发明名称 |
Extrudable curable organosiloxane compositions exhibiting reduced compression set. |
摘要 |
Cured organosiloxane elastomers exhibiting compression set values of 25% or less with no adverse affect on other physical properties are prepared from organosiloxane compositions curable by a platinum-catalyzed hydrosilation reaction and containing a reinforcing silica filler that has been treated with at least one organosilicon compound that is a hexaorganodisilazane wherein two of the silicon-bonded hydrocarbon radicals are alkenyl. The hexaorganodisilazane constitutes from 1 to 4.6 weight percent of the organosilicon compounds used to treat the silica filler and the molar ratio of silicon-bonded hydrogen atoms to alkenyl radicals in the curable composition is from 0.8 to 2.0, preferably from 1 to 1.5.
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申请公布号 |
EP0489518(A1) |
申请公布日期 |
1992.06.10 |
申请号 |
EP19910310748 |
申请日期 |
1991.11.21 |
申请人 |
DOW CORNING CORPORATION |
发明人 |
GRAY, THOMAS EDWARD;JENSEN, JARY DAVID |
分类号 |
C08L83/07;C08K9/06;C08L83/04 |
主分类号 |
C08L83/07 |
代理机构 |
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