Title:
PROCESS FOR AQUEOUS MILLING OF QUINACRIDONE PIGMENT
Document Type and Number:
Japanese Patent JP2012177130
Kind Code:
A
Abstract:
To provide an environmentally friendly process that does not produce large amounts of waste in the milling or recrystatlization and that allows the reduction in particle size in two isomorphous crystal phases (β and γ crystal phases) of quinacridones without destroying the crystal structure of a pigment.
A β- or γ-quinacridone crude pigment is added to 2,9-dichloro-quinacridone as a crystal phase inhibitor. Moreover, organic pigments are isolated after milling the crude pigment in the presence of a styrene copolymer dispersants, a defoamer, an additive, and greater than about 10 wt.% of water.
More Like This:
| WO/1998/045523 | BIODEGRADABLE DRY CLEANING SOLVENT |
| JPS55131065 | QUINACRIDONE PIGMENT FINISHING |
Inventors:
HE YINGXIA
CAMPBELL COLIN DENNIS
SCHILLING GORDIAN
CARTER RHONDA
CAMPBELL COLIN DENNIS
SCHILLING GORDIAN
CARTER RHONDA
Application Number:
JP2012108493A
Publication Date:
September 13, 2012
Filing Date:
May 10, 2012
Export Citation:
Assignee:
CIBA HOLDING INC
International Classes:
C09B67/10; C03C17/00; C07D471/00; C07D471/04; C07D491/00; C07D498/00; C07D513/00; C07D515/00; C08J3/00; C08K3/20; C08K5/00; C08K5/34; C08K5/48; C08K9/00; C08L25/00; C09B27/00; C09B48/00; C09B67/20; C09B67/46; C09B67/50; C09B67/52; C09D17/00; C09B
Domestic Patent References:
| JPH1088042A | 1998-04-07 | |||
| JPH09176543A | 1997-07-08 | |||
| JP2003147243A | 2003-05-21 | |||
| JPH1088042A | 1998-04-07 | |||
| JPH09176543A | 1997-07-08 | |||
| JP2002179961A | 2002-06-26 | |||
| JP2003147243A | 2003-05-21 | |||
| JP2000281930A | 2000-10-10 | |||
| JPS6469664A | 1989-03-15 | |||
| JPH11323232A | 1999-11-26 |
Foreign References:
| WO2002092700A1 | 2002-11-21 |
Attorney, Agent or Firm:
Hajime Tsukuni
Yasuo Yanagibashi
Satoko Ito
Masatoshi Ando
Fusayuki Saito
Yasuo Yanagibashi
Satoko Ito
Masatoshi Ando
Fusayuki Saito