Invention Grant
US5728794A Process for the production of poly(diorganosiloxanes) with
diorganyloxyorganylsilyl or triorganyloxysilyl end groups,
crosslinkable mixtures containing them and use thereof
失效
用二氧代氧基有机基甲硅烷基或三烷氧基甲硅烷基端基生产聚（二有机硅氧烷）的方法，含有它们的可交联混合物及其用途
- Patent Title: Process for the production of poly(diorganosiloxanes) with diorganyloxyorganylsilyl or triorganyloxysilyl end groups, crosslinkable mixtures containing them and use thereof
- Patent Title (中): 用二氧代氧基有机基甲硅烷基或三烷氧基甲硅烷基端基生产聚（二有机硅氧烷）的方法，含有它们的可交联混合物及其用途
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Application No.: US709950Application Date: 1996-09-09
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Publication No.: US5728794APublication Date: 1998-03-17
- Inventor: Robert Friebe , Karl-Heinz Sockel
- Applicant: Robert Friebe , Karl-Heinz Sockel
- Applicant Address: DEX Leverkusen
- Assignee: Bayer Aktiengesellschaft
- Current Assignee: Bayer Aktiengesellschaft
- Current Assignee Address: DEX Leverkusen
- Priority: DEX19533915.0 19950913
- Main IPC: C08G77/06
- IPC: C08G77/06 ; C08G77/08 ; C08G77/18 ; C08L83/04
Abstract:
In the production of a poly(diorganosiloxane) with diorganyloxyorganylsilyl or triorganyloxysilyl end groups wherein at least one .alpha.,.omega.-dihydroxypoly(diorganosiloxane) is reacted with at least one alkoxysilane in the presence of a catalyst, the improvement which comprises employing as the catalyst at least one phosphoric acid ester or salt thereof. The reaction proceeds rapidly and, when complete, the catalyst can easily be deactivated to prevent degradation and/or rearrangement.
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