Process for preparing carbodiimides utilizing a phosphonium salt catalyst
US4066629A · kind A · utility
6Cited by
12References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1976 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Oct 28, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process wherein certain phosphonium salt compounds, such as, n-butyltriphenylphosphonium bromide, are utilized as catalysts in the preparation of carbodiimides from organic-isocyanates under certain specified conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.