Polyoxyalkylenes containing alkaline catalyst residues chelated with benzoic acid derivatives
US4426301A · kind A · utility
6Cited by
9References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 15, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Oct 15, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2969
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The oxidation promoting harmful effects of the presence of an alkaline catalyst in a polyoxyalkylene can be eliminated and the product made more resistant to oxidation especially at elevated temperatures by the incorporation therein of soluble salts of certain benzoic acid derivatives. The soluble salts can be formed by reaction with the alkali or alkaline earth metal ion derived from the alkaline catalyst utilized in the polymerization of the polyoxyalkylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.