3-(acyloxyphenyl)benzofuran-2-one stabilisers
US5488117A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1994 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Jul 26, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/83
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula (1) ##STR1## in which R.sub.2, R.sub.3, R.sub.4 and R.sub.5 independently of one another, are hydrogen, C.sub.1 -C.sub.25 alkyl, C.sub.7 -C.sub.9 phenylalkyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkyl; C.sub.1 -C.sub.18 alkoxy, hydroxyl, C.sub.1 -C.sub.25 alkanoyloxy, C.sub.3 -C.sub.25 alkenoyloxy, C.sub.3 -C.sub.25 alkanoyloxy which is interrupted by oxygen, sulfur or >N--R.sub.16 ; C.sub.6 -C.sub.9 cycloalkylcarbonyloxy, benzoyloxy or C.sub.1 -C.sub.12 alkyl-substituted benzoyloxy, where R.sub.16 is hydrogen or C.sub.1 -C.sub.8 alkyl, or, furthermore, the radicals R.sub.2 and R.sub.3 or the radicals R.sub.4 and R.sub.5 together with the carbon atoms to which they are bound form a phenyl ring, R.sub.4 is additionally --(CH.sub.2).sub.n --COR.sub.11, in which n is 0, 1 or 2, R.sub.11 is hydroxyl, ##STR2## R.sub.14 and R.sub.15, independently of one another, are hydrogen or C.sub.1 -C.sub.18 alkyl, M is an r-valent metal cation and r is 1, 2 or 3, R.sub.7, R.sub.8, R.sub.9 and R.sub.10, independently of one another, are hydrogen, C.sub.1 -C.sub.4 alkyl or C.sub.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.