Polyvinyl alcohol is produced by the polymerization of vinyl acetate. Then, polyvinyl acetate was saponified under the action of different alkali amounts to obtain polyvinyl alcohols having different degrees of alcoholysis. Cold-soluble polyvinyl alcohol powder is made by partially cold-milling polyvinyl alcohol by cryogenic milling. It is a water-soluble, environmentally friendly white solid powder.Putty Powder Additive Pva Powder. Feature: Good film formation, adhesion, solvent resistance, friction resistance and tensile strength. Appearance:White solid powder Melting point:180-190ºC Size:80-120 mesh ★ Small particles, small dosage, easy to disperse. ★ Dissolved in cold water. ★ Good bonding performance; improve mortar strength. ★ Prevent mortar from cracking and detaching; increase adhesion strength and smoothness. ★ Non-toxic, tasteless and environmentally friendly. Mortar, putty powder, coating, interface agent, decorative plaster, tile jointing agen…