Poly MA-AA-MAC anti-scaling agent synthesis process capable of controlling polymerization temperature
A technology of polymerization temperature and synthesis process, which is applied in the direction of scale removal and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problems of large amount of addition, limited use, high cost, etc., and reduce the production cost. Cost, improved anti-fouling performance, 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
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[0024] A kind of polyMA-AA-Mac antifouling agent synthetic technique that the present invention relates to controlled polymerization temperature comprises steps:
[0025] (a) at first, prepare maleic anhydride solution, acrylic acid solution and methyl acrylate respectively;
[0026] (b) Then, in reaction vessel, add maleic anhydride solution, acrylic acid solution and methyl acrylate;
[0027] (c) adding initiator in reaction vessel;
[0028] (d) Then start the stirring and heating device, keep the polymerization temperature at 80°C to 90°C, stir and react for a period of time, and cool naturally to obtain the target product.
[0029] The reaction vessel is a four-necked bottle with stirring device, dropping funnel, thermometer and condensing device.
[0030] The three dropping funnels were filled with acrylic acid solution, methyl acrylate and ammonium persulfate solution respectively.
[0031] In order to obtain the best polymerization temperature, the present invention ...
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Abstract
The invention discloses a poly maleic anhydride-acrylic acid-methyl acrylate (MA-AA-MAC) anti-scaling agent synthesis process capable of controlling polymerization temperature. The synthesis process comprises the following steps: (a) firstly, respectively preparing maleic anhydride solution, acrylic acid solution and methyl acrylate; (b) then, adding the maleic anhydride solution, acrylic acid solution and methyl acrylate to a reaction container; (c) adding an initiator to the reaction container; (d) starting a stirring and heating device, keeping polymerization temperature at 80-90 DEG C, stirring and reacting for a duration, and naturally cooling to obtain a target product. The synthesis process disclosed by the invention can be used for realizing rapid preparation of the MA-AA-MAC anti-scaling agent, and is simple in preparation process, high in preparation conversion rate and low in MA-AA-MAC copolymer preparation cost; the synthesis process, through controlling polymerization temperature in synthesis, enhances anti-scaling performance of the target product.
Description
technical field [0001] The invention relates to a synthesis process of polyMA-AA-Mac antiscaling agent with controlled polymerization temperature. 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. [...
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IPC IPC(8): C08F222/06C08F220/06C08F220/14C08F2/00C02F5/10
Inventor 谭勇
Owner 谭勇