Patent EP0638615A2 successfully refreshed from Google Patents.
EP0638615A2
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EP
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Process for the production of copper phthalocyanine pigment and its use
Assignee: Artience Co Ltd
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Filing: 1994-08-10
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Granted: —
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Expires: 2014-08-10
Abstract
Abstract A process for the production of a copper phthalocyanine pigment comprising wet-milling at least one of halogen-free, monohalogenated or semi-halogenated copper phthalocyanine in the presence of an inorganic salt as a milling aid and an alcohol or a polyol, and then removing the inorganic salt and the organic liquid, wherein 0.1 to 20 % by weight, based on the crude copper phthalocyanine, of MePc-(SO₃⁻⁺NR₁R₂R₃R₄) n is added before or during the wet-milling, wherein Me represents two hydrogen atoms or at least one metal, Pc is a phthalocyanine residue, each of R₁, R₂, R₃ and R₄ is hydrogen, optionally substituted C₁₋₃₀ alkyl or a polyoxy lower alkylene group and n is 1 to 8, provided that at least one of R₁, R₂, R₃ and R₄ is at least C₁₀ or is a polyoxy lower alkylene group.
Inventors
- 👤 Hitoshi C/O Toyo Ink Manufact.Co.Ltd. Maki
- 👤 Katsuhiko C/O Toyo Ink Manuf. Co. Ltd. Sawamura
- 👤 Shigeki C/O Toyo Ink Manufact.Co.Ltd. Kato
- 👤 Toshimitsu C/O Toyo Ink Manuf. Co. Ltd. Ikegaya
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 04:50
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B67/0016; C09B67/0033; C09B67/0034; C09B67/0035; C09D7/00; C09D7/40; C09D7/41
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
182 words
A process for the production of a copper phthalocyanine pigment, which comprises wet-milling at least one crude copper phthalocyanine selected from halogen-free copper phthalocyanine, monohalogenated copper phthalocyanine and semi-halogenated copper phthalocyanine in the presence of an inorganic salt as a milling aid and an organic liquid selected from an alcohol and a polyol, and then removing the inorganic salt and the organic liquid, wherein 0.1 to 20 % by weight, based on the crude copper phthalocyanine, of a compound of the following formula (I) is added before or during the wet-milling, MePc-(SO₃⁻⁺NR₁R₂R₃R₄) n wherein Me represents two hydrogen atoms or at least one metal selected from Al, Fe, Co, Ni, Cu and Zn, Pc is a phthalocyanine residue,each of R₁, R₂, R₃ and R₄ is independently a hydrogen atom, an optionally substituted alkyl group having 1 to 30 carbon atoms or a polyoxy lower alkylene group and n is an integer of 1 to 8, provided that at least one of R₁, R₂, R₃ and R₄ is an alkyl group having at least 10 carbon atoms or a polyoxy lower alkylene group.
Claim 2
Dependent Claim
77 words
A process according to claim 1, wherein a compound of the above formula (1) is added in an amount of 0.1 to 15 % by weight based on the crude copper phthalocyanine before the wet-milling of the crude copper phthalocyanine is completed and in an amount of 0.1 to 15 % by weight based on the crude copper phthalocyanine after the crude copper phthalocyanine is wet-milled or after the inorganic salt and the organic liquid are removed.
Claim 3
Dependent Claim
33 words
A process according to claim 1 or 2, wherein a compound obtained by sulfonating a phthalocyanine and reacting the sulfonated phthalocyanine with an amine is used as the compound of the formula (1).
Claim 4
Dependent Claim
23 words
A process according to claim 3, wherein the amine is at least one selected from primary, secondary and tertiary amines and quaternary ammonium.
Claim 5
Dependent Claim
27 words
A process according to any preceding claim, wherein the alkyl group is substituted with at least one of phenyl, halogen, hydroxyl, carbonyl, carboxyl, ether, ester and acyl.
Claim 6
Dependent Claim
21 words
A process according to any preceding claim, wherein the polyoxy lower alkylene group has a polymerization degree of 2 to 30.
Claim 7
Dependent Claim
16 words
A process according to any preceding claim, wherein the milling aid is a water-soluble inorganic salt.
Claim 8
Dependent Claim
13 words
A process according to any preceding claim, wherein the organic liquid is water-soluble.
Claim 9
Dependent Claim
19 words
A printing ink composition comprising the pigment according to any one of claims 1 to 8 and a vehicle.
Claim 10
Dependent Claim
18 words
A coating composition comprising the pigment according to any one of claims 1 to 8 and a vehicle.
References Cited (Backward Citations)
No citation records indexed.
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