Patent US5795376A successfully refreshed from Google Patents.
US5795376A
Expired / Lapsed
US
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Coated pigment and colorant composition
Assignee: Artience Co Ltd
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Filing: 1997-09-05
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Granted: 1998-08-18
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Expires: 2017-09-05
Abstract
Abstract A coated pigment highly surface-modified with a substantially water-insoluble organic surface modifier, produced by preparing a mixture of water and a substantially water-insoluble organic surface modifier, pressurizing the mixture, introducing the mixture into a flow path having a diameter-decreased portion and a turning portion to cause a shear force in the mixture of which the flow is accelerated while the mixture is passing the diameter-decreased portion, mutual collision of the mixture of which the flow has been accelerated or collision of the mixture of which the flow has been accelerated against a wall constituting the flow path, thereby obtaining an aqueous dispersion in which the substantially water-insoluble organic surface modifier is homogeneously dispersed in the water, mixing the aqueous dispersion with the pigment to coat the pigment with the substantially water-insoluble organic surface modifier, and isolating the pigment coated with the substantially-water-insoluble organic surface modifier.
Inventors
- 👤 Yusaku Ide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:35
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/421; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09C; C09C3/00; C09C3/08; C09C3/10; C09D7/00; C09D7/40; C09D7/41; C09D7/60; C09D7/61; C09D7/62; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C08; C08K; C08K9/00; C08K9/04; C08K9/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
An offset ink composition which comprises a coated pigment produced by preparing a mixture of water and a substantially water-insoluble organic surface modifier, pressurizing the mixture, introducing the mixture into a flow path having a diameter-decreased portion and a turning portion to cause a shear force in the mixture of which the flow is accelerated while the mixture is passing the diameter-decreased portion, mutual collision of the mixture of which the flow has been accelerated or collision of the mixture of which the flow has been accelerated against a wall constituting the flow path, thereby obtaining an aqueous dispersion in which the substantially water-insoluble organic surface modifier is homogeneously dispersed in the water, mixing the aqueous dispersion with a pigment to coat the pigment with the substantially water-insoluble organic surface modifier, and isolating the pigment coated with the substantially water-insoluble organic surface modifier, and a vehicle for an offset ink.
Claim 2
Dependent Claim
150 words
An offset ink composition which comprises a coated pigment produced by preparing a mixture of water and a substantially water-insoluble organic surface modifier, pressurizing the mixture, introducing the mixture into a flow path having a diameter-decreased portion and a turning portion to cause a shear force in the mixture of which the flow is accelerated while the mixture is passing the diameter-decreased portion, mutual collision of the mixture of which the flow has been accelerated or collision of the mixture of which the flow has been accelerated against a wall constituting the flow path, thereby obtaining an aqueous dispersion in which the substantially water-insoluble organic surface modifier is homogeneously dispersed in the water, mixing the aqueous dispersion with a pigment to coat the pigment with the substantially water-insoluble organic surface modifier, and isolating the pigment coated with the substantially water-insoluble organic surface modifier, and a vehicle for an offset ink.
Claim 3
Dependent Claim
60 words
A composition pigment according to claim 1, wherein the substantially water-insoluble organic surface modifier is at least one selected from the group consisting of olefinic hydrocarbons, aliphatic carboxylic acids, amine salts or alkyl esters of these, aromatic carboxylic acids, amine salts or alkyl esters of these, synthetic resins, natural resins, rosin derivatives, varnishes, high-molecular-weight dispersing agents, and organic pigment derivatives.
Claim 4
Dependent Claim
23 words
A composition according to claim 1, wherein the substantially water-insoluble organic surface modifier is a liquid or a solid at a room temperature.
Claim 5
Dependent Claim
72 words
A composition according to claim 1, wherein the coated pigment is obtained by mixing a pigment with the aqueous dispersion prepared by introducing the mixture into the flow path having at least 2 flow paths into which two portions of the mixture are introduced, a diameter-decreased flow path where the two portions of the mixture are allowed to collide with each other, and a flow path through which the mixture is recovered.
Claim 6
Dependent Claim
51 words
A composition according to claim 1, wherein the coated pigment is obtained by mixing a pigment with the aqueous dispersion prepared by introducing the mixture into the flow path having one flow path into which the mixture is introduced and at least one flow path through which the mixture is recovered.
Claim 7
Dependent Claim
23 words
A composition according to claim 1, wherein the mixture has a substantially water-insoluble organic surface modifier concentration of 1 to 80% by weight.
Claim 8
Dependent Claim
46 words
A composition according to claim 1, wherein the coated pigment is obtained by mixing a pigment with the aqueous dispersion obtained by allowing the mixture to collide against a wall of the flow path and allowing two portions of the mixture to collide with each other.
Claim 9
Dependent Claim
39 words
A composition according to claim 1, wherein the coated pigment is obtained by mixing a pigment with the aqueous dispersion obtained by introducing the mixture into the flow path at a pressure of at least 200 kg/cm 2 .
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) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |