Suspension polymerization process of preparing polyvinyl chloride resin with high molecular weight

There is a method of preparing the high molecular weight PVC resin by the suspended polymerization. The method combines a kind of high alcoholysis and low viscosity PVA(I) with an appropriate amount of low alcoholysis and lower polymerism PVA(II), according to a certain matching propertion which matches with the stirring condition. The prepared particles of the high molecular weight PVC rosin hasregular and loose shape and concentrative distribution of the particle diameters, and it is easy to strip the remaining monomer (the remaining magnitude of the chloroethylene is low), and its "fish eyes" are little, and it has the higher aperture rate and retains appropriate apparent density and fairly good plasticizing-machining performance.