluorosilicone copolymer having from 20 to 70 mole percent of fluorosilicone siloxy units.

摘要翻译： 一种消除粗烃原料的方法，包括向烃原料中加入至少1ppm的具有20至70摩尔百分数的氟硅氧烷单元的氟硅氧烷共聚物。

公开(公告)号：US4157337A

公开(公告)日：1979-06-05

申请号：US813250

申请日：1977-07-06

申请人： Edwin R. Evans

发明人： Edwin R. Evans

IPC分类号： C08G77/00 ,  C08G77/06 ,  C08G77/08 ,  C08G77/22 ,  C08G77/24 ,  C07F7/08

CPC分类号： C08G77/08 ,  C08G77/24

摘要： Diorganopolysiloxane homo- and copolymers having a viscosity from 50 to 200,000,000 centipoise at 25.degree. C., are produced by (A) reacting a composition of (i) a first cyclic siloxane having 3 to 6 units alone or admixed with (ii) a second cyclic tetrasiloxane having 3 to 6 units, (i) being present in an amount of 30 to 100 mol % of the composition, at a temperature in the range of 90.degree. to 150.degree. C. and in the presence of 5 to 500, preferably 5 to 50 parts per million, as KOH, of a catalyst comprising (a) KOH complexed with a molar equivalent of a cyclic polyesther, or (b) a silanolate of KOH complexed with a molar equivalent of a cyclic polyether and (B) neutralizing the catalyst in the reaction mixture after equilibrium has been reached. Especially useful products of the process are homopolymers and copolymers including siloxane chain units of the formula R R.sup.1 SiO wherein R.sup.1 is alkyl, halogenated alkyl or cycloalkyl, and preferably, perfluoroalkyl, and R is the same as R.sup.1 and, in addition, methyl, ethyl, vinyl or phenyl.

摘要翻译： 通过（A）使（i）单独具有3至6个单元的第一环状硅氧烷或与（ii）第二种（ii）的单体混合的第一环状硅氧烷的组合物来制备在25℃下具有50至200,000,000厘泊粘度的二羟基聚硅氧烷均聚物和共聚物， 具有3〜6个单元的环状四硅氧烷，（i）以组合物的30〜100摩尔％的量存在下，在90〜150℃的温度下，优选5〜500的范围 作为KOH的催化剂为5〜50ppm，催化剂为（a）与摩尔当量的环状聚硅氧烷配合的KOH，或（b）与摩尔当量的环状聚醚配合的KOH的硅烷醇化物，（B）中和 平衡后反应混合物中的催化剂已达到。 该方法的特别有用的产物是包括式R 1 R 1 SiO的硅氧烷链单元的均聚物和共聚物，其中R 1是烷基，卤代烷基或环烷基，优选全氟烷基，R与R 1相同，此外，甲基，乙基 ，乙烯基或苯基。