Polyalkylene glycol esters of hindered phenols substituted alkanoic acid
US3944594A · kind A · utility
38Cited by
2References
11Claims
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Key dates
| Filing date | Nov 23, 1973 |
| Grant date | Mar 16, 1976 |
| Priority date | — |
| Expiry date | Nov 23, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula: ##EQU1## WHEREIN X is oxygen or sulfur, PA1 a is an integer from 2 to 6, PA1 b is an integer from 3 to 40, and PA1 R is ##SPC1## Wherein PA1 R.sub.1 is an alkyl group of 1 to 8 carbon atoms, PA1 R.sub.2 is hydrogen or an alkyl group of 1 to 8 carbon atoms, and PA1 X is an integer from 0 to 6 Are useful as antioxidants for organic materials normally subject to oxidative deterioration, such as polyacetals, polypropylene, and nylon, in amounts of from about 0.005 to about 5% by weight of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.