Preparation of cyanate esters
US4981994A · kind A · utility
11Cited by
17References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Jul 31, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C261/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A base-catalyzed process is provided for the preparation of cyanate esters, the process including the step of pre-reacting a phenolic starting material with the basic catalyst and then reacting the pre-reaction product with a cyanogen halide. The process permits the preparation of cyanate esters in high yields at reaction temperatures above room temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.