2H-benzotriazole UV absorders substituted with 1,1-diphenylalkyl groups and compositions stabilized therewith
US6392056B1 · kind B1 · utility
3Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Aug 3, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Aug 3, 2020 |
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.