Title:
POLYMER DEFOAMER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/224043
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of fine chemical formulation, and particularly relates to a polymer defoamer and a preparation method therefor. The polymer defoamer comprises an acrylate polymer, an organic solvent carrier, an inorganic filler, and a catalyst. The acrylate polymer is prepared from the following raw material components: monomer-1, monomer-2, monomer-3, an olefin, a diluent, an initiator, and a chain transfer agent. The monomer-1 is alkyl acrylate. The monomer -2 is alkyl methacrylate. The monomer-3 is hydroxyalkyl acrylate. The defoamer of the present invention uses an acrylate polymer as a main active material. The defoamer has excellent foam suppression performance, and is particularly suitable for the application in a strong base system for pulping and papermaking.
Inventors:
LIU YANG (CN)
CHEN YUJUAN (CN)
CAO TIAN (CN)
HUANG WEI (CN)
ANTHONY K DOTSE (CN)
CHEN YUJUAN (CN)
CAO TIAN (CN)
HUANG WEI (CN)
ANTHONY K DOTSE (CN)
Application Number:
PCT/CN2019/094973
Publication Date:
November 12, 2020
Filing Date:
July 08, 2019
Export Citation:
Assignee:
JIANGSU SIXIN SCIENTIFIC TECH APPLICATION RESEARCH INSTITUTE CO LTD (CN)
International Classes:
B01D19/04; C08F210/14; C08F220/14; C08F220/18; C08F220/20
Foreign References:
| CN108786188A | 2018-11-13 | |||
| CN102428142A | 2012-04-25 | |||
| CN105744998A | 2016-07-06 | |||
| US5152925A | 1992-10-06 | |||
| CN1931417A | 2007-03-21 |
Attorney, Agent or Firm:
NANJING ZHONGLIAN PATENT AGENCY CO., LTD. (CN)
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