Title:
PREPARATION METHOD FOR DYE AND OPTICAL FILM
Document Type and Number:
WIPO Patent Application WO/2020/228191
Kind Code:
A1
Abstract:
The present invention provides a preparation method for a dye and an optical film. The method comprises: adding a rhodamine dye to thionyl chloride for reaction, and removing the thionyl chloride in a reaction solution; then adding the reactant and propenoic acid 4-hydroxy R ester to anhydrous tetrahydrofuran for reaction to obtain a second reaction solution; removing the anhydrous tetrahydrofuran in the second reaction solution; and washing the reactant with dichloromethane and methanol, and performing separation by using a chromatography column to obtain a dye monomer.
Inventors:
ZHA BAO (CN)
Application Number:
PCT/CN2019/104468
Publication Date:
November 19, 2020
Filing Date:
September 05, 2019
Export Citation:
Assignee:
SHENZHEN CHINA STAR OPTOELECT (CN)
International Classes:
C09B69/10; C09D4/02; G02B1/04
Domestic Patent References:
| WO2001007430A1 | 2001-02-01 |
Foreign References:
| CN110194901A | 2019-09-03 | |||
| CN105073801A | 2015-11-18 | |||
| US20170137628A1 | 2017-05-18 | |||
| CN109116625A | 2019-01-01 |
Attorney, Agent or Firm:
ESSEN PATENT & TRADEMARK AGENCY (CN)
Download PDF:
Previous Patent: PIXEL CIRCUIT AND OLED DISPLAY PANEL
Next Patent: GOODS RACK AND GOODS CAGE TRANSFER SHUTTLE VEHICLE AND APPLICATION THEREOF
Next Patent: GOODS RACK AND GOODS CAGE TRANSFER SHUTTLE VEHICLE AND APPLICATION THEREOF