JPS54132626A - Purification of isoindorinon pigment - Google Patents
Purification of isoindorinon pigmentInfo
- Publication number
- JPS54132626A JPS54132626A JP3926278A JP3926278A JPS54132626A JP S54132626 A JPS54132626 A JP S54132626A JP 3926278 A JP3926278 A JP 3926278A JP 3926278 A JP3926278 A JP 3926278A JP S54132626 A JPS54132626 A JP S54132626A
- Authority
- JP
- Japan
- Prior art keywords
- pigment
- crude
- isoindorinon
- purification
- alcohol
- 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
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
PURPOSE: To purify a crude isoindorinon pigment with ease and to obtain the title pigment having high purity, chroma, and clarity, improved light weather, and chemical resistance, and adding an alkali metallic alcoholate to the crude pigment dispersed into an aromatic hydrocarbon solvent, followed by hydrolyzing the dispersion.
CONSTITUTION: A crude isoidorinon pigment shown by the formula I (R is formula II or III) is dispersed into an aromatic by hydrocarbon solvent, e.g., monochlorobenzene. An alkaline (earth) metallic alcoholate (e.g., sodium methoxide) or its hydroxide and an alcohol or its mixture with water are added to the resulting dispersion to form an alkali salt of the pigment, which is separated and hydrolyzed with water of an acid, and, if necessary, in the presence of a dispersant, to give the desired purified pigment. The alcohol is preferably is 1W2C low-grade ahcohol in an amount 0.1W0.5 parts by wt. based on 1 parts by wt. of the pigment.
EFFECT: Purification is carried out directly without separation of a crude pigment.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3926278A JPS54132626A (en) | 1978-04-05 | 1978-04-05 | Purification of isoindorinon 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 |
|---|---|---|---|
| JP3926278A JPS54132626A (en) | 1978-04-05 | 1978-04-05 | Purification of isoindorinon pigment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54132626A true JPS54132626A (en) | 1979-10-15 |
| JPS558546B2 JPS558546B2 (en) | 1980-03-04 |
Family
ID=12548211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3926278A Granted JPS54132626A (en) | 1978-04-05 | 1978-04-05 | Purification of isoindorinon pigment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54132626A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006519167A (en) * | 2003-02-27 | 2006-08-24 | エムシーエー テクノロジーズ ゲーエムベーハー | Solvent-free production method of diketopyrrolopyrrole derivative. |
-
1978
- 1978-04-05 JP JP3926278A patent/JPS54132626A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006519167A (en) * | 2003-02-27 | 2006-08-24 | エムシーエー テクノロジーズ ゲーエムベーハー | Solvent-free production method of diketopyrrolopyrrole derivative. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS558546B2 (en) | 1980-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS54132626A (en) | Purification of isoindorinon pigment | |
| JPS5582161A (en) | Purification of isoindolinone pigment | |
| JPS5524121A (en) | Hydrolysis of benzotrihalide | |
| CA1190560A (en) | PROCESS FOR THE PRODUCTION OF 3-ALKYL-6-METHYL-.beta.- RESORCYCLIC ACID ESTERS | |
| JPS54142234A (en) | Purification of isoindolinone pigment | |
| JPS5650967A (en) | Purification of org. pigment | |
| JPS5414932A (en) | Purification of phenylhydrazine | |
| JPS54106478A (en) | Preparation of 1, 3-dioxane derivative | |
| JPS5610135A (en) | Preparation of di-n-propylmalonic acid | |
| Caton et al. | Synthesis and rearrangement of 2-alkyl-5-hydroxycyclopent-2-enones | |
| JPS57185288A (en) | Preparation of bis(alkylbenzylidene)sorbitol | |
| JPS5576881A (en) | Preparation of high-purity coproporphyrin 3 alkali salt | |
| JPS56103196A (en) | Preparation of d-glucose derivative | |
| JPS57126427A (en) | Preparation of 1-substituted-azulene derivative | |
| GB1470665A (en) | Preparation of o-hydroxyphenylketones | |
| JPS5758661A (en) | Production of p-nitrophenyl-beta-hydroxyethylsulfide | |
| Tsutsui et al. | Protecting group for carboxyl function. Cleavage of 2-tosylethyl esters with fluoride ion in non-aqueous media | |
| JPS5592386A (en) | Preparation of 4-piperidone spiroketal compound | |
| JPS543051A (en) | Preparation of high purity diphenoxyanthraquinones | |
| JPS54148743A (en) | Production of methoclopramide | |
| KR920014788A (en) | Method for preparing 3-hydroxy-5-methyl isoxazole | |
| JPS5692236A (en) | Purification of crude 4,4'-dihydroxybiphenyl | |
| JPS5585540A (en) | Separation of cis- and trans-1-methyl-4-isohexyl- cyclohexanecarboxylic acid | |
| JPS5446729A (en) | Separation of m-cresol | |
| JPS54130622A (en) | Preparation of gamma-quinacridone pigment |