Title:
METHOD FOR PREPARING SPHERICAL SILICONE POWDER OR AGGLOMERATES THEREOF, AND SPHERICAL SILICONE POWDER OR AGGLOMERATES THEREOF PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2020/133158
Kind Code:
A1
Abstract:
The present invention provides a method for preparing spherical silicone powder or agglomerates thereof, comprising the steps of: S1: providing an aqueous solution of an alkali metal salt of hydroxyl silicate; S2: adding acid or alkali, and finally regulating the PH of the aqueous solution to 7-13, so that the hydroxyl of silicic acid is condensed to obtain the spherical silicone powder or agglomerates thereof. The present invention also provides spherical silicone powder or agglomerates thereof obtained by the preparation method. According to the present invention, the problem of complex process or strict control in the prior art is avoided by preparing the spherical silicone powder or agglomerates thereof with the alkali metal salt of hydroxyl silicate. Specifically, according to the preparation method, the aqueous solution of the alkali metal salt of hydroxyl silicate itself is stable, and can be mixed with alkaline substances or tiny particles into composite particles, and thus has significant advantages.
Inventors:
CHEN SHUZHEN (CN)
LI RUI (CN)
LI RUI (CN)
Application Number:
PCT/CN2018/124685
Publication Date:
July 02, 2020
Filing Date:
December 28, 2018
Export Citation:
Assignee:
HUZHOU WUYAO SILICONE BASED MAT INSTITUTE CO LTD (CN)
International Classes:
C08G77/06; C08G77/04; C08G77/10
Foreign References:
| CN1693339A | 2005-11-09 | |||
| US20020016434A1 | 2002-02-07 | |||
| CN102675643A | 2012-09-19 | |||
| CN109021574A | 2018-12-18 |
Other References:
BIAN, HUIFANG: "Preparation of Methyl Silicone Microsphere and Its Effect on Performance of Polypropylene", TIANJIN CHEMICAL INDUSTRY, vol. 32, no. 1, 31 January 2018 (2018-01-31), pages 25 - 28, XP009521748, DOI: 20190920154417X
Attorney, Agent or Firm:
SHANGHAI ZHI XIN PATENT AGENT LTD. (CN)
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