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Patent Searching and Data


Title:
METHOD FOR PREPARING PIGMENT DISPERSION
Document Type and Number:
WIPO Patent Application WO/2020/199463
Kind Code:
A1
Abstract:
Provided in the present invention is a method for preparing a pigment dispersion: using a covalent organic framework material with a network structure as a template, making pigment molecules in the form of a solution crystallise in the network structure of the covalent organic framework, such that the mesh size of the network structure of the covalent organic framework can be used to control the particle size of the pigment crystals; after the pigment is fully crystallised, separating the pigment crystals from the covalent organic framework by means of a salt washing method, and adding a surfactant; thus, a pigment dispersion with high dispersibility and uniform particle size can be obtained and, after post-treatment, the pigment dispersion can be used for preparing colour photoresist, being a high performance pigment capable of achieving the high penetration and high contrast of a display product; the covalent organic framework material can be re-used multiple times.

Inventors:
ZHA BAO (CN)
Application Number:
PCT/CN2019/101896
Publication Date:
October 08, 2020
Filing Date:
August 22, 2019
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Assignee:
SHENZHEN CHINA STAR OPTOELECT (CN)
International Classes:
C08G12/08; G03F7/004
Foreign References:
CN110054741A2019-07-26
CN109320734A2019-02-12
CN109180957A2019-01-11
CN108219158A2018-06-29
CN108384329A2018-08-10
Attorney, Agent or Firm:
COMIPS INTELLECTUAL PROPERTY OFFICE (CN)
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