Carbodiimide-isocyanurate foams modified with ethoxylated polyols
US4051082A · kind A · utility
6Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Feb 2, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2115/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Rigid cellular foams are prepared by catalytically condensing an organic polyisocyanate in the presence of (a) a carbodiimide-promoting catalyst, (b) a trimerization catalyst, (c) a urethane catalyst, and (d) from 10 parts to 40 parts per 100 parts of polyisocyanate of a polyol mixture comprising (1) from 5 parts to 30 parts of a polyoxyethylated polyhydric alcohol and (2) from 5 parts to 25 parts of a polyoxyethylated phosphate polyol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.