Title:
DECOLORIZATION METHOD AND SOLUBILIZATION METHOD FOR METAL COMPLEX COMPOUND
Document Type and Number:
WIPO Patent Application WO/2023/276544
Kind Code:
A1
Abstract:
The problem to be solved by the present invention is to decolorize and solubilize a metal complex by easy methods using non-petroleum raw materials, thereby providing recyclable toners, inks, printed matter, paints, coatings, plastics, fibers, films, resists for black matrixes, resists for photospacers, and cured objects of these resists. It has been discovered that a complex compound composed of trivalent iron metal and a benzenetriol derivative, in which the benzene skeleton has hydroxyl groups at adjacent positions, can be decolorized by making an aqueous dispersion of the complex compound acidic or adding a chelating agent thereto and that the complex compound can be solubilized in water by making the aqueous dispersion alkaline and thereby separation thereof becomes easy.
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Inventors:
SHIGEHIRO TATSUYA (JP)
Application Number:
PCT/JP2022/022419
Publication Date:
January 05, 2023
Filing Date:
June 02, 2022
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C07C39/10; C07C65/03; C07F15/02; C09D7/41; C09D11/037; C09D201/00
Foreign References:
| JP2010503734A | 2010-02-04 | |||
| JPS56159275A | 1981-12-08 | |||
| JPS51103527A | 1976-09-13 | |||
| JPH05247377A | 1993-09-24 | |||
| JPS62501836A | 1987-07-23 | |||
| JPH07166088A | 1995-06-27 |
Other References:
DAI QIONG, YU QUN, TIAN YUAN, XIE XIAOLIN, SONG AIXIN, CARUSO FRANK, HAO JINGCHENG, CUI JIWEI: "Advancing Metal–Phenolic Networks for Visual Information Storage", APPLIED MATERIALS & INTERFACES, AMERICAN CHEMICAL SOCIETY, US, vol. 11, no. 32, 14 August 2019 (2019-08-14), US , pages 29305 - 29311, XP093018815, ISSN: 1944-8244, DOI: 10.1021/acsami.9b09830
Attorney, Agent or Firm:
ONO Takayuki (JP)
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