FIELD: chemistry.
SUBSTANCE: invention relates to foamed polyurethanes obtained from polyester polyols which are obtained by reacting diols with a mixture of dibasic acids derived from a mixture of dinitrile compounds which are obtained as by-products of producing adiponitrile by hydrocyanation of butadiene. The foamed polyurethane is obtained by reacting: a) polyisocyanate and b) polyester polyol which is obtained by polymerising a mixture of polyol monomers and monomer dibasic acids. Said monomer dibasic acids consist of a mixture of M dibasic acids, having the following weight composition: methylglutaric acid (MGA): 80-95%; ethylsuccinic acid (ESA): 0-10% adipic acid (AA): 5-15%, where the dibasic acids in the mixture M can completely or partially be in an anhydride form, and where the reaction is carried out in the presence of a foaming agent or blowing agent and a catalyst.
EFFECT: foamed polyurethanes have improved physical properties.
16 cl, 5 tbl, 5 ex
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