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Alkenyl polyoxyethylene ether/maleic anhydride/acrylic acid copolymer and preparation method and application thereof

A technology of alkenyl polyoxyethylene ether and acrylic acid copolymer, which is applied in the field of alkenyl polyoxyethylene ether/maleic anhydride/acrylic acid copolymer and its preparation, can solve problems such as poor scale inhibition effect, and achieve environmental protection in the preparation process , easy to operate, overcome the effect of high phosphorus content

Active Publication Date: 2015-01-07
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The object of the present invention is to provide a kind of silicon dioxide and silicic acid has stabilizing, dispersing and compatibilizing effect, to overcome the problem that the existing organophosphine scale inhibitor has poor scale inhibition effect on silica scale, effectively Alkenyl polyoxyethylene ether / maleic anhydride / acrylic acid copolymer as antiscalant for inhibiting silica deposition in water

Method used

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  • Alkenyl polyoxyethylene ether/maleic anhydride/acrylic acid copolymer and preparation method and application thereof
  • Alkenyl polyoxyethylene ether/maleic anhydride/acrylic acid copolymer and preparation method and application thereof
  • Alkenyl polyoxyethylene ether/maleic anhydride/acrylic acid copolymer and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0037] The structural formula of the alkenyl polyoxyethylene ether / maleic anhydride / acrylic acid copolymer of the present embodiment is such as formula (1), and M in formula (1) 1 , M 2 , M 3 , M 4 It can be any of hydrogen atoms, sodium ions, and ammonium ions, which are randomly combined according to the principle of charge balance;

[0038] R 1 for H, R 2 for H, R 3 for CH 3 ;

[0039] n represents the average degree of polymerization, n is 7, x is the mole percentage of isobutylene alcohol polyoxyethylene ether, y is the mole percentage of maleic anhydride, z is the mole percentage of acrylic acid, and x+y+z=100%, and x is 3.6%, y is 32.4%, and z is 64.0%.

[0040]The viscosity of the copolymer is 12.5mPa.s, and the solid content is 32.3%. The number average molecular weight of the block copolymer is about 3462 and the polydispersity index is 1.23 when tested by Waters-Breeze gel permeation chromatography.

[0041] The copolymer is prepared by the following method...

Embodiment 2

[0048] The structural formula of the alkenyl polyoxyethylene ether / maleic anhydride / acrylic acid copolymer of the present embodiment is such as formula (1), and M in the formula 1 , M 2 , M 3 , M 4 It can be any of hydrogen atoms, sodium ions, and ammonium ions, randomly combined according to the principle of charge balance;

[0049] R 1 for H, R 2 for H, R 3 for CH 3 ;

[0050] n represents the average degree of polymerization, n is 16, x is the mole percentage of isobutenol polyoxyethylene ether, y is the mole percentage of maleic anhydride, z is the mole percentage of acrylic acid, and x+y+z=100%, and is 2.2%, 39.4% for y, and 58.4% for z.

[0051] The viscosity of the copolymer is 13.8mPa.s, and the solid content is 35.0%. The number average molecular weight of the block copolymer is about 4754 and the polydispersity index is 1.29 when tested by a Waters-Breeze type gel permeation chromatography.

[0052] The copolymer is prepared by the following method:

[0053...

Embodiment 3

[0059] The structural formula of the alkenyl polyoxyethylene ether / maleic anhydride / acrylic acid copolymer of the present embodiment is such as formula (1), and M in the formula 1 , M 2 , M 3 , M 4 It can be any of hydrogen atoms, sodium ions, and ammonium ions, randomly combined according to the principle of charge balance;

[0060] R 1 for CH 3 , R 2 for CH 3 , R 3 for H;

[0061] n represents the average degree of polymerization, n is 7, x is the mole percentage of isopentenol polyoxyethylene ether, y is the mole percentage of maleic anhydride, z is the mole percentage of acrylic acid, and x+y+z=100%, And x is 10.2%, y is 44.4%, and z is 45.4%.

[0062] The viscosity of the copolymer is 12.6mPa.s, and the solid content is 33.4%. The number average molecular weight of the block copolymer is about 3981 and the polydispersity index is 1.21 when tested by Waters-Breeze gel permeation chromatography.

[0063] The copolymer is prepared by the following method:

[0064]...

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Abstract

The invention relates to an alkenyl polyoxyethylene ether / maleic anhydride / acrylic acid copolymer and a preparation method and application thereof. The structural formula is as shown in formula (1), maleic anhydride, acrylic acid and alkenyl polyoxyethylene ether are taken as monomers for polymerization according to a certain molar ratio, and carboxylic acid group and ethylene oxide repeating units are introduced, so that the copolymer contains a polyether group with relatively strong hydrophilicity and a large number of carboxylate ions capable of effectively chelating calcium and magnesium ions, is a novel water treatment agent, has the effects of stabilizing, dispersing and compatibilizing silicon dioxide and silicic acid, overcomes the problem that an existing organic phosphorus scale inhibitor has a poor scale inhibition effect against silicon dioxide scale and simultaneously overcomes the problems that an existing medicament formula has relatively high content of phosphorus and is easy to cause eutrophication of a water body; in addition, the preparation process is environment-friendly, the synthesis process adopts a water solution for polymerization, and the reaction process adopts a 'one-pot boiling' way, so that the preparation method is simple and convenient to operate, low in production cost and suitable for industrial application.

Description

technical field [0001] The invention belongs to the technical field of chemical material research, and in particular relates to an alkenyl polyoxyethylene ether / maleic anhydride / acrylic acid copolymer and its preparation method and application. Background technique [0002] my country is a water-poor country. China's total water resources account for 6% of global water resources, ranking fourth in the world after Brazil, Russia and Canada. However, the per capita water resources rarely account for 1 / 4 of the world's per capita, and it is regarded as one of the 13 countries with the poorest per capita water resources in the world. Although my country is short of water resources, it is a country with a large industrial water consumption. The total amount of industrial water consumption is increasing year by year, and the proportion of the total water consumption in the country is also increasing year by year. my country is listed as one of the water-poor countries in the worl...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/06C08F222/14C02F5/10
Inventor 张国辉杨鸿鹰王丽莉张哲温涛高小媛郭一平
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND