Polyol polyester purification
US5318790A · kind A · utility
8Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H13/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyol polyesters are purified by a process comprising bleaching with a specific silica gel and/or heat treatment and removal of volatile products by steam deodorization. Any steam deodorization is at reduced temperatures or in admixture with triglycerides to minimize thermal degradation of the polyol polyesters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.