Invention Grant
US08420748B2 Process for preparing branched Si-H functional polysiloxanes and use thereof for preparing liquid SiC- or SiOC-linked, branched modified organomodified polysiloxanes
有权
制备支链Si-H官能聚硅氧烷的方法及其制备液态SiC-或SiOC-连接的支化改性有机改性聚硅氧烷的用途
- Patent Title: Process for preparing branched Si-H functional polysiloxanes and use thereof for preparing liquid SiC- or SiOC-linked, branched modified organomodified polysiloxanes
- Patent Title (中): 制备支链Si-H官能聚硅氧烷的方法及其制备液态SiC-或SiOC-连接的支化改性有机改性聚硅氧烷的用途
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Application No.: US13288539Application Date: 2011-11-03
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Publication No.: US08420748B2Publication Date: 2013-04-16
- Inventor: Frauke Henning , Wilfried Knott , Michael Ferenz
- Applicant: Frauke Henning , Wilfried Knott , Michael Ferenz
- Applicant Address: DE Essen
- Assignee: Evonik Goldschmidt GmbH
- Current Assignee: Evonik Goldschmidt GmbH
- Current Assignee Address: DE Essen
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Priority: DE102008041601 20080827
- Main IPC: C08G77/08
- IPC: C08G77/08 ; C08G77/04 ; C08G77/06 ; C08G77/12 ; C08F283/00
Abstract:
The invention provides a process for preparing liquid, branched SiH-functional siloxanes by reacting a mixture of one or more low molecular weight SiH-functional siloxanes, one or more low molecular weight SiH-free siloxanes, one or more tetraalkoxysilanes, and optionally one or more trialkoxysilanes with addition of water and in the presence of a Brønsted-acidic ion exchanger, which is characterized in that the reaction is performed in one process step.
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