Process Of Preparing Copper Phthalocyanine Particles Exhibiting Alpha

Process Of Preparing Copper Phthalocyanine Particles Exhibiting Alpha Crystallographic Form

Abstract: There is provided a process of preparing copper phthalocyanine (CuPc) particles exhibiting an alpha crystallographic form which comprises the following steps: (a) mixing crude copper phthalocyanine particles containing at least 50 wt % of particles exhibiting a beta crystallographic form with an acid in the presence of CuPc particles substituted by at least one functional group such that at least part of the crude CuPc is dissolved in the acid; and (b) precipitating at least part of the dissolved CuPc in a medium.By adding CuPc derivatives in the acid-pasting step for the phase conversion from beta to alpha crystallographic type CuPc the entire process time of producing blue pigments based on epsilon-CuPc as well as the performance of the color filter pigment containing them can be improved.

Patent Information

Application #

Filing Date

13 October 2011

Publication Number

46/2012

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

Parent Application

Applicants

SOLVAY SA

33 Rue du Prince Albert B-1050 Brussels Belgium

Inventors

1. LEE Hyunsu

Ubang APT 101-1007 #1395-13 Dal-dong Nam-gu Ulsan Korea

2. PARK Jai Won

Breslauer Strasse 19 37085 Göttingen Germany

3. JUNG Kisuck

#1505/105 The Sharp Centum Park APT Jaesong 1-Dong Haeundae-Gu Pusan Korea;

4. HAN Sangmin

#901/107 Jeonggwan Lotte Castle APT Yongsu-ri Jeonggwan-myeon Gijang-gun Pusan Korea

5. KIM Dongyoon

#1403/107 Yuseunghannaeduel Apt. Samho-dong Yangsan-si Gyeongsangnam-do Korea

6. JEONG Hyunsuk

#303/101 Kyungdong ART U 1-Dong Haeundae-Gu Pusan Korea

Specification

There is provided a process of preparing copper phthalocyanine (CuPc) particles exhibiting an alpha crystallographic form which comprises the following steps:
(a) mixing crude copper phthalocyanine particles containing at least 50 wt % of particles exhibiting a beta crystallographic form with an acid in the presence of CuPc particles substituted by at least one functional group such that at least part of the crude CuPc is dissolved in the acid; and (b) precipitating at least part of the dissolved CuPc in a medium.By adding CuPc derivatives in the acid-pasting step for the phase conversion from beta to alpha crystallographic type CuPc the entire process time of producing blue pigments based on epsilon-CuPc as well as the performance of the color filter pigment containing them can be improved.

Documents

Application Documents

#	Name	Date
1	7443-CHENP-2011-AbandonedLetter.pdf	2018-01-10
1	Power of Authority.pdf	2011-10-25
2	7443-CHENP-2011-FER.pdf	2017-06-14
2	Form-5.pdf	2011-10-25
3	7443-CHENP-2011 CORRESPONDENCE OTHERS 11-04-2012.pdf	2012-04-11
3	Form-3.pdf	2011-10-25
4	7443-CHENP-2011 FORM-3 11-04-2012.pdf	2012-04-11
4	Form-1.pdf	2011-10-25
5	7443-CHENP-2011 FORM-3 11-04-2012.pdf	2012-04-11
5	Form-1.pdf	2011-10-25
6	7443-CHENP-2011 CORRESPONDENCE OTHERS 11-04-2012.pdf	2012-04-11
6	Form-3.pdf	2011-10-25
7	7443-CHENP-2011-FER.pdf	2017-06-14
7	Form-5.pdf	2011-10-25
8	7443-CHENP-2011-AbandonedLetter.pdf	2018-01-10
8	Power of Authority.pdf	2011-10-25

Search Strategy

1	7443-CHENP-2011SEARCH_12-06-2017.pdf