The polyurethane dispersion stable in a mixture of alcohol and water, adhesive for sealing the cold, product, saturante, cosmetic application and composition for the care of the hair.

摘要

"Polyurethane dispersion stable in a mixture of alcohol and water, adhesive for sealing the cold, product, saturante, cosmetic application and composition for the hair care".A dispersion of a polyurethane and a preparation method are provided. The dispersion of polyurethane is stable in a mixture of alcohol and water.The dispersion comprises the reaction product of (a) a prepolymer of polyurethane terminated with isocyanate comprising the reaction product of (I) at least one composed of hydrogen poliativo oligoMu00e9rico insoluble in the alcohol, in which the said composed of hydrogen poliativo is a structure of alkyl, arila, or aralquila optionally replaced with N,,And S; (II) at least one poliisocianato, and (III) at least one composed of hydrogen poliativo soluble in said mixture of alcohol and water.(b) a chain extender polifuncional; and (c) a chain terminator of mono functional, in which the ratio of equivalent chain extender difuncional to isocyanate pre polymer is 0.60 to 1.20.