SYNTHESIS OF POLYURETHANE MICROGEL BY SOLUTION POLYMERIZATION AND POLYURETHANE MICROGE PREPARED BY THE SAME

摘要

The present invention is a solution as a method for polymerization synthesis of microgel by a hydrophilic polyol per mole of a diisocyanate-based compound of 1.5 to 6 mol and the chain extender of 0.5 to 2.5 mol of the polyurethane microgel comprising the step of reacting under the organic solvent conditions of a method for producing. How the present invention is that in the step of by solution polymerization synthesized microgel, which is generated by such that there a hydrophilic polyol on the surface of the microgel microgel particles so that they can stay in the nano-micro-gel particle level by preventing stick together, It provides. The present invention also provides a polyurethane microgel levels of nanoparticles produced by the above production method. ; Polyurethane, microgels, the diisocyanate, polyol, polyethylene glycol