Title:
DYE DISPERSION FOR PREPARING COLORED WASHING POWDER AND PREPARATION METHOD FOR COLORED WASHING POWDER
Document Type and Number:
WIPO Patent Application WO/2023/083238
Kind Code:
A1
Abstract:
A dye dispersion, containing a polyol and a water-soluble dye dispersed therein. Compared with other pigment dispersions, said dye dispersion causes less equipment contamination, does not easily dye the equipment, is easy to clean, effectively improves the flexibility of dye dispersion formulations, and has a lower viscosity. A method for preparing a colored washing powder, comprising the steps of: preparing a dye dispersion and uniformly spraying the dye dispersion on a washing powder base powder; the dye dispersion contains a polyol and a water-soluble dye dispersed therein. The process of the method can be provided independent of the preparation process of a conventional washing powder, and at the same time, there is no need to introduce an additional drying step to remove moisture. A use of a dye dispersion in preparing a colored washing powder, and a colored washing powder prepared by the method for preparing a colored washing powder.
Inventors:
HU HAO (CN)
Application Number:
PCT/CN2022/131024
Publication Date:
May 19, 2023
Filing Date:
November 10, 2022
Export Citation:
Assignee:
MILLIKEN ENTERPRISE MAN SHANGHAI CO LTD (CN)
International Classes:
C09B67/46; C11D7/50; C11D11/00; C11D17/06
Foreign References:
| US4150947A | 1979-04-24 | |||
| CN110846140A | 2020-02-28 | |||
| CN107043574A | 2017-08-15 | |||
| CN108624122A | 2018-10-09 | |||
| CN111117366A | 2020-05-08 | |||
| GB1513526A | 1978-06-07 | |||
| CN102792129A | 2012-11-21 | |||
| CN101831217A | 2010-09-15 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LTD. (CN)
Download PDF:
Previous Patent: GRAPH DATA MANAGEMENT
Next Patent: IMAGE DECODING METHOD AND APPARATUS, AND IMAGE ENCODING METHOD AND APPARATUS
Next Patent: IMAGE DECODING METHOD AND APPARATUS, AND IMAGE ENCODING METHOD AND APPARATUS