发明名称 |
METHOD OF MAKING SILETHYNYL POLYMERS |
摘要 |
A method of making silethynyl polymers having units of the general formula -(R2SiC?C)- wherein each R independently denotes a hydrogen atom, an alkyl, aryl or alkenyl group or a substituted alkyl, aryl or alkenyl group having up to 18 carbon atoms comprises adding a lithium salt of one or more diethynylsilanes of the general formula R2Si(C?CH)2 to one or more dihalosilanes of the general formula R2SiX2 where X is a halogen atom and allowing the components to react. Copolymers with alternating units can be made. Linear polymers are made preferentially. Limiting the use of solvent increases the percentage of linear polymers produced.
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申请公布号 |
CA2033575(A1) |
申请公布日期 |
1991.07.09 |
申请号 |
CA19912033575 |
申请日期 |
1991.01.03 |
申请人 |
DOW CORNING LIMITED |
发明人 |
BORTOLIN, ROBERTO;BROWN, SCOTT S. D.;PARBHOO, BHUKANDAS |
分类号 |
C08G77/48;C08G77/60;(IPC1-7):C08G77/60 |
主分类号 |
C08G77/48 |
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