Process for preparing rigid polyurethane foams
US4704411A · kind A · utility
22Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1986 |
| Grant date | Nov 3, 1987 |
| Priority date | — |
| Expiry date | Jun 30, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/3293
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention is directed to a process by preparing a rigid polyurethane foam which comprise reacting a polyisocyanate with a polyol in the presence of a blowing agent, a polymerization catalyst and a surfactant. The polyol has the formula ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.