EP0677556A2
Expired / Lapsed
EP
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Coated pigment and colorant composition
Assignee: Artience Co Ltd
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Filing: 1995-04-12
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Granted: —
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Expires: 2015-04-12
Abstract
Abstract A pigment coated with a water-insoluble organic surface modifier can be prepared by: (a) preparing a mixture of water and a substantially water-insoluble organic surface modifier; (b) introducing the mixture, under pressure, into a conduit having a diameter-decreased portion and a turning portion wherein the diameter-decreased and turning portions provide accelerated flow through the diameter-decreased portion and mutual collision of the accelerated mixture or collision of the accelerated mixture against a wall of the conduit, thereby obtaining an aqueous dispersion in which the surface modifier is homogeneously dispersed in water; (c) mixing the aqueous dispersion with a pigment, thereby providing a pigment coated with the surface modifier; and (d) isolating the coated pigment.
Inventors
- 👤 Yuusaku C/O Toyo Ink Manufacturing Co.Ltd. Ide
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 05:25
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: 15
Claim 1
Independent Claim
110 words
A process for producing a coated pigment which process comprises: (a) preparing a mixture of water and a substantially water-insoluble organic surface modifier; (b) introducing the mixture, under pressure, into a conduit having a diameter-decreased portion and a turning portion wherein the diameter-decreased and turning portions provide accelerated flow through the diameter-decreased portion and mutual collision of the accelerated mixture or collision of the accelerated mixture against a wall of the conduit, thereby obtaining an aqueous dispersion in which the surface modifier is homogeneously dispersed in water; (c) mixing the aqueous dispersion with a pigment, thereby providing a pigment coated with the surface modifier; and (d) isolating the coated pigment.
Claim 2
Dependent Claim
55 words
A process according to claim 1, wherein the surface modifier is selected from olefinic hydrocarbons, aliphatic carboxylic acids, amine salts or alkyl esters of aliphatic carboxylic acids, aromatic carboxylic acids, amine salts or alkyl esters of aromatic carboxylic acids, synthetic resins, natural resins, rosin derivatives, varnishes, high-molecular-weight dispersing agents, organic pigment derivatives, and mixtures thereof.
Claim 3
Dependent Claim
21 words
A process according to claim 1 or 2, wherein the surface modifier is a liquid or a solid at room temperature.
Claim 4
Dependent Claim
54 words
A process according to any one of the preceding claims, wherein the conduit comprises at least two flow paths into which portions of the mixture are introduced, a diameter-decreased section of the conduit where the two portions of the mixture collide with each other and a flow path through which the mixture is recovered.
Claim 5
Dependent Claim
36 words
A process according to any one of claims 1 to 3 wherein the conduit has one flow path into which the mixture is introduced and at least one flow path through which the mixture is recovered.
Claim 6
Dependent Claim
31 words
A process according to any one of the preceding claims, wherein the concentration of the surface modifier in the mixture is from 1 to 80 % by weight based on water.
Claim 7
Dependent Claim
33 words
A process according to any one of the preceding claims wherein, in step (b), the mixture collides against a wall of the conduit and two portions of the mixture collide with each other.
Claim 8
Dependent Claim
29 words
A process according to any one of the preceding claims, wherein, in step (b), the mixture is introduced into the conduit at a pressure of at least 200 kg/cm².
Claim 9
Dependent Claim
16 words
A coated pigment obtainable by a process according to any one of claims 1 to 8.
Claim 10
Dependent Claim
14 words
A colorant composition containing a coated pigment according to claim 9 and a vehicle.
Claim 11
Dependent Claim
16 words
A composition according to claim 10, wherein the vehicle is a vehicle for an offset ink.
Claim 12
Dependent Claim
16 words
A composition according to claim 10, wherein the vehicle is a vehicle for a gravure ink.
Claim 13
Dependent Claim
17 words
A colorant composition according to claim 10, wherein the vehicle is a vehicle for a coating composition.
Claim 14
Dependent Claim
14 words
A composition according to claim 10, wherein the vehicle is a vehicle for plastics.
Claim 15
Dependent Claim
16 words
A composition according to claim 10, wherein the vehicle is a vehicle for a water-based color.
References Cited (Backward Citations)
No citation records indexed.
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