Synthesis process of acid liquor thickening agent on basis of control of PH value of reaction system

A technology of acid thickener and reaction system, which is applied in the direction of coating, etc., can solve the problems of low industrial concentration and lack of economies of scale, and achieve the effects of low synthesis cost, short synthesis time and simple operation

Inactive Publication Date: 2013-04-17
何阳
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Problems solved by technology

[0019] Studies have shown that in my country's thickener enterprises, the industry concentration has always been low, and the lack of economies of scale

Method used

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  • Synthesis process of acid liquor thickening agent on basis of control of PH value of reaction system

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Embodiment

[0045] The acid liquid thickener synthesis process based on the control reaction system pH value that the present invention relates to, its concrete steps are as follows:

[0046] (a) at first, carry out the purification of reaction monomer;

[0047] (b) preparation of initiator solution;

[0048] (c) according to proportioning, take the 2-methyl-2-acrylamidopropanesulfonic acid solid of certain quality and be dissolved in distilled water;

[0049] (d) adding a certain amount of acrylic acid and dimethyl diallyl ammonium chloride to the solution of step (c), and fully dissolving the three reaction monomers;

[0050] (e) After mixing evenly, adjust the pH value of the solution to 6-8;

[0051] (f) then move the reaction mixed solution into a constant temperature reaction vessel, exhaust oxygen and stir;

[0052] (g) adding the initiator solution dropwise;

[0053] (h) Finally, under the protection of an inert gas, the reaction system is heated to perform a polymerization re...

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Abstract

The invention discloses a synthesis process of an acid liquor thickening agent on the basis of control of the PH value of a reaction system. The synthesis process comprises the steps of: a, purifying a reaction monomer; b, preparing an initiating agent solution; c, weighing a defined amount of 2-methyl-2-acrylamide propanesulfonic acid solid, and dissolving the solid; d, adding and fully dissolving crylic acid and dimethyl diallyl ammonium chloride; e, regulating the PH value of the solution to be 6-8; f, transferring the mixed solution into a container, exhausting oxygen and stirring; g, adding the initiating agent solution; and h, heating a reaction system for carrying out a polymerization reaction to obtain a target product. The synthesis process is capable of successfully synthesizing the acid liquor thickening agent, and has the advantages of simple steps, simplicity in operation, short synthesis time, high synthesis efficiency and low synthesis cost; various performance parameters of the synthesized acid liquor thickening agent are superior to those of the existing acid liquor thickening agent; and through controlling the PH value of the reaction system, the transformation rate and the intrinsic viscosity of the target product are increased.

Description

technical field [0001] The invention relates to a synthesis process of an acid liquid thickener based on controlling the pH value of a reaction system. Background technique [0002] Thickener is a kind of rheological additive, which can not only thicken the coating and prevent sagging during construction, but also endow the coating with excellent mechanical properties and storage stability. It is a very important class of additives for water-based paints with low viscosity. [0003] At present, there are many kinds of thickeners available in the market, mainly including inorganic thickeners, celluloses, polyacrylates and associative polyurethane thickeners. Cellulosic thickeners have a long history of use and there are many varieties, including methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, etc., which used to be the mainstream of thickeners. The most commonly used of these is hydroxyethyl cellulose. Polyacrylate thicken...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F226/02C08F220/58C08F2/10C09D7/12
Inventor 何阳
Owner 何阳
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