Natural Polymer Hydroxypropyl Methylcellulose For Cement Based Plaster

Product Description

Construction Grade HPMC Hydroxypropyl Methylcellulose is a methyl cellulose ether derivatives which is a synthetic high molecular polymer prepared by chemical modification of natural refined cotton or wood pulp as raw material. The production of hydroxypropyl methyl cellulose (HPMC)is different from synthetic polymers. Its basic material is cellulose, a natural polymer compound. Due to the special structure of natural cellulose, cellulose itself has no ability to react with etherifying agents. But after the swelling agent is treated, the strong hydrogen bonds between the molecular chains and within the chain are destroyed, and the active release of the hydroxyl group turns into reactive alkali cellulose. After the etherification agent reacts, the -OH group is converted to the -OR group. Finally get HPMC.

Construction Grade HPMC is a white powder that swells into a clear or slightly turbid colloidal solution in cold water. It has the characteristics of thickening, bonding, dispersion, emulsification, film formation, suspension, adsorption, gelation, surface activity, moisture retention and protective colloid.