- Patent Title: Method for hydrosilylation of aliphatically unsaturated alkoxysilanes and hydrogen terminated organosiloxane oligomers to prepare alkoxysilyl terminated polymers useful for functionalizing polyorganosiloxanes using a rhodium catalyst
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Application No.: US16617679Application Date: 2018-06-26
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Publication No.: US11098163B2Publication Date: 2021-08-24
- Inventor: John Gohndrone , Matthew Olsen , Xiaoyuan Zhou , William Johnson , Christine Marchand
- Applicant: Dow Silicones Corporation
- Applicant Address: US MI Midland
- Assignee: Dow Silicones Corporation
- Current Assignee: Dow Silicones Corporation
- Current Assignee Address: US MI Midland
- Agent Catherine U. Brown
- International Application: PCT/US2018/039377 WO 20180626
- International Announcement: WO2019/005710 WO 20190103
- Main IPC: C08G77/08
- IPC: C08G77/08 ; B01J31/24 ; C08G77/04 ; C08G77/38 ; C08G77/00 ; C08G77/50
Abstract:
A method for preparing a product includes combining starting materials including, A) a siloxane oligomer having silicon bonded hydrogen atoms, B) an alkoxysilane having at least one aliphatically unsaturated group capable of undergoing hydrosilylation reaction and C) a dirhodium complex catalyst. The method can be used to produce a compound of formula (Formula (F)). This compound can be used in a hydrosilylation reaction with a vinyl-functional polyorganosiloxane. The resulting product includes an ethyltrimethoxysilyl functional polyorganosiloxane useful in condensation reaction curable sealant compositions.
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