Highly branched polyether polyols of high molecular weight
US4061684A · kind A · utility
15Cited by
1References
5Claims
0Family size
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Key dates
| Filing date | Oct 29, 1976 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Oct 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/3344
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Highly branched polyether polyols of high molecular weight (such as over 12,000) are made by coupling an alkoxylated polyglycerol, by reaction of the sodium alcoholate of the oxyalkylated polyglycerol with a dibenzenesulfo or ditoluenesulfo ester of a diol containing 2 to 6 carbon atoms. Products obtained are viscous resinous products which are particularly suitable for use as hydrophilic water-swellable gels and other purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.