发明名称 |
Manufacture of moisture curable organosiloxane compositions |
摘要 |
The specification is concerned with a process and apparatus for continuous manufacture of moisture curable silicone compositions. The procedure involves continuously introducing to the first mixing zone of a screw-extruder device the ingredients of a moisture curable organosiloxane composition containing a silanol-terminated polyorganosiloxane containing an least two silanol groups per molecule, a curing agent consisting of at least one silane containing at least 3 alkoxy groups per molecule, and a catalyst for the curing reaction which takes place in presence of moisture, subjecting the ingredients to the mixing and transporting action of the screw of the screw-extruder device for a period of time to effect mixing to homogeneity of the ingredients in the mixture, passing the mixture through a residence zone in which the mixture is not subjected to the mixing action of the screw of the screw-extruder device and in which residence zone the mixture is permitted to react for a period of time and transporting the composition through a second mixing zone from which volatile materials are exhausted from the mixture and extruding the mixture into storage containers.
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申请公布号 |
US5227111(A) |
申请公布日期 |
1993.07.13 |
申请号 |
US19920823394 |
申请日期 |
1992.01.21 |
申请人 |
DOW CORNING, S.A. |
发明人 |
BRANGERS, GEORGE D.;MESA-FORERO, CARLOS;ULZHEIMER, RUDI;WINTER, CHARLES B. |
分类号 |
B29C47/76;C08L83/04 |
主分类号 |
B29C47/76 |
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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