Polyurethanes prepared from polyoxyalkylenes containing alkaline catalyst residues chelated with benzoic acid derivatives
US4468478A · kind A · utility
10Cited by
2References
8Claims
0Family size
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Key dates
| Filing date | Oct 14, 1983 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Oct 14, 2003 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2200/40
- 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.