Title:
INVERT EMULSION HAVING DOUBLE PARTICLE SIZE DISTRIBUTION, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/126941
Kind Code:
A1
Abstract:
An invert phase emulsion having double particle size distribution, the invert emulsion having a particle size distribution of latex particles between 20 nm and 70 nm and between 100 nm and 500 nm in the same invert emulsion system. The preparation method for an invert emulsion comprises: forming an emulsion A and an emulsion B having different particle sizes by controlling an emulsifier system and an emulsification means, and preparing in one step an invert emulsion the particle size of which has bimodal distribution by means of a three-stage polymerization reaction between the emulsion A and the emulsion B in the same system. The invert emulsion is used as a water treatment flocculant, a sludge dewatering agent and a papermaking auxiliary agent, and in particular, the sludge dewatering agent fabricated from the invert emulsion is used for dewatering sludge. Only the invert emulsion is used, and other inorganic conditioners or various organic conditioners are not needed to achieve a filter cake water content of below 50% after sludge dehydration dewatering, and the present invention has the advantages of having high solid content, low consumption, fast dissolution, being convenient to use and so on.
Inventors:
HE GUOFENG (CN)
LIU ZHUQING (CN)
LIU QIANG (CN)
WANG QIN (CN)
ZHOU TAO (CN)
YIN SULING (CN)
LIU ZHUQING (CN)
LIU QIANG (CN)
WANG QIN (CN)
ZHOU TAO (CN)
YIN SULING (CN)
Application Number:
PCT/CN2021/086609
Publication Date:
June 23, 2022
Filing Date:
April 12, 2021
Export Citation:
Assignee:
JIANGSU FEYMER TECH CO LTD (CN)
International Classes:
C08F220/34; C02F1/56; C02F11/147; C08F2/32; C08F4/40; C08F226/02
Foreign References:
| CN112521547A | 2021-03-19 | |||
| US20100227965A1 | 2010-09-09 | |||
| CN101240044A | 2008-08-13 | |||
| CN109666097A | 2019-04-23 | |||
| US5093009A | 1992-03-03 |
Attorney, Agent or Firm:
CHANGZHOU YIRUI PATENT AGENCY CO., LTD. (CN)
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