FIELD: chemistry.
SUBSTANCE: invention relates to improved method of obtaining polyols, which includes the following stages: a) oxidation of unsaturated natural fats, unsaturated natural fatty acids and/or esters of fatty acids by dinitrogen monoxide, b) interaction of product, obtained at stage a), with hydrogen with application of heterogeneous catalyst on carrier. Invention also relates to method of obtaining polyurethanes, which includes stages: a) oxidation of unsaturated natural fats, unsaturated natural fatty acids and/or esters of fatty acids by dinitrogen monoxide, b) interaction of product, obtained on stage a), with hydrogen with application of heterogeneous catalyst on carrier with obtaining polyols, and c) interaction of polyisocyanates with polyols, obtained at stage b), as compounds, which have at least two hydrogen atoms, capable of reaction with respect to isocyanate groups.
EFFECT: simple methods make it possible to obtain broad spectrum of products without application of expensive initial raw material.
10 cl, 6 ex
