Stable polyester polyol composition
US6461536B2 · kind B2 · utility
2Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Feb 5, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an oxyethylated fatty acid or fatty alcohol compatibilizing agent having an HLB of from about 7 to about 12. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.