US5286287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo lake pigment suitable for use in printing ink and process for the production thereof
Assignee: Artience Co Ltd
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Filing: 1992-09-09
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Granted: 1994-02-15
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Expires: 2012-09-09
Abstract
Abstract A monoazo lake pigment and a process for its production; the monoazo lake pigment excellent in clearness, transparency, gloss and tinting strength is obtained by coupling a diazo component which is an aromatic amine having a sulfonic acid group with a coupler component which contains (beta)-naphthol or (beta)-oxynaphthoic acid and adding a laking agent during or after the coupling reaction, the coupler component further containing 0.1 to 30 mol %, based the coupler component, of a compound of the following formula, (* CHEMICAL STRUCTURE *) wherein n=1 or 2.
Inventors
- 👤 Yuuji Hirasawa
- 👤 Akimitsu Mochizuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0046; C09B67/0051; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A monoazo lake pigment obtained by coupling a diazo component which is an aromatic amine having a sulfonic acid group with a coupler component which contains β-naphthol or β-oxynaphthoic acid and adding a laking agent during or after the coupling reaction, the coupler component further containing 0.1 to 30 mol %, based the coupler component, of a compound of the following formula, ##STR7## wherein n=1 or 2.
Claim 2
Dependent Claim
67 words
A monoazo lake pigment obtained by coupling a diazo component which is an aromatic amine having a sulfonic acid group with a coupler component which contains β-naphthol or β-oxynaphthoic acid and adding a laking agent during or after the coupling reaction, the coupler component further containing 0.1 to 30 mol %, based the coupler component, of a compound of the following formula, ##STR7## wherein n=1 or 2.
Claim 3
Dependent Claim
33 words
A monoazo lake pigment according to claim 1, wherein the aromatic amine having a sulfonic acid group is at least one member selected from the class consisting of aminobenzenesulfonic acid and aminonaphthalenesulfonic acid.
Claim 4
Dependent Claim
37 words
A monoazo lake pigment according to claim 2, wherein the aromatic amine having a sulfonic acid group is at least one member selected from the class consisting of 2-amino-5-methylbenzenesulfonic acid, 2-amino-4-chloro-5-methylbenzenesulfonic acid, 2-amino-5-chloro-4-methylbenzenesulfonic acid and 2-amino-1-naphthalenesulfonic acid.
Claim 5
Dependent Claim
34 words
A monoazo lake pigment according to claim 1, wherein the compound of the formula recited in claim 1 is contained in an amount of 0.3 to 15 mol % based on the coupler component.
Claim 6
Dependent Claim
22 words
A printing ink composition containing the monoazo lake pigment recited in claim 1 and a vehicle for use in a printing ink.
Claim 7
Dependent Claim
55 words
A printing ink composition according to claim 5, wherein the vehicle for use in a printing ink is for use in an offset ink and contains 20 to 50 parts by weight of a resin, 0 to 30 parts by weight of a plant oil and 10 to 60 parts by weight of a solvent.
Claim 8
Dependent Claim
55 words
A printing ink composition according to claim 5, wherein the vehicle for use in a printing ink is for use in a gravure ink and contains 10 to 50 parts by weight of a resin mixture, 30 to 80 parts by weight of a solvent and 1 to 20 parts by weight of an extender.
Claim 9
Dependent Claim
15 words
A coating composition containing, as a colorant, the monoazo lake pigment recited in claim 1.
Claim 10
Dependent Claim
14 words
A plastic containing, as a colorant, the monoazo lake pigment recited in claim 1.
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) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |