Itaconic acid copolymer antisludging agent and microwave synthetic method thereof

A synthesis method and antiscalant technology are applied in the field of novel itaconic acid copolymer antiscalant and its microwave synthesis, which can solve the problems of increasing the production cost of the copolymer, hindering industrial production, and the high price of acrylic acid, so as to avoid water body enrichment. Troubleshooting problems, fast synthesis speed, and high scale inhibition rate

Inactive Publication Date: 2012-06-27
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

In the prior art, Wang Guangjiang et al. have studied the synthesis process of itaconic acid (IA)-acrylic acid (AA) binary copolymer aqueous solution and the effect on CaCO 3 The scale inhibition effect, the experimental results show that the IA-AA copolymer on CaCO 3 The anti-scaling effect is good, and the adaptable temperature range is wide, and the significant anti-scaling effect can be obtained when the amount of the copolymer is small, but the price of acrylic acid is expensive in the experiment, which increases the production cost of the copolymer
Chinese Patent Publication No. CN03112046.6 has synthesized itaconic acid, (methyl) propylene sulfonate, (meth)acrylic acid hydroxy ester multi-polymer scale inhibitor, which has good scale inhibition effect and is widely used, but the process is more complicated , takes a long time and consumes a lot of energy, which hinders its industrial production
Compared with the traditional method, microwave radiation heating can increase the reaction rate by thousands of times, and the operation is convenient. At present, there are few patent reports on the microwave synthesis technology of itaconic acid copolymer scale inhibitor, and people are interested in the synthesis of itaconic acid, malay Anhydride and sulfonate copolymers have not been reported in the literature

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  • Itaconic acid copolymer antisludging agent and microwave synthetic method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: (according to every part of 1 / 10g meter in parts by mass)

[0033] In there-necked flask, add 6.0g itaconic acid, 0.9g maleic anhydride, and a certain amount of sodium propylene sulfonate, the stoichiometric ratio of each component is shown in Table 1 (the proportioning of these three kinds of raw materials is monomer proportioning), Dissolve in 10mL of deionized water, add 0.1g of catalyst ferrous ammonium sulfate, place it under a microwave field of 2450MHz (XH-100A computer microwave catalytic / synthetic extraction instrument), microwave power is 700W, slowly drip at a certain rate Add 0.5g initiator (mass ratio is the mixture of 1: 1 hydrogen peroxide (30%) and sodium bisulfite (30%)) and 1.5g chain transfer agent isopropanol, apply microwave synthesis technology, stir, reflux, The microwave irradiation time was 30 min, and the reaction temperature was 70° C. to obtain a pale yellow transparent solution. Add 150 mL of acetone to the product and wash it...

Embodiment 2

[0038]Embodiment 2: (according to every part of 1 / 10g of mass parts)

[0039] Add 6.0g of itaconic acid, 0.9g of maleic anhydride and 1.0g of sodium methylpropene sulfonate into a three-necked flask, dissolve them in 10mL of deionized water, add 0.1g of catalyst ferrous ammonium sulfate, and place it in a microwave at 2450MHz Under the field (same as above), the microwave power is 700W, and a certain amount of initiator (a mixture of hydrogen peroxide (30%) and sodium bisulfite (30%) with a mass ratio of 1:1) and 1.2 g chain transfer agent isopropanol, the amount of initiator added is shown in Table 2, using microwave synthesis technology, stirring, reflux, microwave irradiation time is 40min, reaction temperature is 80°C, and a light yellow transparent solution is obtained. Add 100 mL of acetone to the product and wash it 4 times, then distill under reduced pressure to separate the remaining part of the chain transfer agent, cool to room temperature and discharge to obtain th...

Embodiment 3

[0044] Embodiment 3: (according to every part of 1 / 10g meter in parts by mass)

[0045] Add 6.0g of itaconic acid, 0.9g of maleic anhydride and 1.0g of sodium ethyl propylene sulfonate to a three-necked flask, dissolve them in 10mL of deionized water, add 0.1g of catalyst ferrous ammonium sulfate, and place it in a microwave at 2450MHz Under the field (same as above), the microwave power is 800W, and the initiator (mass ratio is 1: 1 mixture of hydrogen peroxide (30%) and sodium bisulfite (30%)) and A certain amount of chain transfer agent isopropanol, the amount of chain transfer agent added is shown in Table 3, using microwave synthesis technology, stirring, reflux, microwave irradiation time is 50min, reaction temperature is 60°C, and a light yellow transparent solution is obtained. Add 150 mL of acetone to the product and wash it 3 times, then distill under reduced pressure to separate the remaining part of the chain transfer agent, cool to room temperature and discharge t...

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Abstract

The invention discloses a novel itaconic acid copolymer antisludging agent and a microwave synthetic method thereof. The antisludging agent comprises a chain link structure shown in the formula [I]. The synthetic method comprises the following steps of: using the itaconic acid as a main raw material; and carrying out copolymerization on the itaconic acid, maleic anhydride, sulfonate and the like in the presence of an initiator to prepare a terpolymer. The molecular weight of the itaconic acid copolymer prepared by the invention is 2,000-3,000, and the color of the copolymer is light yellow orbrown yellow. The novel itaconic acid copolymer antisludging agent belongs to an environment-friendly chemical-industrial product, and can be used as an antisludging agent, an anti-corrosion agent, adispersing agent and the like. The invention has the advantages of simple process, high synthesis speed, low energy consumption and less pollution.

Description

technical field [0001] The invention belongs to the technical field of polymers and water treatment, and in particular relates to a novel itaconic acid copolymer scale inhibitor and a microwave synthesis method thereof. Background technique [0002] Rapidly developing industries mostly require circulating cooling water. Scaling in industrial water systems seriously affects heat transfer efficiency, increases energy consumption, and accelerates equipment corrosion. Due to the increasing shortage of fresh water resources, the antiscaling treatment of industrial water has been paid more and more attention. Adding antiscalant for antiscaling treatment is a relatively convenient and efficient method among many antiscaling methods. Natural polymer scale inhibitors have a wide range of sources, are cheap and easy to obtain, but have poor scale inhibition effects and high impurity content; phosphorus scale inhibitors have better scale inhibition effects, but they are likely to caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/10C08F222/02C08F2/46
CPCC08F2/10
Inventor 董社英钮丽
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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