US4259488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-isoindoline pigments
Assignee: BASF Corp
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Filing: 1979-06-07
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Granted: 1981-03-31
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Expires: 1999-06-07
Abstract
Abstract Isoindoline pigments of the formula ##STR1## or of a formula which is a tautomer thereof, wherein R represents a direct bond or an aliphatic, cycloaliphatic, aliphatic-cycloaliphatic, araliphatic or aromatic radical, R 1 represents a hydrogen atom or an alkyl group of 1 to 4 carbon atoms, or, if R represents an ethylene group, both R 1 s together also represent an ethylene group, R 2 and R 3 represent hydrogen atoms, alkyl groups of 1 to 4 carbon atoms or phenyl groups which are unsubstituted or substituted by methyl groups or halogen atoms, X represents an oxygen atom or a NH group, and Y represents an oxygen or a sulfur atom or a NH group dye plastics in fast yellow or brown shades.
Inventors
- 👤 Jost VON DER Crone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:25
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
An isoindoline pigment of the formula (I) ##STR7## or of a formula (II) ##STR8## or a tautomer thereof, wherein R represents alkylene of 2 to 6 carbon atoms, unsubstituted phenylene, monomethylphenylene, dimethylphenylene, or alkylene phenylene of 7 to 20 carbon atoms; R 1 represents hydrogen or alkyl of 1 to 4 carbon atoms; R 2 and R 3 independently represent hydrogen, alkyl of 1 to 4 carbon atoms, phenyl or phenyl substituted with methyl or halogen; X represents oxygen or NH; and Y represent oxygen, sulfur or NH.
Claim 2
Dependent Claim
88 words
An isoindoline pigment of the formula (I) ##STR7## or of a formula (II) ##STR8## or a tautomer thereof, wherein R represents alkylene of 2 to 6 carbon atoms, unsubstituted phenylene, monomethylphenylene, dimethylphenylene, or alkylene phenylene of 7 to 20 carbon atoms; R 1 represents hydrogen or alkyl of 1 to 4 carbon atoms; R 2 and R 3 independently represent hydrogen, alkyl of 1 to 4 carbon atoms, phenyl or phenyl substituted with methyl or halogen; X represents oxygen or NH; and Y represent oxygen, sulfur or NH.
Claim 3
Dependent Claim
38 words
An isoindoline pigment of the formula (I) according to claim 1 wherein R represents alkylene of 2 to 6 carbon atoms; R 1 , R 2 , and R 3 represent hydrogen; and X and Y represent oxygen.
Claim 4
Dependent Claim
15 words
An isoindoline pigment of the formula I according to claim 2 wherein R represents ethylene.
Claim 5
Dependent Claim
25 words
An isoindoline pigment of the formula II according to claim 1 wherein R 2 and R 3 represent hydrogen; and X and Y represent oxygen.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |