Modification of polyols with epoxy resins
US4316991A · kind A · utility
27Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1980 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Sep 2, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/914
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The modification of polyether polyols by their reaction with epoxy resin and alkylene oxides is described. The modified polyols of 2000 to 7000 molecular weight produce flexible polyurethane foams that have higher load bearing properties than foams made with nonmodified polyols. The ability of a modified polyol to make a higher load bearing foam is related to the position in the polyol chain the epoxy resin is added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.