the main About company Catalog news Contacts For clients Customer Login Forgot your password? check in Catalog Low pressure polyethylene (HDPE) High pressure polyethylene (LDPE) Suspension polyvinyl chloride (PVC) Constant K = 56-58 Constant K = 60-62 Constant K = 64-66 Constant K = 70-72 Polypropylene (PP) Finished products Polymer dyes and additives Suspension polyvinyl chloride (PVC) Polyvinyl chloride (PVC) is a thermoplastic polymer of vinyl chloride. It is a white solid. Resistant to many acids and alkalis. International designation - PVC . PVC is the oldest man-made material. For the first time, polyvinyl chloride was obtained by the French chemist Henri Victor Regnault in the laboratory. In 1913, the German Fritz Klatte received the first patent for the production of PVC. The first industrial synthesis was carried out in Germany in the 1930s of the last century. After World War II, PVC became the most used material in pipes, floor coverings, cable insulation and a wide range of other products. In the early 50s, first in the United States and then in Europe, PVC began to be used as a material for window frames. Currently, windows are manufactured from extruded PVC systems. Currently, PVC is obtained by polymerizing vinyl chloride in three ways: in suspension, in emulsion and in bulk. The company "CENTROPOLYMER" offers to your attention PVC-resin, obtained by the most massive method - suspension, the so-called "suspension PVC". PVC has a very broad molecular weight distribution. The degree of polymerization for different fractions of the polymer of the same brand varies several tens of times. In this regard, the molecular weight of PVC is often characterized not by its numerical value, but by the Fikentcher constant Kf or simply K, which is determined by the equation: log ηrel = [(75k 2 С) / (1 + 1.5kС)] + kС where η rel is the relative viscosity of the polyvinyl chloride solution, C is the concentration of the solution (in g / 100 ml), k = K · 10 -3 . Other quality indicators are: bulk density, moisture content, particle size distribution, ability to absorb plasticizer . Polyvinyl chloride is one of the most common plastics: over 3,000 types of materials and products are obtained from it, which are used for various purposes in the electrical, light and food industries, heavy engineering, shipbuilding, agriculture, medicine, and in the production of building materials. © LLC "CENTROPOLIMER", 2009-2015 Address: 107023, Russia, Moscow, Semenovskiy per., 6 tel .: +7 (495) 225-83-46 fax: +7 (495) 287-47-01 Website development Saludo