Patent US3101809A successfully refreshed from Google Patents.
Patent US4008097A successfully refreshed from Google Patents.
US4008097A
Expired / Lapsed
US
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Co-condensate mixtures of iminoisoindolinones
Assignee: Sandoz AG
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Filing: 1975-12-03
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Granted: 1977-02-15
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Expires: 1995-12-03
Abstract
Abstract Disclosed are pigments, being co-condensate mixtures of compounds of formula I, <IMAGE> I wherein R1 is chlorine, bromine, fluorine, methyl, methoxy or ethoxy, preferably chlorine or methyl, R2 is hydrogen or has one of the significances of R1, preferably hydrogen, chlorine or methyl, AT LEAST TWO OF THE COMPOUNDS IN SAID MIXTURE BEING PRESENT IN AN AMOUNT OF AT LEAST 0.1 MOL PER MOL OF MIXTURE.
Inventors
- 👤 Peter Bitterli
- 👤 Fritz Kehrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:15
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/50; C09B57/00; C09B57/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
73 words
A pigment, being a co-condensate mixture of two compounds of formula I, ##STR5## wherein R 1 is chloro, bromo, fluoro, methyl, methoxy or ethoxy, and R 2 is hydrogen or has one of the significances of R 1 , wherein one of the compounds in said mixture is present in an amount of from 20 to 70 mol % and the other compound in an amount of from 80 to 30 mol %.
Claim 2
Dependent Claim
73 words
A pigment, being a co-condensate mixture of two compounds of formula I, ##STR5## wherein R 1 is chloro, bromo, fluoro, methyl, methoxy or ethoxy, and R 2 is hydrogen or has one of the significances of R 1 , wherein one of the compounds in said mixture is present in an amount of from 20 to 70 mol % and the other compound in an amount of from 80 to 30 mol %.
Claim 3
Dependent Claim
19 words
A pigment according to claim 1, wherein, in the compounds of formula I, R 1 is chlorine or methyl.
Claim 4
Dependent Claim
20 words
A pigment according to claim 1, wherein, in the compounds of formula I, R 2 is hydrogen, chlorine or methyl.
Claim 5
Dependent Claim
44 words
A pigment according to claim 1, wherein said mixture consists of a first compound of formula I in which R 1 and R 2 are chlorine and a second compound of formula I in which R 1 is chlorine and R 2 is hydrogen.
Claim 6
Dependent Claim
44 words
A pigment according to claim 1, wherein said mixture consists of a first compound of formula I in which R 1 and R 2 are chlorine and a second compound of formula I in which R 1 is chlorine and R 2 is methyl.
Claim 7
Dependent Claim
44 words
A pigment according to claim 1, wherein said mixture consists of a first compound of formula I in which R 1 and R 2 are chlorine and a second compound of formula I in which R 1 is methyl and R 2 is hydrogen.
Claim 8
Dependent Claim
46 words
A pigment according to claim 1, wherein said mixture consists of a first compound of formula I in which R 1 is chlorine and R 2 is hydrogen and a second compound of formula I, in which R 1 is chlorine and R 2 is methyl.
Claim 9
Dependent Claim
46 words
A pigment according to claim 1, wherein said mixture consists of a first compound of formula I, in which R 1 is chlorine and R 2 is hydrogen and a second compound of formula I, in which R 1 is methyl and R 2 is hydrogen.
Claim 10
Dependent Claim
30 words
A pigment according to claim 4, wherein said first compound is present in a mol% of 30 and said second compound in a mol% of 70 of the co-condensate mixture.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |