Polymer polyol dispersions, a process for making them and polyurethane foams prepared using such polyol dispersions
US5244932A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1989 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Sep 8, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The dispersion of a polymer in a polyol is characterized in that the polymer is a product of PA1 A) a reaction product of an epoxy compound and an aromatic acid and PA1 B) an epoxy hardener PA1 and the epoxy compound is the reaction product of a polyphenol an epihalohydrin, of a polyalcohol and an epihalohydrin, of an amine and an epihalohydrin, of a sulfur-containing compound and an epihalohydrin, of a polycarboxylic acid and an epihalohydrin or of a polyisocyanate and 2,3-epoxy-1-propanol or the reaction product of a mixture or polyphenols, polyalcohols, amines, sulfur-containing compounds, polycarbolic acids and/or polyisocyanates and an epihalohydrin. The dispersion is useful for producing polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.