发明名称 |
METHOD AND DEVICE FOR THE PREPARATION OF SILICONE ELASTOMER FOAM |
摘要 |
In accordance with the present method for preparing an elastomeric silicone foam, an inert gas is injected under superatmospheric pressure during or after the merging of a silanol-containing organopolysiloxane that is liquid at room temperature, an organohydrogenpolysiloxane that is liquid at room temperature, and a hydrosilation catalyst, and the merging step is followed by mechanical mixing in an enclosed chamber, at which time the mixture is ejected into the atmosphere. Completion of cure with simultaneous evolution of hydrogen occur under atmospheric pressure with the reactive ingredients and the inert gas all present in a homogeneously microdispersed/mixed state. The present method stabilizes the cells formed by the hydrogen and makes possible the development of a large quantity of cells of uniform size and uniform distribution, resulting in a high- expansion ratio foam.
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申请公布号 |
CA2074774(C) |
申请公布日期 |
1999.01.05 |
申请号 |
CA19922074774 |
申请日期 |
1992.07.28 |
申请人 |
DOW CORNING TORAY SILICONE COMPANY, LTD. |
发明人 |
SHINMI, HIDEO;SUTO, MANABU |
分类号 |
B29C67/20;B29C39/02;B29C39/22;B29K83/00;B29K105/04;C08J9/02;C08J9/12;C08L83/04;C08L83/05;C08L83/06;(IPC1-7):C08L83/06 |
主分类号 |
B29C67/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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