Process for making a silylisocyanurate
US5218133A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Aug 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/1804
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention provides a process for making a silylorganocarbamate or a silylisocyanurate which process comprises reacting an aminosilane with a dialkyl carbonate, diaryl carbonate or a mixture thereof in the presence of a basic catalyst to obtain the silylorganocarbamate; optionally, neutralizing the basic catalyst and residual aminosilane with a neutralizing agent; and adding a cracking catalyst and heating at subatmospheric pressure to obtain the silylisocyanurate; or heating a silylorganocarbamate at a temperature sufficient for dissociation of the carbamate at subatmospheric pressure in the presence of a cracking catalyst and a timerization catalyst to obtain a silylisocyanurate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.