HPMC F 50

Specification of HPMC F 50

Application of HPMC F 50

KimaCell^® HPMC F 50 is one of the main dispersant varieties in the polyvinyl chloride (PVC) industry. During the suspension polymerization of vinyl chloride, it can reduce the interfacial tension between VCM and water, and help vinyl chloride monomer (VCM) to disperse uniformly and stably in the water medium; prevent VCM droplets from merging at the beginning of the polymerization process; Prevent coalescence between polymer particles in the middle and later stages. In the suspension polymerization system, it plays a dual role of dispersing and protecting stability.

Polyvinyl chloride (PVC) resin with a low degree of polymerization generally refers to a polyvinyl chloride (PVC) resin with a degree of polymerization below 800. Due to its low molecular weight, high apparent density, good melt fluidity, short plasticizing time, and easy processing, it is widely used in the manufacture of sheets, injection molding pipe fittings, blow molding, and modified resins (such as deep chlorination to produce chlorinated polyvinyl chloride). Vinyl chloride resin) and so on are widely used. However, the porosity of PVC resin with low degree of polymerization is low, the resin particles are relatively compact, and the particle film produced by the graft copolymerization of dispersant and vinyl chloride is relatively thick, which affects the processing performance and further modification of the resin.