Patent US3180831A successfully refreshed from Google Patents.
Patent US5716435A successfully refreshed from Google Patents.
US5716435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording fluid for ink-jet printing and process for the production thereof
Assignee: Artience Co Ltd
•
Filing: 1996-01-26
•
Granted: 1998-02-10
•
Expires: 2016-01-26
Abstract
Abstract PCT No. PCT/JP96/00147 Sec. 371 Date Sep. 17, 1996 Sec. 102(e) Date Sep. 17, 1996 PCT Filed Jan. 26, 1996 PCT Pub. No. WO96/23032 PCT Pub. Date Aug. 1, 1996A water-dispersed inkjet recording liquid excellent in water resistance and transparency and also excellent in the property of ejection from a nozzle, containing, as a colorant, a water-based dispersion of an organic pigment (A) having an average particle diameter of 10 to 150 nm (measured by laser scattering), the water-based dispersion of the organic pigment (A) being obtained by mechanically kneading a mixture containing at least three components, said components being, the organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A) and a water-soluble solvent (C) to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) by washing the kneaded mixture with water, and a process for the production thereof.
Inventors
- 👤 Seiji Aida
- 👤 Tsutomu Fujigamori
- 👤 Hisashi Uraki
- 👤 Ichiro Toyoda
- 👤 Sunao Satake
- 👤 Seiji Sawada
- 👤 Yasuharu Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:20
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322; C09D11/324; C09D11/326
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
139 words
A water-dispersed inkjet recording liquid containing, as a colorant, a water-based dispersion of an organic pigment (A) having an average particle diameter of 10 to 150 nm measured by laser scattering, the water-based dispersion of the organic pigment (A) being obtained by mechanically kneading a mixture containing at least the following components, the organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A), a water-soluble solvent (C) and a resin (E) selected from the group consisting of a rosin, an epoxy resin, a (meth)acrylic resin, a rosin-modified maleic acid resin and a rosin-modified phenolic resin, to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) by washing the kneaded mixture with water.
Claim 2
Dependent Claim
139 words
A water-dispersed inkjet recording liquid containing, as a colorant, a water-based dispersion of an organic pigment (A) having an average particle diameter of 10 to 150 nm measured by laser scattering, the water-based dispersion of the organic pigment (A) being obtained by mechanically kneading a mixture containing at least the following components, the organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A), a water-soluble solvent (C) and a resin (E) selected from the group consisting of a rosin, an epoxy resin, a (meth)acrylic resin, a rosin-modified maleic acid resin and a rosin-modified phenolic resin, to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) by washing the kneaded mixture with water.
Claim 3
Dependent Claim
208 words
A water-dispersed inkjet recording liquid according to claim 1, wherein the water-based dispersion of the organic pigment (A) is a product obtained by further adding a pigment derivative of the formula (1), P-- X--Y--Z--N(R.sup.1)R.sup.2 !.sub.n ( 1) wherein P is an organic pigment residue, a heterocyclic ring residue or an aromatic polycyclic compound residue, X is a divalent binding group formed of a chemically rational combination of 2 to 15 atoms selected from the group consisting of S, C, N, O and H, Y is a divalent binding group selected from the group consisting of "(1) a divalent bond, (2) --NR-- in which R is H or an alkyl" group having 1 to 18 carbon atoms, and (3) --O--, Z is an alkylene group having 1 to 6 carbon atoms, either each of R 1 and R 2 is independently an optionally substituted alkyl group having 1 to 18 carbon atoms or R 1 and R 2 form a heterocyclic ring which may have a substituent, and n is an integer of 1 to 3, to the mixture, kneading the mixture to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) by washing the kneaded mixture with water.
Claim 4
Dependent Claim
40 words
A water-dispersed inkjet recording liquid according to claim 1, wherein the organic pigment (A) is at least one selected from the group consisting of quinacridone organic pigments, phthalocyanine organic pigments, benzimidazolone organic pigments, isoindolinone organic pigments and azo organic pigments.
Claim 5
Dependent Claim
25 words
A water-dispersed inkjet recording liquid according to claim 1, wherein the water-dispersed inkjet recording liquid further contains a water-based resin in addition to the colorant.
Claim 6
Dependent Claim
20 words
A water-dispersed inkjet recording liquid according to claim 4, wherein the water-dispersed inkjet recording liquid further contains a neutralizing agent.
Claim 7
Dependent Claim
26 words
A water-dispersed inkjet recording liquid according to claim 4, wherein the organic pigment (A) is contained in the range of from 0.1 to 10% by weight.
Claim 8
Dependent Claim
29 words
A water-dispersed inkjet recording liquid according to claim 4, wherein the water-dispersed inkjet recording liquid has a viscosity in the range of from 0.8 to 15 centipoise (25° C.).
Claim 9
Dependent Claim
34 words
A water-dispersed inkjet recording liquid according to claim 4, wherein the water-based resin is contained in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the recording liquid.
Claim 10
Dependent Claim
191 words
A process for the production of a water-dispersed inkjet recording liquid, which comprises the following steps a) - d, a) mechanically kneading a mixture containing at least the following components, an organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A), a water-soluble solvent (C) and a resin (E) selected from the group consisting of a rosin, an epoxy resin, a (meth)acrylic resin, a rosin-modified maleic acid resin and a rosin-modified phenolic resin, to finely mill the organic pigment (A), b) removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) from the mixture of the finely milled organic pigment (A) by washing the mixture with water, to obtain a water-based dispersion of the organic pigment (A) having an average particle diameter of 10 to 150 nm (measured by laser scattering), c) adding and dispersing a water-based resin to/in the water-based dispersion, and d) adding water and an additive to the dispersion to dilute the dispersion and filtering the diluted dispersion through a filter having an opening diameter of 3 μm or less.
Claim 11
Dependent Claim
191 words
A process for the production of a water-dispersed inkjet recording liquid, which comprises the following steps a) - d, a) mechanically kneading a mixture containing at least the following components, an organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A), a water-soluble solvent (C) and a resin (E) selected from the group consisting of a rosin, an epoxy resin, a (meth)acrylic resin, a rosin-modified maleic acid resin and a rosin-modified phenolic resin, to finely mill the organic pigment (A), b) removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) from the mixture of the finely milled organic pigment (A) by washing the mixture with water, to obtain a water-based dispersion of the organic pigment (A) having an average particle diameter of 10 to 150 nm (measured by laser scattering), c) adding and dispersing a water-based resin to/in the water-based dispersion, and d) adding water and an additive to the dispersion to dilute the dispersion and filtering the diluted dispersion through a filter having an opening diameter of 3 μm or less.
Claim 12
Dependent Claim
165 words
A process according to claim 9 wherein the mixture in the step a) further contains a pigment derivative of the formula (1), P-- X--Y--Z--N(R.sup.1)R.sup.2 !.sub.n ( 1) wherein P is an organic pigment residue, a heterocyclic ring residue or an aromatic polycyclic compound residue, X is a divalent binding group formed of a chemically rational combination of 2 to 15 atoms selected from the group consisting of S, C, N, O and H, Y is a divalent binding group selected from the group consisting of (1) a direct bond, (2) --NR-- in which R is H or an alkyl group having 1 to 18 carbon atoms, and (3) --O--, Z is an alkylene group having 1 to 6 carbon atoms, either each of R 1 and R 2 is independently an optionally substituted alkyl group having 1 to 18 carbon atoms or R 1 and R 2 form a heterocyclic ring which may have a substituent, and n is an integer of 1 to 3.
Claim 13
Dependent Claim
38 words
A process for the production of a water-dispersed inkjet recording liquid according to claim 9, wherein the water-based resin is dispersed in the water-based dispersion in the step c) by kneading the water-based resin and the water-based dispersion.
Claim 14
Dependent Claim
42 words
A process for the production of a water-dispersed inkjet recording liquid according to claim 9, wherein in the step c), the organic pigment has a concentration of 10 to 40% by weight and the organic pigment and the water-based resin are dispersed.
Claim 15
Dependent Claim
62 words
A process for the production of water-dispersed inkjet recording liquid according to claim 9, wherein the additive in the step d) contains at least one selected from the group consisting of a neutralizing agent for the water-based resin, a dispersing agent, an aqueous solvent for retaining wettability, an antifungal agent, an agent for adjusting penetration, a chelating agent and an antifoaming agent.
References Cited (Backward Citations)
US3891455A
Cited
US4257951A
Cited
US4298399A
Cited
US5281268A
Cited
JPH04309572A
Cited
JPH05263028A
Cited
JPH0649400A
Cited
US5310778A
Cited
JPH06157954A
Cited
US5476544A
Cited
EP0638615A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-09 | 2001-08-11 | 2002-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-09 | 2005-08-11 | 2006-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-09 | 2009-08-11 | 2010-02-10 | $7700.00 | Window Closed / Lapsed |