Production of polyol polyesters having reduced color content
US4942228A · kind A · utility
12Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1986 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | May 6, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyol polyesters having reduced color content are prepared by base-catalyzed transesterification of pretreated lower (i.e., C.sub.1 -C.sub.3) alkyl fatty esters with polyols. The pretreatment comprises the steps of contacting the alkyl fatty esters (in a liquid state) with an alkoxide base, separating undissolved solids from the esters, and then distilling the esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.