Free sample CarbomerCAS:9007-20-9，Acrylic acid Polymers

Product Introduction

English name: Carbomer
CAS :9007-20-9
Molecular formula: C15H17ClO3
Molecular weight: 280.74668
EINECS no. : 618-435-5
Boiling point: 116 °C
Density: 1.2 g/mL at 25 °C

Overview

Polyacrylic acid, referred to as PAA, alias 2-acrylic acid homopolymer, acrylic resin coating, acrylic resin, acrylic monomer polymer, acrylic modified resin, acrylic resin emulsion, is a water-soluble polymer of acrylic acid, but also soluble in some polar solvents, such as methanol, di alkane and ethylene glycol. IONIZATION CONSTANT CHEMICALBOOK 4.75. Because the molecule contains a large number of carboxyl groups, it can react with alkali, alcohol, amine, but also dehydration, degradation and complex reaction. It can be used as thickening agent, dispersant, flocculant, adhesive and film forming agent, etc. It is widely used in coatings, plastics, paper making, textile, rubber, food, medicine, cosmetics and water treatment industries.

Physicochemical Property

Low molecular weight polyacrylic acid is a clear and colorless solid. Its 20% ~ 30% aqueous solution is light yellow or colorless viscous liquid. The molecular weight is 500 ~ 5000 and the pH value is 2 ~ 4. Its dissociation constant is around 5×10-5, which is close to the dissociation constant of acetic acid (1.8×10-5) and much larger than the first dissociation constant of carbonic acid. Therefore, polyacrylic acid is a weak acid stronger than carbonic acid. It is generally Chemicalbook stable to strong acids, strong bases and oxidants, but under high temperature or long-term light, low molecular weight polyacrylic acid will still repolymerize, so that its molecular weight continues to increase, the viscosity also increases, and finally become a gelatine state of solid precipitation from the aqueous solution. It is a chelating agent and lattice distortion agent, and can form a stable complex with metal ions in water, such as calcium and magnesium. It also has good dispersion performance, which can disperse amorphous particles such as crystalline compounds, soil, dust, corrosive substances and biological detrital in water.

Use

Used as scale inhibitor and dispersant in industrial water treatment. Good compatibility.
It can also be treated before drinking water. It is used to separate red mud in the preparation of alumina. In the chlor-alkali plant to refine brine for cosmetics manufacturing, do ointment can promote the absorption of gray flavus, and can be used for drug control release.
It is used to prepare finishing agent for leather and some high-grade commodities. Making acrylic paint used for fixation of chromate, auxiliary tanning, such as, to reduce the chromium pollution for improving the processing performance of polyvinyl chloride (PVC) used as a corrosion inhibitor, water quality stabilizer, hardening agent, thickening agent used for leather finishing, such as filling agent, textile warp size and water quality stabilizer used in the manufacture of acrylic paint of film-former class can be used as leather finishing agent and adhesive, It is widely used in light leather decoration such as face leather, garment leather, Chemicalbook set leather, which can enhance the bending resistance, elongation, light resistance, aging resistance, cold resistance and heat resistance of the leather.

It is the main film modification agent for pigments and ointments to modify granular face leather.
It can be used as an excellent suspending agent, emulsifier, transparent substrate for advanced cosmetics and pharmaceutical excipients.
It is also the most effective water-soluble thickening agent.
It can also be used in toothpaste, thickening agent and binder.
Is a commonly used dispersant, can calcium carbonate, calcium sulfate and other salts of microcrystals or sediment dispersed in water without precipitation, so as to achieve the purpose of scale inhibition.
In addition to being used as scale inhibitor and dispersant in circulating cooling water system, it is also widely used in papermaking, textile, printing and dyeing, ceramics, coatings and other industries.
Used in chemical industry, chemical fertilizer, printing and dyeing, power generation and other water treatment.
Purpose:Used in power plants, iron and steel plants, chemical plants, fertilizer plants, oil refineries and air conditioning systems and other circulating cooling water systems to prevent scaling.