US4585878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles
Assignee: BASF Corp
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Filing: 1984-06-18
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Granted: 1986-04-29
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Expires: 2004-06-18
Abstract
Abstract Compounds of the formula ##STR1## in which R 1 and R 2 are unsubstituted or substituted phenyl or naphthyl, and R 3 and R 4 are alkyl, alkoxycarbonyl, phenyl, benzoyl or benzyl, are suitable for dyeing high molecular weight organic material.
Inventors
- 👤 Max Jost
- 👤 Abul Iqbal
- 👤 Alain C. Rochat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:48
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C09; C09B; C09B57/00; C09B57/004; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/924; Y10S8/928
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A compound of the formula I in which R 1 and R 2 are phenyl or said phenyl substituted by one or two fluorine, chlorine or bromine atoms or mixtures thereof, by one, two or three methyl or methoxy groups or mixtures thereof with chlorine atoms, by cyano, by dimethylamino, by trifluoromethyl, by tert-butyl, by hydroxy, by alkoxycarbonyl of 2 to 3 carbon atoms, by benzoylamino or by acetyl; naphthyl or said naphthyl substituted by methoxy; anthryl or phenanthryl; and R 3 and R 4 are both other than hydrogen and are C 1 -C 12 -alkyl, C 2 -C 13 -alkoxycarbonyl, carboethoxymethyl, cyanomethyl, benzoyl, benzyl, allyl, phenyl or said phenyl substituted by chlorine or by bromine, or the group of the formula ##STR36## in which R 1 and R 2 are as defined above, R 17 is hydrogen and R 18 is a divalent radical derived from a C 1 -C 8 -dihaloalkane, C 1 - 10 -dicarboxylic acid halide, phenylene dihalide or xylylene dihalide.
Claim 2
Dependent Claim
166 words
A compound of the formula I in which R 1 and R 2 are phenyl or said phenyl substituted by one or two fluorine, chlorine or bromine atoms or mixtures thereof, by one, two or three methyl or methoxy groups or mixtures thereof with chlorine atoms, by cyano, by dimethylamino, by trifluoromethyl, by tert-butyl, by hydroxy, by alkoxycarbonyl of 2 to 3 carbon atoms, by benzoylamino or by acetyl; naphthyl or said naphthyl substituted by methoxy; anthryl or phenanthryl; and R 3 and R 4 are both other than hydrogen and are C 1 -C 12 -alkyl, C 2 -C 13 -alkoxycarbonyl, carboethoxymethyl, cyanomethyl, benzoyl, benzyl, allyl, phenyl or said phenyl substituted by chlorine or by bromine, or the group of the formula ##STR36## in which R 1 and R 2 are as defined above, R 17 is hydrogen and R 18 is a divalent radical derived from a C 1 -C 8 -dihaloalkane, C 1 - 10 -dicarboxylic acid halide, phenylene dihalide or xylylene dihalide.
Claim 3
Dependent Claim
48 words
A compound according to claim 1 wherein R 1 and R 2 are the same and each is phenyl, 4-chlorophenyl, 3-cyanophenyl, 4-cyanophenyl, 3-chlorophenyl, 3-methylphenyl or 4-methylphenyl, and R 3 and R 4 are the same and each is methyl, ethyl, n-butyl, allyl, 4-chlorophenyl, benzoyl, benzyl, ethoxycarbonylmethyl or cyanomethyl.
Claim 4
Dependent Claim
24 words
A compound according to claim 1 wherein R 1 and R 2 are each phenyl, and R 3 and R 4 are each n-butyl.
Claim 5
Dependent Claim
24 words
A compound according to claim 1 wherein R 1 and R 2 are each phenyl, and R 3 and R 4 are each methyl.
Claim 6
Dependent Claim
24 words
A compound according to claim 1 wherein R 1 and R 2 are each phenyl, and R 3 and R 4 are each benzyl.
Claim 7
Dependent Claim
52 words
A compound of the formula I ##STR37## in which R 1 and R 2 are each phenyl, R 3 is hydrogen, and R 4 is cyanomethyl, n-butyl or the group of the formula ##STR38## in which R 1 and R 2 are phenyl, R 17 is hydrogen, and R 18 is m-xylylene.
Claim 8
Dependent Claim
52 words
A compound of the formula I ##STR37## in which R 1 and R 2 are each phenyl, R 3 is hydrogen, and R 4 is cyanomethyl, n-butyl or the group of the formula ##STR38## in which R 1 and R 2 are phenyl, R 17 is hydrogen, and R 18 is m-xylylene.
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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |