JPS575761A - Novel preparation of dioxazine violet pigment - Google Patents

Novel preparation of dioxazine violet pigment

Info

Publication number
JPS575761A
JPS575761A JP8041280A JP8041280A JPS575761A JP S575761 A JPS575761 A JP S575761A JP 8041280 A JP8041280 A JP 8041280A JP 8041280 A JP8041280 A JP 8041280A JP S575761 A JPS575761 A JP S575761A
Authority
JP
Japan
Prior art keywords
pigment
hydrogen halide
dioxazine violet
contact
hydrogen
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.)
Pending
Application number
JP8041280A
Other languages
Japanese (ja)
Inventor
Iwao Sakaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP8041280A priority Critical patent/JPS575761A/en
Publication of JPS575761A publication Critical patent/JPS575761A/en
Pending legal-status Critical Current

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  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

PURPOSE: To obtain pigment industrially advantageously using an inexpensive agnet without requiring waste water treatment, by bringing crude dioxazine violet into contact with a hydrogen halide in an inert solvent.
CONSTITUTION: Crude dioxazine violet is suspended in a solvent (e.g., benzene, toluene, etc.) inert to hydrogen halide in an amount preferably 3W20 times as much as that of the crude dioxazine violet. The suspension, for example, is stirred for 1 to ten and several hours at room temperature to 150°C while being in contact with the hydrogen halide (preferably hydrogen chloride, hydrogen bromide), to give pigment.
EFFECT: Immediately after synthesis in an inert solvent, pigment can be prepared by introducing hydrogen halide, and the particle size of the pigment can be selected by changing the contact temperature with the hydrogen halide.
COPYRIGHT: (C)1982,JPO&Japio
JP8041280A 1980-06-13 1980-06-13 Novel preparation of dioxazine violet pigment Pending JPS575761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8041280A JPS575761A (en) 1980-06-13 1980-06-13 Novel preparation of dioxazine violet pigment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8041280A JPS575761A (en) 1980-06-13 1980-06-13 Novel preparation of dioxazine violet pigment

Publications (1)

Publication Number Publication Date
JPS575761A true JPS575761A (en) 1982-01-12

Family

ID=13717572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8041280A Pending JPS575761A (en) 1980-06-13 1980-06-13 Novel preparation of dioxazine violet pigment

Country Status (1)

Country Link
JP (1) JPS575761A (en)

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