GRAFTPOLYOLS WITH THE BIMODAL DISTRIBUTION OF THE PARTICLES BY SIZES AND THE METHOD OF PRODUCTION OF SUCH GRAFTPOLYOLS, AND ALSO THEIR APPLICATION FOR PRODUCTION OF THE POLYURETANES

摘要

FIELD: chemical industry; methods of production of the graftpolyols and polyurethanes.;SUBSTANCE: the invention is pertaining to the graftpolyols of the interpolymers of acrylonitrile and styrene with the bimodal distribution of the particles by sizes and the common content of the solid matter from 5 up to 65 mass %, which contain the small particles with the diameter from 0.05 up to 0.7 microns and the large particles with the diameter from 0.4 up to 5.0 microns. At that the measured by the method of the light scatterings maximums of the large and the small particles are not overlapped, and have total amount of the solid matter with the certain sizes of the particles summed up out of the volumetric share of the small particles from 5 up to 45 % and the volumetric share of the large particles - from 95 up to 55 %. At that these volumetric shares supplement one another up to 100 %; and also to the method of their production and to application of such graftpolyols for production of polyurethanes. Usage of the presented graftpolyols positively influences on the properties of the foaming of the polyurethanes and increases their rigidity.;EFFECT: the invention ensures, the usage of the presented graftpolyols of the interpolymers of acrylonitrile and styrene positively influences on the properties of the foaming of the polyurethanes and increases their rigidity.;20 cl, 5 dwg, 12 tbl, 5 ex