JPS5667370A - Preparation of azo pigment - Google Patents

Preparation of azo pigment

Info

Publication number
JPS5667370A
JPS5667370A JP14409379A JP14409379A JPS5667370A JP S5667370 A JPS5667370 A JP S5667370A JP 14409379 A JP14409379 A JP 14409379A JP 14409379 A JP14409379 A JP 14409379A JP S5667370 A JPS5667370 A JP S5667370A
Authority
JP
Japan
Prior art keywords
pigment
benzoic acid
azo dye
neutral
compound
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
JP14409379A
Other languages
Japanese (ja)
Inventor
Shigeru Jiyuzu
Yasuyuki Suzuki
Yoshiaki Hayashi
Hiroshi Nishino
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 JP14409379A priority Critical patent/JPS5667370A/en
Publication of JPS5667370A publication Critical patent/JPS5667370A/en
Pending legal-status Critical Current

Links

Landscapes

  • Coloring (AREA)

Abstract

PURPOSE: To advantageously obtain an azo dye with excellent pigment suitability, industrially, by treating a specified azo dye with warming in a neutral or acidic aqueous suspension containing benzoic acid or benzoic acid and an inorganic acid, to convert into pigment.
CONSTITUTION: An azo dye of the formula is obtained by the diazotization of 1- amino-2-nitro-4-chlorobenzene, followed by coupling with 5-acetoacetylaminobenz- imidazolone. It is necessary to treat the compound for conversion into pigment, because it is composed of a hard particle which has no coloring power. Thus the compound of the formula is treated in a neutral or acidic aqueous suspension containing benzoic acid, or benzoic acid and an inorganic salt (e.g., sodium chloride and sodium sulfate), under normal or applied pressure, at about 40W150°C for about 3W20hr, to obtain a pigment with pigment suitability, composed of a smooth particle having no edge.
COPYRIGHT: (C)1981,JPO&Japio
JP14409379A 1979-11-06 1979-11-06 Preparation of azo pigment Pending JPS5667370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14409379A JPS5667370A (en) 1979-11-06 1979-11-06 Preparation of azo pigment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14409379A JPS5667370A (en) 1979-11-06 1979-11-06 Preparation of azo pigment

Publications (1)

Publication Number Publication Date
JPS5667370A true JPS5667370A (en) 1981-06-06

Family

ID=15354042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14409379A Pending JPS5667370A (en) 1979-11-06 1979-11-06 Preparation of azo pigment

Country Status (1)

Country Link
JP (1) JPS5667370A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210169A (en) * 1985-07-05 1987-01-19 バスフ　アクチェン　ゲゼルシャフト Toning of isoindoline pigment
JPH0551251U (en) * 1991-12-26 1993-07-09 東京電気株式会社 Electric razor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210169A (en) * 1985-07-05 1987-01-19 バスフ　アクチェン　ゲゼルシャフト Toning of isoindoline pigment
US4845214A (en) * 1985-07-05 1989-07-04 Basf Aktiengesellschaft Process for conditioning isoindoline pigments
JPH0551251U (en) * 1991-12-26 1993-07-09 東京電気株式会社 Electric razor

Similar Documents

Publication Publication Date Title
BR8804415A (en) PROCESS TO REDUCE OR INHIBIT THE FORMATION OF A BLUE COLORING CAUSED BY FERRIC IONS IN SODIUM OR WATER ZINC PIRITION;
JPS53112299A (en) Production of alumina sol
AR245176A1 (en) Water soluble azo compounds, process for their preparation and their use as dyestuffs
JPS6433158A (en) Highly water-absorptive resin composition
JPS5667370A (en) Preparation of azo pigment
DE3568180D1 (en) Water soluble triphenedioxazine compounds, process for their preparation and their use as dyestuffs
JPS5632548A (en) Preparation of stable type dioxazine violet pigment
DE3370642D1 (en) Water soluble monoazo compounds, process for their preparation and their use as dyestuffs
DE3561743D1 (en) Water soluble pyridone-monoazo compounds, process for their preparation and their use as dyestuffs
SE8103715L (en) PROCEDURE FOR PREPARING CONCENTRATED SOLUTIONS OF THE AZO VEGETABLES
EP0079563A3 (en) Water soluble 1:2 metal complex azo compounds, process for their preparation and their use as dyestuffs
JPS5527824A (en) Production of alumina sol
DE3365764D1 (en) Water soluble disazo compounds, process for their preparation and their use as dyestuffs
ES8505714A1 (en) Improved pigments
JPS55135165A (en) Production of azo pigment
JPS53136038A (en) Improvement in characteristics of yellow iron oxide pigment
DE2961039D1 (en) N-acylaminohydroxynaphthalenesulfonic acid salts, process for their preparation and their use as coupling components in the preparation of azo dyes.
DE3661930D1 (en) Water soluble triphenedioxazine compounds, process for their preparation and their use as dyestuffs
JPS57207651A (en) Treatment of inorganic pigment
JPS53144559A (en) Color protection of beta-naphthol
DE3661836D1 (en) Water soluble azo compounds, process for their preparation and their use as dyestuffs
DE3662107D1 (en) Water soluble mono and disazo compounds, process for their preparation and their use as dyestuffs
JPS5677251A (en) Preparation of anthraquinone intermediate
JPS553450A (en) Soil stabilization
JPS5419936A (en) Preparation of intermediate for pigment