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JPS5582161A - Purification of isoindolinone pigment - Google Patents

Purification of isoindolinone pigment

Info

Publication number
JPS5582161A
JPS5582161A JP15421378A JP15421378A JPS5582161A JP S5582161 A JPS5582161 A JP S5582161A JP 15421378 A JP15421378 A JP 15421378A JP 15421378 A JP15421378 A JP 15421378A JP S5582161 A JPS5582161 A JP S5582161A
Authority
JP
Japan
Prior art keywords
solvent
isoindolinone pigment
salt
pigment
acid
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
Application number
JP15421378A
Other languages
Japanese (ja)
Other versions
JPS5647220B2 (en
Inventor
Osamu Fujii
Misao Takano
Takeshi Uotani
Eiji Iwamoto
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.)
Tosoh Corp
Original Assignee
Toyo Soda Manufacturing 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 Toyo Soda Manufacturing Co Ltd filed Critical Toyo Soda Manufacturing Co Ltd
Priority to JP15421378A priority Critical patent/JPS5582161A/en
Priority to DE19792913206 priority patent/DE2913206A1/en
Priority to US06/026,663 priority patent/US4223152A/en
Priority to GB7911993A priority patent/GB2023159B/en
Publication of JPS5582161A publication Critical patent/JPS5582161A/en
Publication of JPS5647220B2 publication Critical patent/JPS5647220B2/ja
Granted legal-status Critical Current

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  • Indole Compounds (AREA)

Abstract

PURPOSE: To improve the purity, clarity and chroma of an isoindolinone pigment, by dispersing a crude isoindolinone pigment in a specific solvent, separating the pigment from the solvent as an alkali metal salt, dispersing the salt in the above solvent, and hydrolyzing with an acid.
CONSTITUTION: A crude isoindolinone pigment is dispersed in an aromatic hydrocarbon solvent such as monochlorobenzene, and converted to the alklai metal salt by adding an alkali(ne earth) metal alcoholate (pref. sodium methylate) or hydroxide (pref. sodium hydroxide, barium hydroxide, etc.) and an alcohol and/ or water. The salt is separated, again dispersed in the above aromatic hydrocarbon slovent, and hydrolyzed with an acid such as acetic acid.
EFFECT: Excellent light resistance, weatherability and chemical resistance. Sharp particle size distribution. High dispersibility.
COPYRIGHT: (C)1980,JPO&Japio
JP15421378A 1978-04-05 1978-12-15 Purification of isoindolinone pigment Granted JPS5582161A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP15421378A JPS5582161A (en) 1978-12-15 1978-12-15 Purification of isoindolinone pigment
DE19792913206 DE2913206A1 (en) 1978-04-05 1979-04-03 PROCESS FOR THE MANUFACTURING OF A PURIFIED PIGMENT OF THE ISOINDOLINONE SERIES
US06/026,663 US4223152A (en) 1978-04-05 1979-04-03 Process for purifying crude isoindolinone series pigments
GB7911993A GB2023159B (en) 1978-04-05 1979-04-05 Process for purifying crude isoindolinone series pigments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15421378A JPS5582161A (en) 1978-12-15 1978-12-15 Purification of isoindolinone pigment

Publications (2)

Publication Number Publication Date
JPS5582161A true JPS5582161A (en) 1980-06-20
JPS5647220B2 JPS5647220B2 (en) 1981-11-09

Family

ID=15579306

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15421378A Granted JPS5582161A (en) 1978-04-05 1978-12-15 Purification of isoindolinone pigment

Country Status (1)

Country Link
JP (1) JPS5582161A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150522U (en) * 1986-03-17 1987-09-24

Also Published As

Publication number Publication date
JPS5647220B2 (en) 1981-11-09

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