PREPARATION METHOD FOR SUPER-HYDROPHOBIC ACRYLIC EMULSION

WIPO Patent Application WO/2022/165929

A1

A preparation method for a super-hydrophobic acrylic emulsion, comprising: fully stirring and mixing an emulsifier accounting for 3-5% of the total monomer amount and water for 15-30 minutes, then adding an acrylate monomer, a special functional monomer and a molecular weight regulator, and stirring and emulsifying same for 30-60 minutes to obtain a pre-emulsion; uniformly stirring an emulsifier accounting for 3-5% of the total monomer amount and water, adding 3% of the pre-emulsion, and dropwise adding 60% of an initiator solution at the same time for a reaction for 7-15 minutes to prepare a seed emulsion; and continuously dropwise adding the residual pre-emulsion and the initiator solution into the seed emulsion, then maintaining the temperature and then cooling same to 60ºC for post-elimination, continuously maintaining the temperature for a reaction for 1 hour after the completion of the post-elimination, cooling same to 40ºC or below, and then filtering and discharging same to obtain a super-hydrophobic acrylic emulsion. The preparation method has a simple process, the product is green and environmentally friendly, which effectively solves the problem of the water resistance of an existing acrylic resin being not good enough, and provides a good surface effect of dripping water into beads and a good water resistance effect.

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ZHOU JIANBIN (CN)
FANG YINGCHUN (CN)

PCT/CN2021/081161

August 11, 2022

March 16, 2021

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SHANGHAI BAOLIJIA NEW MAT CO LTD (CN)

C08F212/08; C08F2/26; C08F2/30; C08F2/38; C08F220/14; C08F220/18; C08F222/14

CN111269350A	2020-06-12
CN108383941A	2018-08-10
CN109369844A	2019-02-22
CN111285959A	2020-06-16
CN111285962A	2020-06-16
CN111087546A	2020-05-01
US4894397A	1990-01-16
US20140080976A1	2014-03-20

SHANGHAI LEHONG PATENT AGENCY (GENERAL PARTNERSHIP) (CN)

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