Polyethercyclipolyols from epihalohydrins, polyhydric alcohols, and metal hydroxides or epoxy alcohols and optionally polyhydric alcohols with thermal condensation
US5428178A · kind A · utility
22Cited by
16References
2Claims
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Key dates
| Filing date | Apr 7, 1994 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Apr 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D319/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Method for preparing polyethercyclicpolyol by heating alkali and/or alkaline earth hydroxide optionally with polyol, its precursors or derivatives, admixing epoxy alcohol or epihalohydrin therewith to initiate an addition reaction, and thermally condensing the product of the addition reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.