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Synthesis method and application of 2-acrylamide-2-methylpropanesulfonic acid

Sep. 05, 2019

2-Acrylamide-2-methylpropanesulfonic acid (AMPS) is a white crystal mainly used in the paper industry and wastewater treatment. Used as paint modifiers, fiber modifiers and medical polymers. There are many ways to synthesize it.

The AMPS synthesis mainly uses acrylonitrile, isobutylene and fuming sulfuric acid as raw materials, and adds fuming sulfuric acid to the mixture of acrylonitrile and isobutylene, and directly reacts in the presence of various additives to obtain a finished product.

2-Acrylamide-2-methylpropanesulfonic acid is widely used in petroleum, water treatment, synthetic fiber, papermaking and other industries.

Oil industry

Polyacrylamide is an important oilfield chemical, but its shear stability is poor, mechanical degradation is serious when pumping; salt tolerance is poor, precipitation is easy; high temperature and acid resistance are poor. Therefore, polyacrylamide modification has become a research hotspot in the petroleum field. The study found that AMPS is very effective as a modifying monomer. AMPS is made of methacrylic acid and acrylamide as a ternary copolymer for cementing cement admixture. It can be used for high temperature retardation and can be used in high temperature and high salt environment; and N, N-dimethyl acrylamide Copolymer can be used as oil well cement slurry water loss agent; graft copolymer with calcium lignosulfonate and acrylamide, it is very excellent cement dispersant, early strength agent, reinforcing agent; AMPS and acrylic acid, tetrahydrobenzoic acid Graft copolymerization of lignin sulfonic acid, etc., can prepare drilling fluid dispersant and stabilizer with good calcium resistance, viscosity reducer, fluid loss additive, etc.; block copolymer of AMPS and N-vinylpyrrolidone, as The tackifier for tertiary oil recovery does not degrade under high temperature, high pressure and high shear conditions, and has good stability. At present, AMPS as an effective modified monomer has penetrated into the polymer modification of various fields of oilfield chemicals, which has solved the three difficult problems of salt resistance, high temperature resistance and shear resistance in oil recovery polymers. The largest market for AMPS in China is tertiary oil recovery in oil fields, as drilling fluids, completion fluids and fracturing fluids.

Water treatment industry

About one-third of the world's AMPS monomers are currently used in the water treatment industry. a homopolymer of AMPS or a copolymer with a monomer such as acrylamide or acrylic acid, which can be used as a sludge dehydrating agent in a sewage purification process; as a preservative for iron, zinc, aluminum, copper and alloy in a closed water circulation system; Descaling agents, scale inhibitors, etc., which can be used for heaters, cooling towers, air purifiers and gas purifiers. A large number of uses have shown that the use of AMPS as a treating agent is less, and the effect is superior to the existing polyacrylamide water treating agent.

Synthetic fiber industry

The copolymerization of AMPS and acrylonitrile can significantly improve the dyeing function of acrylic fiber and acrylate synthetic fiber. It has good performance as a synthetic fiber dyeing propellant, which can improve the hygroscopicity, heat resistance and antifouling property of synthetic fiber and make it have ion exchange. Sexuality also improves fiber feel and strength. AMPS also has a significant improvement in dyeing effect on polyester, polyamide, polypropylene, and polyvinylidene.

Paper industry

The water-soluble polymer containing AMPS can be used as a paper reinforcing agent, a fine pulp and an agent for improving the utilization ratio of the filler, a slurry dispersing agent, a paper peeling improver, and the like in the process of making a nonwoven fabric such as paper. In the paper production process, AMPS can be used to improve the retention of filler and pulp debris, and to increase the rate of dewatering of the slurry.

Coating industry

AMPS is a performance improver for modifiers, adhesives and finishes in the coatings industry. The AMPS copolymer is used as a base resin for acrylic anionic electrophoretic paints or cured coatings, which can significantly improve the gloss, strength and weather resistance of the coating film. The heated molten mixture of AMPS and polyol is a hot melt adhesive. The water-soluble polymer obtained by copolymerizing AMPS with a vinylidene chloride-acrylic resin is coated on the polyolefin film to improve the heat-resistant sealing property.

Medicine and daily chemical industry

The hollow fiber is obtained by copolymerization of AMPS and acrylonitrile, which can be used for hemodialysis, and can also be used to improve the treatment of thrombotic diseases; the polymer prepared by crosslinking AMPS and dimethyl methacrylate can be used as a high-quality material for contact lenses; AMPS copolymer The aqueous solution or the ethanol solution can be used as an adhesive liquid for medical electrodes, and is characterized in that it has good electrical conductivity and does not harm the skin. Further, the homopolymer of AMPS can be used as a thickener such as a cream or a lipstick, a lubricant, or the like in cosmetics.

The above is an overview of the application and synthesis of 2-acrylamide-2-methylpropanesulfonic acid. Haihang industry now sells 2-acrylamide-2-methylpropanesulfonic acid. If you have any needs, please feel free to contact us!

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