Hydroxypropylmethylcellulose

& : Chinese name: Hydroxypropyl methylcellulose Foreign name: rc Abbreviation: C cellulose Appearance: white powder English alias.: %
< c= Chemical properties
<, , Appearance: white Or off-white powder.
< , , the particle size mesh pass rate is greater than .% mesh pass rate %. Special specifications of particle size ~ mesh.
< , , Carbonization temperature: ℃
< , Apparent density: ../c (usually around ./c), Specific gravity: ..
< , , Discoloration temperature: ℃
< , Surface tension: % aqueous solution is/c.
< , Solubility: soluble in water and some solvents, such as ethanol in appropriate proportions/ Water, propanol/water, etc. Aqueous solutions are surface active. It has high transparency and stable performance. Products of different specifications have different gel temperatures and solubility changes with viscosity. The lower the viscosity, the greater the solubility. Different specifications of C have certain differences in performance. The dissolution of C in water is not affected by the value.
< , As the methoxy group content decreases, the gel point increases, the water solubility decreases, and the surface activity also decreases.
< , C also has thickening ability, salt resistance, low ash powder, stability, water retention, dimensional stability, excellent film-forming properties, and a wide range of enzyme resistance, dispersion and adhesion. Features.
&Uses:
.> <, .Construction industry: As a water retaining agent and retardant for cement mortar to make the mortar pumpable. Used as a binder in plaster, plaster, putty powder or other building materials to improve spreadability and extend operating time. Used as a pasting tile, marble, plastic decoration, pasting enhancer, and can also reduce the amount of cement. The water-retaining property of C prevents the slurry from cracking due to drying too quickly after application, and enhances the strength after hardening.
< , .Ceramic manufacturing industry: widely used as adhesive in the manufacturing of ceramic products.
< , .Paint industry: used as a thickener, dispersant and stabilizer in the paint industry, and has good compatibility in water or organic solvents. As a paint stripper.
< , .Ink printing: used as a thickener, dispersant and stabilizer in the ink industry, and has good compatibility in water or organic solvents.
< , .Plastic: used as mold release agent, softener, lubricant, etc.
< , .Polyvinyl chloride: used as a dispersant in the production of polyvinyl chloride, and is the main additive for the preparation of C by suspension polymerization.
< , .Others: This product is also widely used in leather, paper products industry, fruit and vegetable preservation and textile industry.
< , .Pharmaceutical industry: coating materials, film materials, rate-controlling polymer materials, stabilizers, suspending agents, tablets, adhesives, and thickeners for sustained-release preparations