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US4810302A
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Azo pigment composition
Assignee: Artience Co Ltd
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Filing: 1987-03-11
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Granted: 1989-03-07
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Expires: 2007-03-11
Abstract
Abstract An azo pigment composition suitable for use in a gravure printing ink or paint comprises the following components (I) and (II): (I): a compound obtained by coupling a diazonium salt of a benzene-type amine, which has a carboxyl group or sulfonic group at the meta or para position with respect to the amino group, and either coupler of beta-naphthol or beta-hydroxynaphtoic acid; (II): a naphthol-type azo pigment, such as Parmanent Carmine FB (C.I. 12490), Brilliant Fast Scarlet (C.I. 12315), and Lake Red C (C.I. 15585), etc. The composition does not flocculate pigment particles in a gravure ink or paint during a long period storage.
Inventors
- 👤 Takenori Funatsu
- 👤 Mikio Hayashi
- 👤 Yoshitaka Ohtomo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:07
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0046; C09B67/0051; C09D; C09D17/00; C09D17/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
An azo pigment composition characterized by comprising: a compound or a metal organic amine salt thereof (I), said compound being obtained by coupling a diazo component and a coupler component, said diazo component being a diazonium salt of a benzene-amine, which has a carboxyl group or sulfonic group at the meta or para position with respect to the amino group, said coupler being selected from the group consisting of beta-naphthol and beta-hydroxynaphtoic acid; and an azo lake pigment (II) which coupler component being selected from the group consisting of beta-naphthol, beta-hydroxynaphtoic acid and naphthol-AS; wherein said compound or salt thereof (I) being contained in an amount of 0.5 to 15 wt % of the azo lake pigment (II).
Claim 2
Dependent Claim
118 words
An azo pigment composition characterized by comprising: a compound or a metal organic amine salt thereof (I), said compound being obtained by coupling a diazo component and a coupler component, said diazo component being a diazonium salt of a benzene-amine, which has a carboxyl group or sulfonic group at the meta or para position with respect to the amino group, said coupler being selected from the group consisting of beta-naphthol and beta-hydroxynaphtoic acid; and an azo lake pigment (II) which coupler component being selected from the group consisting of beta-naphthol, beta-hydroxynaphtoic acid and naphthol-AS; wherein said compound or salt thereof (I) being contained in an amount of 0.5 to 15 wt % of the azo lake pigment (II).
Claim 3
Dependent Claim
44 words
An azo pigment composition according to claim 1, wherein hydrogen atoms in the benzene nucleus of said benzene-amine are substituted with at least one member selected from the group consisting of halogen atom, hydroxyl group, nitro group, methyl group, acetylamino group, and methoxy group.
Claim 4
Dependent Claim
23 words
An azo pigment composition according to any of claims 1 wherein the metal salt (I) is a salt of an alkaline earth metal.
Claim 5
Dependent Claim
24 words
An azo pigment composition according to any of claims 1, wherein the organic amine salt (I) is a salt of an aliphatic primary amine.
Claim 6
Dependent Claim
21 words
An azo pigment composition according to claim 2, wherein the metal salt (I) is a salt of an alkaline earth metal.
Claim 7
Dependent Claim
22 words
An azo pigment composition according to claim 2, wherein the organic amine salt (I) is a salt of an aliphatic primary amine.
References Cited (Backward Citations)
US4491481A
Cited
US4334932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |