Process for the preparation of carbodiimide-isocyanurate foams
US3981829A · kind A · utility
24Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1974 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Dec 30, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Rigid cellular foam compositions characterized by carbodiimide and isocyanurate linkages are prepared by catalytically condensing an organic polyisocyanate in the presence of a catalytically sufficient amount of a catalyst system comprising (a) an alkanolaminotriazine, (b) a hexahydrotriazine, and (c) phenol or a substituted phenol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.