Process for the manufacture of aromatic isocyanates
US4332739A · kind A · utility
2Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1980 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | Nov 3, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C263/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for the manufacture in the liquid phase of aromatic isocyanates by the reaction of aromatic nitro compounds with carbon monoxide in the presence of a catalyst comprising a zeolite containing at least one active metal selected from Group VIII or I.sub.B of the Periodic Table of the Elements in the form of a cation or of a metallic crystallite in the zeolite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.