Self-compatibilizing polyester polyol blends based on polyalkylene terephthalate
US4608432A · kind A · utility
22Cited by
13References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1985 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Sep 23, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2115/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Terephthalate polyester polyol blends comprising reaction products of a combination of polyethylene terephthalate, a polybasic carboxylic acid compound, a low molecular weight diol compound and a compatibilizer compound are compatible with fluorocarbon blowing agents. These polyol blends are produced by a simple heating process and are thereafter blendable with various conventional polyols and other additives to make resin prepolymer blends which can be catalytically reacted with organic isocyanates to produce cellular polyurethanes and polyurethane/polyisocyanurates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.