Title:
PHTHALOCYANINE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/045236
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a production method capable of producing a high-performance phthalocyanine compound and composition that can be used in a pigment composition, a pigment dispersion, a printing ink, a coating material, a printed object, a printed object laminate, a coated object, a color filter or the like from a biomass starting material in a manner such that it is possible to control the number of a variety of types of functional groups and the positions thereof. This problem can be solved by using a furan derivative and maleic anhydride as starting materials, performing a Diels-Alder (DA) reaction to obtain a DA intermediate, subjecting the DA intermediate to a ring-opening dehydration reaction to synthesize a phthalic anhydride derivative that is used in conventional phthalocyanine synthesis, and performing phthalocyanine synthesis.
Inventors:
FOO SIONGWAN (JP)
EBATO HIROSHI (JP)
SAKURAI MUNENORI (JP)
EBATO HIROSHI (JP)
SAKURAI MUNENORI (JP)
Application Number:
PCT/JP2021/031298
Publication Date:
March 03, 2022
Filing Date:
August 26, 2021
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C09B47/06; C09B67/20; C09B67/22
Foreign References:
| JP2020038368A | 2020-03-12 | |||
| JP2016193897A | 2016-11-17 |
Attorney, Agent or Firm:
OGAWA Shinji (JP)
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