2H-benzotriazole UV absorbers substituted with 1,1-diphenylalkyl groups and compositions stabilized therewith
US6489383B1 · kind B1 · utility
5Cited by
4References
37Claims
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Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Feb 7, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3475
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2H-Benzotriazole UV absorbers substituted at the 3-position or at the 5-position of the phenyl ring by a 1,1-diphenylalkyl moiety, particularly a 1,1-diphenylethyl group, are particularly photostable in automotive coatings, and are of low color and exhibit low volatility in thermoplastic compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.