Comb type polycarboxylate dispersing agent containing polyether side chain and preparation method of comb type polycarboxylate dispersing agent
The invention provides a comb type polycarboxylate dispersing agent containing a polyether side chain and a preparation method of the comb type polycarboxylate dispersing agent. The dispersing agent is prepared from the following components in parts by mass: 4-50 parts of allyl polyoxyethylene ether...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
29.10.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a comb type polycarboxylate dispersing agent containing a polyether side chain and a preparation method of the comb type polycarboxylate dispersing agent. The dispersing agent is prepared from the following components in parts by mass: 4-50 parts of allyl polyoxyethylene ether, 1-10 parts of an acrylic acid homologue and 1-10 parts of acrylate. The preparation method comprises the steps of (1), adding a certain amount of a chain transfer agent, water and methyl alcohol to a reaction vessel, mixing, and heating to more than 90 DEG C; (2), dropwise adding a mixed solutionof the allyl polyoxyethylene ether, the acrylic acid homologue the acrylate and the certain methyl alcohol to the reaction vessel by a constant flow pump; dropwise adding an initiator aqueous solutionto a reaction bulb by another constant flow pump; and overhead controlling dropwise adding time for 1-2 hours, and after dropwise adding, keeping warm for 2-3 hours; and (3), cooling to a room temperature, neutralizing ph to |
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Bibliography: | Application Number: CN201910741657 |