Flexible polyurethane foams prepared from cotrimers of alkylene-bridged polyphenylene polyisocyanates
US4552903A · kind A · utility
5Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1984 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Dec 24, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/791
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Flexible polyurethane foams having improved flame resistance and "guide factor" are prepared by reacting a copolymer polyahl, isocyanate-terminated prepolymer containing a cotrimer of MDI and a blowing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.