Novel 2-(2-hydroxyphenyl)-benzotriazole derivatives, substituted by branched long chain alkyl groups containing ester moieties
US4996326A · kind A · utility
13Cited by
7References
4Claims
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Key dates
| Filing date | Jan 12, 1990 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jan 12, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3475
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Benzotriazoles of the formula I ##STR1## in which R.sup.1 and R.sup.2 are located in the ortho-position or para-position relative to the OH group and at least one of these substituents in an .alpha.-branched alkyl group containing a polar group M in the .omega.-position are liquid or low-melting compounds which absorb UV light and can be used as stabilizers for organic materials. M can be, for example, an ester or amide group. R.sup.3 can be H, Cl, alkyl, alkoxy or a carboxyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.