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High solid content crylic acid-sulfonate copolymer and preparation method thereof

A sulfonate copolymer, high solid content technology, applied in the field of chemical treatment, can solve the problems of difficult packaging, difficult control of on-site application, high energy consumption in storage and transportation, etc., to achieve simple packaging, easy control of on-site application, storage and The effect of reducing transportation energy consumption

Active Publication Date: 2014-11-26
JIANGSU JIANGHAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of high solid content acrylic acid-sulfonate copolymer and preparation method thereof, to overcome many deficiencies such as packaging difficulties in the prior art, high energy consumption in storage and transportation during circulation, and difficulty in field application control, etc., to meet Current industry needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Put the mixture of acrylic acid monomer and 2-acrylamido-2-methylpropanesulfonic acid with a molar ratio of 1:1 into the reaction kettle, add sodium bisulfite according to 1% of the mass of the monomer raw material, and heat up to 75 ℃, then dropwise add sodium persulfate of 5% of the total mass of monomer raw materials, and copolymerize for 6 hours to obtain a light yellow to amber transparent liquid; keep the temperature at 95°C and concentrate the above product for 8 hours to obtain a light yellow to amber viscous Liquid, the solid content is controlled at 80%; add solvent absolute ethanol to the obtained product, cool to 45°C, and continue to stir for 2 hours; then add crystal nucleus sodium acetate, cool and crystallize; centrifugal dehydration; dry to obtain the final product.

Embodiment 2

[0017] Put the mixture of acrylic acid monomer and 2-acrylamido-2-methylpropanesulfonic acid with a molar ratio of 2:1 into the reaction kettle, add sodium bisulfite according to 5% of the mass of the monomer raw material, and heat up to 70 ℃, then dropwise add sodium persulfate of 8% of the total mass of monomer raw materials, and copolymerize for 6 hours to obtain a light yellow to amber transparent liquid; keep the temperature at 90°C and concentrate the above product for 10 hours to obtain light yellow to amber viscous Liquid, the solid content is controlled at about 75%; add solvent absolute ethanol to the obtained product, cool to 50°C, and continue to stir for 3 hours; then add crystal nucleus sodium acetate, cool and crystallize; centrifugal dehydration; dry to obtain the final product.

Embodiment 3

[0019] Put the mixed solution of acrylic acid monomer and sodium 2-acrylamido-2-methylpropanesulfonate in a molar ratio of 3:1 into the reactor, add sodium bisulfite according to 5% of the mass of the monomer raw material, and heat up to 80°C, then dropwise add sodium persulfate with 10% of the total mass of monomer raw materials, and copolymerize for 6 hours to obtain a light yellow to amber transparent liquid; keep the temperature at 90°C and concentrate the above product for 10 hours to obtain light yellow to amber viscous Thick liquid, the solid content is controlled at 60%; add solvent absolute ethanol to the obtained product, cool to 40°C, and continue to stir for 3 hours; then add crystal nucleus sodium acetate, cool and crystallize; centrifugal dehydration; dry to obtain the final product.

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Abstract

The invention discloses a high solid content crylic acid-sulfonate copolymer and a preparation method thereof. The method comprises the following steps of: putting mixed liquid of crylic acid monomer and sulfonic acid containing unsaturated monomer into a reaction kettle; adding sodium bisulfite, heating, dripping an initiating agent to perform a copolymerization reaction to obtain light yellow to amber transparent liquid; keeping the temperature to be between 80 and 100 DEG C, concentrating the product to obtain light yellow to amber sticky liquid, and controlling the solid content to be between 60 and 80 percent; adding absolute ethanol into the prepared product, cooling, and keeping on stirring for 2 to 3 hours; and finally adding crystal nucleus sodium acetate, cooling and crystallizing, dehydrating, and drying. In the prepared product, the solid content is more than 95 percent, the molecular weight is between 1,500 and 20,000, the package is simple, and energy consumption in storage and transportation in transferring can be reduced, the field application can be easily controlled, and the dosage amount in use can be reduced. The high solid content crylic acid-sulfonate copolymer has excellent dispersing and scale inhibition effects to ferric ions, calcium carbonate particles and the like.

Description

technical field [0001] The present invention relates to a kind of chemical treatment field that is applied to oil field exploitation water, power plant circulating cooling water, medium and low pressure boiler water, daily chemical products, etc. Preparation. Background technique [0002] Copolymer-dispersed scale inhibitors are a new class of water treatment agents developed around the 1980s. It not only has superior performance, but also plays an important role in the development of phosphorus and molybdenum water treatment technology. Its development and application have made water treatment technology a big step forward, and become a hot spot in the research and development of water treatment agents at home and abroad. Among the many copolymer-dispersed scale inhibitors developed, the copolymer of acrylic acid-sulfonate has attracted widespread attention because of its excellent performance, and a development boom has formed at home and abroad. [0003] However, the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F220/58C08F228/02C02F5/12C02F5/10
Inventor 吴林华吴文导徐群孙伟
Owner JIANGSU JIANGHAI CHEM
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