INVERT EMULSION HAVING DOUBLE PARTICLE SIZE DISTRIBUTION, PREPARATION METHOD THEREFOR AND USE THEREOF
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United States of America Patent
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Feb 29, 2024
app pub date -
Apr 12, 2021
filing date -
Dec 16, 2020
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Abstract
An invert 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. A 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.
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