Process for the preparation of carbodiimide-isocyanurate foams
US4166164A · kind A · utility
18Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1977 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Dec 5, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/903
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Rigid foams characterized by carbodiimide and isocyanurate linkages are prepared by catalytically condensing an organic polyisocyanate in the presence of (a) a carbodiimide-promoting compound and (b) certain C.sub.1 -C.sub.8 alkali metal carboxylates as trimerization catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.