Polyester polymer polyols made with polyester polycarbonates and polyurethanes therefrom
US4435527A · kind A · utility
21Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1983 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | Jan 24, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/914
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester polymer polyol made by the reaction of a polyester polycarbonate, a polyether polyol and an organic polyisocyanate is described. The polyester polycarbonate may have a molecular weight of about 250 to 1,000. The polyether polyol may have a molecular weight of about 3,000 to 8,000. This polyester polymer polyol may be used in the manufacture of flexible polyurethane foams which are characterized by good load bearing properties as well as good water absorption and retention properties. Foams made from these polymer polyols show a lesser tendency to yellow than those made from prior art polyols and polymer polyols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.