Process for the production of plastics by the polyisocyanate polyaddition process and catalysts suitable for this process
US5063252A · kind A · utility
2Cited by
1References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1989 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Nov 7, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/1883
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for the production of polyurethanes using catalysts based on triamino(imino)phosphoranes corresponding to formulas I, II or III ##STR1## wherein R, R', R" and R"' represent hydrocarbon substituents and PA0 n and m may be the same or different and represent 0, 1 or 2. The present invention also relates to certain of the triamino(imino)phosphoranes used as catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.