Polyols from phthalic compounds
US4902816A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Mar 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C69/80
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyols containing polyether and polyester moieties, based on phthalic acid are described. A phthalic acid derivative is reacted with a polyether polyol to give the novel polyols which are useful not only in polyisocyanurate foams, but also polyurethane foams as well. The phthalic acid derivative may be phthalic acid, phthalic anhydride and an ester of phthalic acid, for example. The polyester polyol is made from an initiator selected from the group consisting of alkanolamines, alkyleneamines, arylamines, sucrose, glycerin, sorbitol, .alpha.-methylglucoside, .beta.-methylglucoside, and mixtures thereof. The polyester polyol may be made by alkoxylating the initiators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.