EP0221466A2
Expired / Lapsed
EP
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Copper phthalocyanine pigments
Assignee: BASF Corp
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Filing: 1986-10-23
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Granted: —
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Expires: 2006-10-23
Abstract
Abstract process for preparing phthalocyanine pigment which exhibits excellent flow characteristics when dispersed in solvent type inks comprising the steps of I. mixing in a high shear mixer a) premilled copper phthalocyanine crude pigment, b) tri-(diethylamino-methylene) copper phthalocyanine or an organic salt thereof, and c) a phase director and II. digesting the mixture in water or an aqueous mineral acid solution.
Inventors
- 👤 Thomas Edward Donegan
- 👤 Timothy Gerard Leary
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 08:43
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035; C09B67/0001; C09B67/0014; C09B67/0016
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
63 words
1 . A process for preparing phthalocyanine pigment which exhibits excellent flow characteristics when dispersed in solvent type inks comprising the steps of I. mixing in a high shear mixer a) premilled copper phthalocyanine crude pigment, b) tri-(diethylamino-methylene) copper phthalocyanine or an organic salt thereof, and c) a phase director and II. digesting the mixture in water or an aqueous mineral acid solution.
Claim 2
Dependent Claim
63 words
1 . A process for preparing phthalocyanine pigment which exhibits excellent flow characteristics when dispersed in solvent type inks comprising the steps of I. mixing in a high shear mixer a) premilled copper phthalocyanine crude pigment, b) tri-(diethylamino-methylene) copper phthalocyanine or an organic salt thereof, and c) a phase director and II. digesting the mixture in water or an aqueous mineral acid solution.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the digested product is filtered, washed, dried, and pulverized.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein a flocculation resistant substance is incorporated in said mixture.
Claim 5
Dependent Claim
15 words
The process of claim 3 wherein a surfactant is also incorporated in said mixture during.
Claim 6
Dependent Claim
19 words
The process of claim 4 wherein said digested product is filtered, washed, dried, and pulverized in a hammer mill.
Claim 7
Dependent Claim
12 words
The process of claim 1 wherein said phase director is diethylene glycol.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein said mixture is digested in water.
Claim 9
Dependent Claim
23 words
The process of claim 1 wherein said mixture is digested in an aqueous HC1 solution having a pH of about 1 to 2.
Claim 10
Dependent Claim
41 words
The process of claim 1 wherein said mixing step is performed for about one to five hours at a temperature ranging from ambient to about 120°C and said digestion temperature is about 50° to 100°C for about .5 to five hours.
Claim 11
Dependent Claim
61 words
The process of claim 9 wherein the amount of said tri-(diethylamino-methylene) copper phthalocyanine compound is from about 0.5 to 1.5 percent of the premilled copper phthalocyanine and the amount of said phase director is from about 20 to 100 percent of said copper phthalocyanine and the amount of said mixture is about 0.1 percent to 30 percent of the digestion liquid.
Claim 12
Dependent Claim
24 words
The process of claim 9 wherein a floccuation resistant substance and a quaternary ammonium salt are incorporated in said mixture during said digestion step.
Claim 13
Dependent Claim
90 words
1 2. The process of claim 11 wherein the amount of said tri-(diethylamino-methylene) copper phthalocyanine compound is from about 0.5 to 1.5 percent of the premilled copper phthalocyanine, the amount of said phase director is from about 20 to 100 percent of said copper phthalocyanine and the amount of said mixture is about 0.1 to 30 percent of the digestion liquid, the amount of flocculation resistant substance is about 5 to 15 percent and the amount of quarternary ammonium salt is about 4.0 to 10.0 percent of the final product.
Claim 14
Dependent Claim
14 words
The process of claim 12 wherein said flocculation resistant substance is monosulfonated copper phthalocyanine.
Claim 15
Dependent Claim
15 words
The process of claim 13 wherein said quaternary ammonium salt ia dicoco dimethyl ammonium chloride.
References Cited (Backward Citations)
No citation records indexed.
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