US4011236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(benzimidazol-2-yl)arylcarboxamides as ultraviolet (uv) light absorbers
Assignee: Merck and Co Inc
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Filing: 1975-05-27
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Granted: 1977-03-08
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Expires: 1995-05-27
Abstract
Abstract This invention relates to compositions containing N-(benzimidazol-2-yl)arylcarboxamides as ultraviolet (UV) light absorbers. The compounds are useful to protect UV sensitive materials, particularly plastic compositions, or ingredients thereof such as dyes, anti-microbial agents, or plasticizers from attack by ultraviolet light. The compositions are suitable for those uses where UV protection is required only for short periods of time, for example in sun tan lotions, as well as for uses which require protection for extended periods of time.
Inventors
- 👤 Nathaniel Grier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:03
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/30; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08K5/3447; C09; C09K; C09K15/00; C09K15/04; C09K15/30; F; F21; F21V; F21V9/00; F21V9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A N-(benzimidazol-2-yl)arylcarboxamide having the formula: ##STR22## wherein R 1 is a phenyl group substituted at the 2-, 3- or 4-position by a member selected from the group consisting of methoxycarbonyl, ethoxycarbonyl, butoxycarbonyl, propoxycarbonyl, dodecyloxycarbonyl, carboxy, phenyl, nitro, and carboxamide and R 2 is a member selected from the group consisting of hydrogen, methyl, acetyl, methoxycarbonyl, butyryl, pivaloyl, stearoyl, acryl, toluyl, mesitoyl, butyl, octyl, benzoyl, halobenzoyl, and phenyl.
Claim 2
Dependent Claim
67 words
A N-(benzimidazol-2-yl)arylcarboxamide having the formula: ##STR22## wherein R 1 is a phenyl group substituted at the 2-, 3- or 4-position by a member selected from the group consisting of methoxycarbonyl, ethoxycarbonyl, butoxycarbonyl, propoxycarbonyl, dodecyloxycarbonyl, carboxy, phenyl, nitro, and carboxamide and R 2 is a member selected from the group consisting of hydrogen, methyl, acetyl, methoxycarbonyl, butyryl, pivaloyl, stearoyl, acryl, toluyl, mesitoyl, butyl, octyl, benzoyl, halobenzoyl, and phenyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |