3,5-Dialkyl-4-hydroxyphenylalkanoic acid esters of polyalkylene glycols
US4032562A · kind A · utility
17Cited by
2References
4Claims
0Family size
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Key dates
| Filing date | Oct 24, 1975 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Oct 24, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Esters of polyalkyleneglycols with 3,5-dialkyl-4-hydroxyphenylalkanoic acids were prepared by simple esterification techniques. An example of such compounds is methoxytriethyleneglycol 3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propionate. These compounds are useful as stabilizers of organic substrates subject to oxidative and thermal degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.