CAS number：9003-01-4
molecular formula：C5H10O2
molecular weight：102.1317
EINECS number：618-347-7

English synonyms

940;Carbopol®;ACRYLIC ACID POLYMER;CARBOPOL(TM) 941;CARBOPOL(R) 940;CARBOPOL(TM) 940;CARBOPOL(TM) 934;CARBOPOL(TM) 910

Related categories

Polymer dispersants; chemical additives; water treatment chemicals; scale inhibitors and dispersants; vitamins and amino acids; pharmaceutical raw materials; daily chemical emulsifiers; pharmaceutical gels; polymer materials; medical sutures and biopolymers; medical high Molecules; Leather Chemicals; Finishing Agents; Polymer Science; Water Treatment Agents; APIs; Hydrophilic Polymers; Other Pharmaceuticals; External Skin Materials; Agricultural Materials; Organic Chemical Materials; Surfactants; Synthetic Intermediates; Japanese Chemical raw materials;Polymer dispersant;Cnbio;Acrylates: Poly(acrylic acid) and Related Polymers;Acrylics;Hydrophilic Polymers;Acrylates: Poly(acrylic acid) and Related Polymers;Hydrophilic Polymers;Materials Science;Polymer Science;solvent;fine chemicals;Pharmaceuticals Excipients; chemical reagents; other biochemical reagents; organic chemical raw materials; biochemical reagents-other chemical reagents; cosmetic raw materials; silicone oil; cosmetic; carbomer; chemical industry; raw materials; chemical materials; liquid chemicals; organic intermediates; daily chemicals Products;Daily Chemicals;Polymer Materials-Hydrophilic Polymers;Cell-Cell Lines;Chemical Materials;Chemical Intermediates;Reagents;Industrial/Fine Chemicals;Polymers;9003-01-4

Introduction

Acrylic resin (MethylMethacrylate Resin), commonly known as plexiglass, is a polymer compound polymerized by methyl methacrylate. Commonly used synthetic methods are anionic polymerization, solution polymerization, bulk polymerization, suspension polymerization four polymerization methods. In addition, the resin has excellent characteristics such as easy coloring, light weight, not easy to break, and good processing performance. Therefore, it is often used as a substitute for glass, optical lenses, lenses, etc. In addition, with the development of acrylic resins and their modified polymers, acrylic resins are also widely used in pharmaceutical preparations and coatings.

Chemical properties

Because the structure of acrylic resin determines the performance, and because the application performance of conventional acrylic resin has certain defects in specific occasions, the modification of the structure has become the basic way to broaden the application of acrylic resin in recent years. Among them, epoxy modification has become one of the simplest and most direct methods. In the synthesis technology of epoxy modified acrylic resin, core-shell hybrid structure, interpenetrating polymerization, microemulsion polymerization, etc. are currently used. , The modified film-forming resin has excellent kinetic properties, solvent resistance and acid and alkali resistance. 

Use

●  Used as scale inhibitor and dispersant in industrial water treatment. Compatibility is good. It can also be used for pre-treatment of drinking water. Used to separate red mud in the preparation of alumina. Used in chlor-alkali plants to refine brine.

●  It is used to prepare the finishing agent for leather and some high-end commodities, and to prepare acrylic resin paint, etc.

●  Used to fix chromium salts, assist tanning, reduce chromium pollution, etc.

●  Used to improve the processability of PVC

●  Used as corrosion and scale inhibitor, water stabilizer, quencher, thickener, etc.

●  Used as leather finishing filler, textile sizing and water stabilizer

●  For the manufacture of acrylic resin paints

●  It can be used as a film-forming agent and adhesive in leather finishing agents, and also used to make polyacrylic resin latex paint, etc.

●  It is widely used in the decoration of light leather such as face leather, garment leather, glove leather, etc. It can enhance the bending resistance, extensibility, light resistance, aging resistance, cold resistance and heat resistance of the leather. Modified film formers.

●  It is mostly used in the manufacture of cosmetics. It can be used as an ointment to promote the absorption of Griseofulvin mold, and it can also be used to control the release of drugs.

Production method

●  Add 530kg of deionized water to the polymerization kettle, add 41kg of peregal OS-15 and stir to dissolve. Then 4kg of sodium lauryl sulfate was added, and after stirring and dissolving, 68kg of mixed monomers (butyl acrylate, acrylonitrile) were added within 20min. After stirring for 15 minutes, add 30 kg of 1.5% ammonium persulfate aqueous solution, and finish adding within 30 minutes. After continuing to stir for 15 min, the temperature was slowly raised to 70 °C, and the mixed monomer (272 kg) was added dropwise, and the drop was completed in about 1 h. After the addition, the mixture was stirred at 80°C for 1 h.
After the reaction was completed, the temperature was lowered to about 40° C., 70 kg of OS-15 was added, and the mixture was stirred for 15 minutes and filtered to remove impurities to obtain the product.

●  It is obtained by polymerizing acrylic acid as a monomer in the presence of an initiator.
The production method of acrylic acid
a. Cyanoethanol method Using chloroethanol as raw material, and sodium cyanide melon to obtain cyanoethanol. In the presence of sulfuric acid, cyanohydrin is hydrolyzed at 175°C to obtain acrylic acid.
b. Acrylonitrile hydrolysis method Using acrylonitrile as raw material in the presence of sulfuric acid to generate sulfate of acrylamide, and then hydrolyzed to obtain acrylic acid.
c. Repe method and modified Repe method Dissolve acetylene in tetrahydrofuran and add it to the reaction kettle after metering. In the presence of a catalyst composed of nickel bromide and copper bromide, carbon monoxide and water are passed through, and the reaction is carried out at 200 to 225 ° C and 7.8 to 9.8 MPa.
d. Acrolein oxidation method: Mix propylene, air, and water in a ratio of 1:10:6 (V), and then pass into the first fluidized bed to catalyze aluminum, vanadium, phosphorus, iron, aluminum, nickel, and potassium. Stay at 370-390℃ for 5.5s and the line speed is 0.6m/s. Then enter the second fluidized bed, stay for 2.25s under the catalysis of aluminum-vanadium=tungsten, and control the reaction temperature at 270-300°C. The space-time yield of acrylic acid is 55-60 kg/m·h. This method is safe, light in pollution and low in cost. It is the main method for domestic and foreign production.
Preparation of polyacrylic acid Add deionized water into the polymerization kettle, heat at 60-100℃, and start to drop the mixed solution of ammonium persulfate and acrylic acid (prepared with deionized water). After dripping, continue to keep stirring for 3 to 4 hours. product.

●  It is obtained by initiating polymerization of acrylic acid in the presence of ammonium persulfate.

Team Presentation