Polyurethane foam and process for its preparation
US4789690A · kind A · utility
23Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Mar 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane foam is the reaction product of at least one polyol and at least one polyisocyanate in the presence of at least one blowing agent. The polyol contains a polymer polyol dispersion prepared by reacting an epoxy resin with an epoxy hardener in the presence of a liquid polyol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.