Hydroxypropyl cellulose HPC
HPC is a thermoplastic, nonionic cellulose ether that is soluble in water and many organic solvents. The aqueous solution has a moderate degree of surface activity and produces thickening and stabilizing effects in the aqueous dispersion. At very high concentrations, HPC exhibits liquid crystal properties. Water-soluble – soluble in cold water, the solution is heated to 40 ~ 45 ° C cloud point, the polymer begins to precipitate from the solution, if there are other components in the solution will affect its cloud point. Organic solvents – HPC is also soluble in a variety of organic solvents to give flow characteristics of solutions such as methanol, ethanol, propylene glycol and cellosolve, but also soluble in organic solvent-water systems. Pseudoplasticity—HPC solution has a pseudoplastic flow characteristic viscosity that increases rapidly with increasing concentration. At high concentrations, HPC exhibits liquid crystal properties. The solid can be molded or extruded at temperatures above 100 °C. Anti-enzymatic – has strong anti-enzyme ability and excellent anti-biodegradability. Water absorption – has a low equilibrium moisture content.
More About HPC：
Molecular formula:C3H7O *
Density:0.5 g/mL at 25 °C(lit.)
|Viscosity, 1% or 2% aqueous solution, 20 ° C||5～40000|
Use Of HPC:
HPC is mainly used in the industry for suspension PVC production as a dispersant, which can obtain products with uniform particle distribution, good plasticizer adsorption and excellent reworkability; in oil-soluble coatings, adhesives, inks, cosmetics, paint removers Thickeners and binders in products such as dry batteries; slow release agents in air fresheners, solid fragrances, toilet deodorants, etc. It is used as a treatment agent for fibers, a mixture of mortar and cement, a paper coating agent, a metal surface protection film, and the like. It is mainly used as a binder, film coating and sustained release agent in the pharmaceutical industry; it has unique and good effects in food and fruit film preservation and surface finishing of cakes, candy and chocolate.
Package Of HPC:
Storage:Stored in a closed, low temperature, heated to decompose into ammonia and acetic acid