Title:
DISAZO PIGMENT, PIGMENT COMPOSITION, AND PRINTING INK
Document Type and Number:
WIPO Patent Application WO/2022/000131
Kind Code:
A1
Abstract:
A disazo pigment with high safety in which the content of chemical substances that may be harmful, in particular, in the food packaging field and the like and that may be regulated substances is reduced. A disazo pigment according to the present invention has a polychlorinated biphenyl content of less than 15 ppm and a primary aromatic amine content of less than 700 ppm. Preferably, the disazo pigment is at least one selected from a group consisting of C. I. Pigment Yellow 83, C. I. Pigment Yellow 13, and C. I. Pigment Yellow 14.
Inventors:
JI SHUMEI (CN)
MASUKO ISSEI (JP)
HOSAKA MASAKI (JP)
OKADA KYOICHI (JP)
KOBAYASHI NAGATOSHI (JP)
LIAO XIYANG (CN)
ZHAO WEI (CN)
MASUKO ISSEI (JP)
HOSAKA MASAKI (JP)
OKADA KYOICHI (JP)
KOBAYASHI NAGATOSHI (JP)
LIAO XIYANG (CN)
ZHAO WEI (CN)
Application Number:
PCT/CN2020/098547
Publication Date:
January 06, 2022
Filing Date:
June 28, 2020
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
JI SHUMEI (CN)
JI SHUMEI (CN)
International Classes:
C09B35/039; C09B67/20; C09D11/02
Foreign References:
| US20110061564A1 | 2011-03-17 | |||
| US5194597A | 1993-03-16 | |||
| CN109651836A | 2019-04-19 | |||
| CN103160135A | 2013-06-19 | |||
| CN103131204A | 2013-06-05 | |||
| CN103087544A | 2013-05-08 | |||
| CN109627803A | 2019-04-16 | |||
| CN101381527A | 2009-03-11 | |||
| US4643770A | 1987-02-17 |
Other References:
See also references of EP 4172273A4
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
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