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Synthetic process of poly MA-AA-Mac (Maleic Anhydride-Acrylic Acid-Methyl Acrylate) anti-scale agent through control of reaction time

A technology of reaction time and synthesis process, applied in the direction of scale removal and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high cost, limited use, and large amount of addition, and achieve reduction The effect of preparation cost, improvement of anti-scaling performance, and simple preparation process

Inactive Publication Date: 2014-05-21
谭勇
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Problems solved by technology

This kind of descaling agent mainly prevents scale through chelation, so the amount added is large and the cost is high, so its use is limited in industrial processes with large amounts of water

Method used

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  • Synthetic process of poly MA-AA-Mac (Maleic Anhydride-Acrylic Acid-Methyl Acrylate) anti-scale agent through control of reaction time

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Embodiment

[0023] A kind of polyMA-AA-Mac antifouling agent synthetic technique that the present invention relates to controlled reaction time, comprises steps:

[0024] (a) at first, prepare maleic anhydride solution, acrylic acid solution and methyl acrylate respectively;

[0025] (b) Then, in reaction vessel, add maleic anhydride solution, acrylic acid solution and methyl acrylate;

[0026] (c) adding initiator in reaction vessel;

[0027] (d) Then start the stirring and heating device, keep the stirring reaction at a constant temperature for 3h-6h, then stop, and cool naturally to obtain the target product.

[0028] The reaction vessel is a four-necked bottle with stirring device, dropping funnel, thermometer and condensing device.

[0029] The three dropping funnels were filled with acrylic acid solution, methyl acrylate and ammonium persulfate solution respectively.

[0030] In order to obtain the best initiator consumption, the present invention has done the comparative experim...

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Abstract

The invention discloses a synthetic process of a poly MA-AA-Mac (Maleic Anhydride-Acrylic Acid-Methyl Acrylate) anti-scale agent through control of reaction time. The synthetic process comprises the following steps: (a) firstly, preparing a maleic anhydride solution, an acrylic acid solution and methyl acrylate respectively; (b) subsequently, adding the maleic anhydride solution, the acrylic acid solution and the methyl acrylate into a reaction container; (c) adding an initiator into the reaction container; and (d) then starting a stirring and heating device to stir and react for 3-6 hours at constant temperatures, then stopping and naturally cooling to obtain a target product. The synthetic process of poly MA-AA-Mac anti-scale agent through control of reaction time is capable of quickly preparing a poly MA-AA-Mac anti-scale agent, simple in preparation process, high in preparation conversion rate, capable of reducing preparation cost of a maleic anhydride-acrylic acid-methyl acrylate copolymer and controlling reaction time in the synthetic process so as to improve the anti-scale performance of the target product.

Description

technical field [0001] The invention relates to a synthesis process of a polyMA-AA-Mac antiscaling agent with controlled reaction time. Background technique [0002] Descaling agent is a chemical preparation that removes scale, dirt and other stains, and is generally composed of multiple components. Industrial descaling agents are mainly used to remove dirt in heat exchange equipment, boilers, etc. [0003] Common types of descaling agents and their characteristics: [0004] (1) Inorganic polyphosphate. This type is the earliest descaling agent used, and its use has been restricted abroad. There are one or more repeated P-O-P bonds in its molecule, which can be divided into chain polyphosphate and cyclic polyphosphate. The disadvantage of inorganic polyphosphate is that it is easy to be hydrolyzed by moisture to form orthophosphate, especially at high temperature and high pH value, and it will react with divalent cations such as Ca2+, Mg2+, etc. to scale. [0005] (2) O...

Claims

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Application Information

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IPC IPC(8): C08F222/06C08F220/06C08F220/14C08F2/00C02F5/10
Inventor 谭勇
Owner 谭勇
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