Method for obtaining star-shaped polyethers and the application of cyclic polyalcohol potassium salts, preferably the pentahydric alcohol with the purpose to obtain the star-shaped polyethers

摘要

method for polieteru00f3w gwiau017adzistych, through anion polymerization in which monomer after exhaustion, one of the known methods is transformed alkoholanowe group in terminal hydroxy groups, the resulting pollution and solvent or solvents, and poly mer dried to constant weight, characterised by the fact that leads the reaction wodorku potassium activated ligandem,preferably in the form of ether koronowego, with salt potasowu0105 cyclic polyvinyl alcohol, preferably pentawodorotlenowego, in an atmosphere of gas inertnego, in an organic solvent with the group of linear or cyclic ethers, preferably at between 15 oc to 25 degrees celsius and then after separating hydrogen is added to the reaction mixture, monopodstawiony oxirane and leads its polymerization.preferably in a range of between 15 oc to 30 oc under normal pressure or temperature from 90u00b0c to 120u00b0c under pressure of 0.15 mpa to 0.5 mpa. the subject of the invention is the use of potassium salts of cyclic polyvinyl alcohol, especially pentawodorotlenowego to initiate polymerization monopodstawionych oksiranu00f3w, in order to receive polieteru00f3w gwiau017adzistych.