Title:
NOVEL PICKERING FOAM TEMPLATING-BASED METHOD FOR PREPARING WPU SYNTHETIC LEATHER FOAMING LAYER
Document Type and Number:
WIPO Patent Application WO/2024/082209
Kind Code:
A1
Abstract:
The present invention relates to the technical field of waterborne synthetic leather manufacture, and specifically, provides a novel Pickering foam templating-based method for preparing a waterborne polyurethane (WPU) synthetic leather foaming layer. The method provided comprises: mixing a WPU emulsion and a waterborne cross-linking agent to obtain mixed WPU slurry; mixing the mixed WPU slurry and hydrophobic solid particles, and then emulsifying and dispersing the mixture to obtain Pickering water-based foam slurry; and drying the Pickering water-based foam slurry to obtain the WPU synthetic leather foaming layer. According to the preparation method provided by the present invention, polyurethane latex particles and the hydrophobic solid particles are jointly adsorbed and dried on a water-gas interface to form a double-layer solid particle film having a Janus structure, so that the obtained Pickering foam has high stability in the drying process, uniform cells, good hand feeling, good mechanical properties, and good sanitary performance.
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Inventors:
WANG CHUNHUA (CN)
LIN WEI (CN)
WEI TAO (CN)
SHENG YIFENG (CN)
WU JIANHUI (CN)
LIN WEI (CN)
WEI TAO (CN)
SHENG YIFENG (CN)
WU JIANHUI (CN)
Application Number:
PCT/CN2022/126384
Publication Date:
April 25, 2024
Filing Date:
October 20, 2022
Export Citation:
Assignee:
UNIV SICHUAN (CN)
International Classes:
C08J9/28; C08L5/08; D06N3/14
Foreign References:
| CN112625297A | 2021-04-09 | |||
| CN1406298A | 2003-03-26 | |||
| CN112626882A | 2021-04-09 | |||
| JP2015083724A | 2015-04-30 | |||
| US20210276309A1 | 2021-09-09 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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