POLYURETHANES

Polyurethane is a heterochain polymer whose macromolecule contains an unsubstituted and/or substituted urethane group −N(R)−C(O)O−, where R is H, alkyls, aryl or acyl. Polyurethane macromolecules may also contain simple and ester functional groups, urea, amide groups and some other functional groups that determine the complex properties of these polymers.

This polymer is made by mixing isocyanate and polyol in specified proportions. The uniqueness of PU lies in the simultaneous polymerization and molding of the part. The production of final products depends on mixing the exact ratio of chemical ingredients and maintaining the appropriate temperature conditions. Due to the variety of mechanical properties of polyurethane, prepared according to various technologies and recipes, it is used in almost all industries for the manufacture of a wide variety of seals, decorative elements, protective coatings, paint products, adhesives, sealants, parts, insulators, etc.

Due to its extremely high wear resistance, polyurethane is used to make shoe soles, boots, protective films and many other things.

One of the most popular types of PU is polyurethane foam. It is often used as a filler in the furniture, automotive, light industry, for upholstery of vehicle interiors, handles and bumpers. In the shoe industry, polyurethane foams are used as supports and other shoe elements. Rigid polyurethane foams are used as a refrigerating agent in refrigeration units, in main pipelines, as thermal insulation, as well as in acoustic and waterproofing during construction, in metal sandwich panels.

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