US4490542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,4-Diketo-pyrrolo[3,4-c]pyrroles
Assignee: BASF Corp
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Filing: 1983-08-01
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Granted: 1984-12-25
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Expires: 2003-08-01
Abstract
Abstract A process for dyeing high-molecular organic material in the bulk characterized by the use of a 1,4-diketo-pyrrole[3,4-c]-pyrrol of the formula ##STR1## wherein R 1 and R 2 are isocyclic or heterocyclic aromatic radicals, preferably unsubstituted or substituted phenyl or naphthyl radicals. The dyeings obtained, for example in plastics, fibres, lacquers and printings, are distinguished by very high coloring strength, high saturation, good dispersibility, good fastness to cross-lacquering, migration, heat, light and weather, and also by a high gloss and a good IR-remission behavior.
Inventors
- 👤 Abul Iqbal
- 👤 Luigi Cassar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:34
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C09; C09B; C09B57/00; C09B57/004
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
49 words
A compound of the formula ##STR15## wherein R 3 and R 4 are the same and each is 1-naphthyl, 2-napthyl, 4-chlorophenyl, 3-chlorophenyl, 4-methylphenyl, 4-cyanophenyl, 4-dimethylaminophenyl, 3-methylphenyl, 4-bromophenyl, 3-trifluoromethylphenyl, 4-benzoylaminophenyl, 4-tert-butylphenyl, 3,4-dimethylphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3,4-dimethoxyphenyl, 4-methylsulfonylphenyl, 3-chloro-4-methylphenyl, 4-methoxyphenyl, 4-acetoxyphenyl, 4-acetylaminophenyl, 3-cyanophenyl, 3-bromophenyl, 4-(p-butylbenzoyloxy)phenyl, 3,5-dichlorophenyl, 3,5-dimethoxyphenyl, 4-ethoxycarbonylphenyl, 4-fluorophenyl, 4-hydroxyphenyl or 3-hydroxyphenyl.
Claim 2
Dependent Claim
49 words
A compound of the formula ##STR15## wherein R 3 and R 4 are the same and each is 1-naphthyl, 2-napthyl, 4-chlorophenyl, 3-chlorophenyl, 4-methylphenyl, 4-cyanophenyl, 4-dimethylaminophenyl, 3-methylphenyl, 4-bromophenyl, 3-trifluoromethylphenyl, 4-benzoylaminophenyl, 4-tert-butylphenyl, 3,4-dimethylphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3,4-dimethoxyphenyl, 4-methylsulfonylphenyl, 3-chloro-4-methylphenyl, 4-methoxyphenyl, 4-acetoxyphenyl, 4-acetylaminophenyl, 3-cyanophenyl, 3-bromophenyl, 4-(p-butylbenzoyloxy)phenyl, 3,5-dichlorophenyl, 3,5-dimethoxyphenyl, 4-ethoxycarbonylphenyl, 4-fluorophenyl, 4-hydroxyphenyl or 3-hydroxyphenyl.
Claim 3
Dependent Claim
27 words
A compound according to claim 1 wherein R 3 and R 4 are each 4-chlorophenyl, 3-chlorophenyl, 4-methylphenyl, 4-cyanophenyl, 3-methylphenyl, 4-bromophenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 4-methoxyphenyl, 3-cyanophenyl, 3-bromophenyl or 4-ethoxycarbonylphenyl.
Claim 4
Dependent Claim
19 words
A compound according to claim 2 wherein R 3 and R 4 are each 4-chlorophenyl, 3-chlorophenyl, 4-methylphenyl or 4-cyanophenyl.
Claim 5
Dependent Claim
20 words
A compound of the formula ##STR16## wherein R 1 is phenyl or 4-chlorophenyl, and R 2 is 4-methylphenyl or 3,4-dichlorophenyl.
Claim 6
Dependent Claim
20 words
A compound of the formula ##STR16## wherein R 1 is phenyl or 4-chlorophenyl, and R 2 is 4-methylphenyl or 3,4-dichlorophenyl.
References Cited (Backward Citations)
EP0061426A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |