Bis-quaternary ammonium salts as polyisocyanurate catalysts
US4186255A · kind A · utility
23Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1978 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Mar 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Covers the use of quaternary ammonium carboxylate salts as polyisocyanurate catalysts. Said catalysts are useful in promoting the reaction between a polyol and an aromatic polyisocyanate to prepare a polymer containing recurring isocyanurate and urethane linkages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.