Method for producing isocyanate group-containing siloxane compound
US7576231B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2007 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Aug 1, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0889
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for producing an isocyanate group-containing siloxane compound is provided. In this method, a halogenated siloxane compound represented by the following general formula (1):or the following general formula (2)wherein R1, R2, R3, and R4 are independently hydrogen atom, a monovalent hydrocarbon group containing 1 to 8 carbon atoms, or a siloxy group represented by OSiR5R6R7 wherein R8, R6, and R7 are a monovalent hydrocarbon group containing 1 to 8 carbon atoms, X is a halogen atom, n is an integer of 1 to 10, a is 0, 1, or 2, and b is an integer of 2 to 9; is reacted with a cyanate salt represented by the following general formula (3):Mm+(OCN)m (3)wherein M represents an alkali metal or an alkaline earth metal, and m is 1 or 2. The isocyanate group-containing siloxane compound produced is represented by the following general formula (4):or the following general formula (5):wherein R1, R2, R3, R4, n, q, and a are as defined above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.