Process for preparing organic isocyanates
US4193932A · kind A · utility
10Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1978 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Oct 27, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C263/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for preparing organic isocyanates is disclosed. An organic amine is reacted with phosgene to yield a reaction product, through which hydrogen chloride gas is passed in the presence of an inert organic solvent whereby the gas included in the reaction product is removed and the acid substances and hydrolyzable chlorine-containing substances included therein are minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.