Title:
METHOD FOR IMPROVING SOLUBILITY AND DISSOLUTION RATE OF DYE CHEMICAL IN SUPERCRITICAL CARBON DIOXIDE FLUID
Document Type and Number:
WIPO Patent Application WO/2023/179105
Kind Code:
A1
Abstract:
The present invention relates to a method for improving the solubility and dissolution rate of a dye chemical in a supercritical carbon dioxide fluid, which method comprises: first raising the temperature to a target temperature above the melting point of a dye chemical, so as to melt the dye chemical; then mixing a flowing supercritical carbon dioxide fluid having an initial temperature with the molten dye chemical at a certain mass ratio; and then cooling the supercritical carbon dioxide fluid with the dye chemical dissolved therein to the initial temperature, and cyclically repeating the mixing and cooling processes and maintaining same for a certain period of time, wherein all the temperature conditions during the process of cyclically repeating same are kept consistent with the previous temperature conditions, the dye chemical is a dye and/or functional auxiliary agent, the initial temperature is lower than the target temperature, and the pressure of the supercritical carbon dioxide fluid is always kept consistent. In the present invention, the solubility and the dissolution rate of the dye chemical in supercritical carbon dioxide are improved, no other co-solvents need to be added, no harm is caused to the human body, and the problem of the separation and removal of co-solvents also does not need to be taken into consideration.
Inventors:
WU WEI (CN)
MAO ZHIPING (CN)
GE HUAIFU (CN)
XU HONG (CN)
ZHONG YI (CN)
WANG JIAN (CN)
YANG WEIDONG (CN)
WAN GANG (CN)
GUO KUN (CN)
LIN DAPENG (CN)
WANG DAWEI (CN)
MAO ZHIPING (CN)
GE HUAIFU (CN)
XU HONG (CN)
ZHONG YI (CN)
WANG JIAN (CN)
YANG WEIDONG (CN)
WAN GANG (CN)
GUO KUN (CN)
LIN DAPENG (CN)
WANG DAWEI (CN)
Application Number:
PCT/CN2022/138006
Publication Date:
September 28, 2023
Filing Date:
December 09, 2022
Export Citation:
Assignee:
UNIV DONGHUA (CN)
QINGDAO JIFA GROUP CO LTD (CN)
QINGDAO JIFA GROUP CO LTD (CN)
International Classes:
D06B23/20; D06B9/02; D06B23/22
Foreign References:
| CN114606692A | 2022-06-10 | |||
| US5958085A | 1999-09-28 | |||
| CN106093309A | 2016-11-09 | |||
| CN110667025A | 2020-01-10 | |||
| US11136438B2 | 2021-10-05 | |||
| JP2005103461A | 2005-04-21 | |||
| US6261326B1 | 2001-07-17 | |||
| US20200063338A1 | 2020-02-27 |
Attorney, Agent or Firm:
TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)
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