Title:
PREPARATION METHOD FOR THERMALLY EXPANDABLE MICROSPHERES CONTAINING HYDROPHILIC ORGANIC MODIFIED COLLOIDAL SILICON DIOXIDE
Document Type and Number:
WIPO Patent Application WO/2024/021307
Kind Code:
A1
Abstract:
The present application provides a preparation method for thermally expandable microspheres containing hydrophilic organic modified colloidal silicon dioxide. The preparation method uses hydrophilic organic modified colloidal silicon dioxide and mixes same with a mixture of a monomer material capable of being polymerized to form a thermoplastic polymer shell and at least one foaming agent to form an emulsion, and the emulsion forms the thermally expandable microspheres by means of polymerization. In the present application, the colloidal silicon dioxide surface-modified with a hydrophilic organic group has good salt tolerance and stability, and is capable of being stable in saline water and facilitating the preparation of the thermally expandable microspheres. The microspheres obtained by preparation have a narrow particle size distribution and may be easily dispersed in both aqueous and organic systems, demonstrating good wetting properties. The invention further relates to thermally expandable microspheres and a use thereof.
Inventors:
LU HANG (CN)
ZHENG CONGGUANG (CN)
QIN DIANBIN (CN)
ZHANG SHU (CN)
JI XUESHUN (CN)
CHEN JIALE (CN)
SUN ZHIPENG (CN)
ZHENG CONGGUANG (CN)
QIN DIANBIN (CN)
ZHANG SHU (CN)
JI XUESHUN (CN)
CHEN JIALE (CN)
SUN ZHIPENG (CN)
Application Number:
PCT/CN2022/123254
Publication Date:
February 01, 2024
Filing Date:
September 30, 2022
Export Citation:
Assignee:
WANHUA CHEMICAL GROUP CO LTD (CN)
International Classes:
C08L33/18; B01J13/14; C08F214/22; C08F220/06; C08F220/14; C08F220/18; C08F220/42; C08F220/44; C08F220/56; C08F222/14; C08F222/20; C08F222/26; C08J9/16; C08K3/36; C08K9/04; C08K9/06; C08L33/12; C08L33/20; C08L33/26
Domestic Patent References:
| WO2020229406A1 | 2020-11-19 | |||
| WO2016026464A1 | 2016-02-25 |
Foreign References:
| CN102702449A | 2012-10-03 | |||
| US20190233606A1 | 2019-08-01 | |||
| CN111194239A | 2020-05-22 | |||
| CN109705392A | 2019-05-03 | |||
| US20200347197A1 | 2020-11-05 | |||
| CN108314756A | 2018-07-24 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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