Antioxidants containing phenol groups and aromatic amine groups
US6028131A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1998 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Apr 27, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K15/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to compounds of the formula I ##STR1## in which R is C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.8 cycloalkyl, C.sub.7 -C.sub.9 phenylalkyl, --CH.sub.2 --A--R.sub.2 or a group of the formula II, ##STR2## R.sub.1 is C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.8 cycloalkyl, C.sub.7 -C.sub.9 phenylalkyl or a group of the formula (II), PA0 R.sub.2 is C.sub.4 -C.sub.18 alkyl, --(CH.sub.2).sub.m --COOR.sub.5 or a group of the formula III, ##STR3## R.sub.3 is hydrogen, C.sub.5 -C.sub.8 cycloalkyl or C.sub.1 -C.sub.12 alkyl, PA0 R.sub.4 is C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.8 cycloalkyl, C.sub.7 -C.sub.9 phenylalkyl or a group of the formula II or IV, ##STR4## A is S or SO, E is a direct bond, --CH.sub.2 --, --CH.sub.2 --O-- or --CH.sub.2 --NH--, PA0 G is --O-- or --NR.sub.3 --, PA0 Y is C.sub.1 -C.sub.18 alkyl, cyclohexyl, phenyl or alpha- or beta-naphthyl, PA0 R.sub.5 is C.sub.1 -C.sub.18 alkyl, and PA0 m is 1 or 2, PA0 with the provisos that PA0 either at least one of the radicals R and R.sub.4 conforms to a group of the formula II PA0 or R is CH.sub.2 --A--R.sub.2 and R.sub.4 is a group of the formula IV. The compounds are suitable for stabilizing organic material, i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.