JPS57168952A - Production of stable form dioxazine violet pigment - Google Patents
Production of stable form dioxazine violet pigmentInfo
- Publication number
- JPS57168952A JPS57168952A JP5485681A JP5485681A JPS57168952A JP S57168952 A JPS57168952 A JP S57168952A JP 5485681 A JP5485681 A JP 5485681A JP 5485681 A JP5485681 A JP 5485681A JP S57168952 A JPS57168952 A JP S57168952A
- Authority
- JP
- Japan
- Prior art keywords
- dioxazine violet
- violet pigment
- pigment
- stable form
- production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
PURPOSE: To obtain easily the titled pigment having excellent coloring power, gloss, dispersibility, etc., by adding a 4W11C aliph. or alicyclic ketone to an aq. suspension of a metastable form dioxazine violet pigment and heat-treating the mixture.
CONSTITUTION: A 4W10C aliph. or alicyclic ketone such as methyl isobutyl ketone or 3-methylcyclohexanone in an amount of 0.1W5 times the amount by weight of a pigment mentioned below is added to an aq. suspension of a metastable form dioxazine violet pigment. The mixture is heat-treated to obtain the desired stable form dioxazine violet pigment. Said metastable form dioxazine violet pigment can be prepd. in the following manner. Crude dioxazine violet pigment is sulfated with 60W90% sulfuric acid, and then hydrolyzed. Alternatively, crude dioxazine violet pigment is dissolved in an acetyl halide, and recrystallized from water or a water-soluble solvent.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5485681A JPS57168952A (en) | 1981-04-10 | 1981-04-10 | Production of stable form dioxazine violet pigment |
US06/360,771 US4481358A (en) | 1981-04-10 | 1982-03-22 | Process for producing dioxazine violet pigment |
DE19823211607 DE3211607A1 (en) | 1981-04-10 | 1982-03-30 | METHOD FOR PRODUCING A DIOXAZINE VIOLET PIGMENT |
CH2210/82A CH647539A5 (en) | 1981-04-10 | 1982-04-08 | METHOD FOR PRODUCING A DIOXAZINE VIOLET PIGMENT. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5485681A JPS57168952A (en) | 1981-04-10 | 1981-04-10 | Production of stable form dioxazine violet pigment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57168952A true JPS57168952A (en) | 1982-10-18 |
JPS6356269B2 JPS6356269B2 (en) | 1988-11-07 |
Family
ID=12982228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5485681A Granted JPS57168952A (en) | 1981-04-10 | 1981-04-10 | Production of stable form dioxazine violet pigment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57168952A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006091649A (en) * | 2004-09-27 | 2006-04-06 | Dainippon Ink & Chem Inc | Method for manufacturing pigment composition for blue-pixel portion of color filter, and the color filter |
-
1981
- 1981-04-10 JP JP5485681A patent/JPS57168952A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006091649A (en) * | 2004-09-27 | 2006-04-06 | Dainippon Ink & Chem Inc | Method for manufacturing pigment composition for blue-pixel portion of color filter, and the color filter |
Also Published As
Publication number | Publication date |
---|---|
JPS6356269B2 (en) | 1988-11-07 |
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