FIELD: technological processes, chemistry.
SUBSTANCE: invention is related to method for production of polyurethane foam with application of secondary waste of polyethylene terephtalate, and may be used for production of hard polyurethane foams. Polyurethane foam is produced by interaction of polyisocyanate with polyol component containing secondary waste of polyethylene terephtalate dissolved in triethanolamine or in mixture of mono-, di-, trichloracetic acids, in amount of not more than 67 wt % from total weight of polyol component. At that interaction is carried out at the ratio of polyol component : polyisocyanate as 1:1 - 1:2. Prepared polyurethane foams have good consumer properties, such as compression strength, oil-, heat resistance and reduced inflammability.
EFFECT: recycling of polymer wastes in the form of containers and package from polyethylene terephtalate, considerable reduction of polyurethane foam cost with simultaneous solution of environmental problems due to recycling of secondary polyethylene terephtalate.
16 ex
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