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Phthalocyanine pigment composition and method for producing the same, and ink
US9714357B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9714357-B2 |
| Application number | US-201414888490-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 27, 2014 |
| Priority date | Jul 31, 2013 |
| Publication date | Jul 25, 2017 |
| Grant date | Jul 25, 2017 |
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- Title
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Abstract
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An object is to provide phthalocyanine pigment compositions that have good transparency, gloss, and suitability in the initial viscosity after production as well as outstanding storage stability when used in liquid ink. A copper phthalocyanine pigment composition containing copper phthalocyanine, a rosin compound, copper phthalocyanine sulfonic acid or its salt, and an aliphatic amine with the calcium content of the pigment composition being 200 ppm or less has good transparency, gloss, and suitability in the initial viscosity after production as well as outstanding storage stability when used in liquid ink.
First claim
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The invention claimed is: 1. A copper phthalocyanine pigment composition comprising copper phthalocyanine, a rosin compound, copper phthalocyanine sulfonic acid or a salt thereof, and an aliphatic amine, a calcium content of the pigment composition being 200 ppm or less. 2. A method for producing the copper phthalocyanine pigment composition according to claim 1 , the method comprising a first step including dry-milling crude copper phthalocyanine into a pre-pigment and a second step including treating the pre-pigment obtained in the first step by mixing the pre-pigment with an organic solvent or a liquid mixture of an organic solvent and water in the presence of copper phthalocyanine sulfonic acid or a salt thereof. 3. The method for producing a copper phthalocyanine pigment composition according to claim 2 , wherein a calcium content of process water used in the second step is 10 ppm or less. 4. The method for producing a copper phthalocyanine pigment composition according to claim 2 , wherein in the second step, the liquid mixture of an organic solvent and water is an emulsion conditioned with the rosin compound. 5. A base ink for liquid ink, the base ink comprising 20% or more the copper phthalocyanine pigment composition according to claim 1 . 6. A base ink for liquid ink, the base ink comprising 20% or more copper phthalocyanine pigment composition obtained in the method for producing a copper phthalocyanine pigment composition according to claim 2 . 7. The base ink for liquid ink according to claim 5 , wherein the base ink for liquid ink is based on nitrocellulose resin.
Assignees
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Classifications
based on natural resins · CPC title
in organic medium (C09D17/003, C09D17/004 take precedence) · CPC title
based on carbohydrates · CPC title
Grinding; Milling with solid grinding or milling assistants · CPC title
Mixtures of phthalocyanines · CPC title
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- What does patent US9714357B2 cover?
- An object is to provide phthalocyanine pigment compositions that have good transparency, gloss, and suitability in the initial viscosity after production as well as outstanding storage stability when used in liquid ink. A copper phthalocyanine pigment composition containing copper phthalocyanine, a rosin compound, copper phthalocyanine sulfonic acid or its salt, and an aliphatic amine wit…
- Who is the assignee on this patent?
- Dainippon Ink & Chemicals
- What technology area does this patent fall under?
- Primary CPC classification C09D17/003. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 25 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).