Dispersion of polyurethane hidrofilica non iu00c8nica contu00ecnuo aqueous process to produce a dispersion of polyurethane hidrofu00eclica non iu00c8nica substrate coated with the aqueous polyurethane polu00ecmero and substrate impregnated with polyurethane polu00ecmero '.

摘要

The dispersion of polyurethane hidrofu00eclica '- iu00c8nica contu00ecnuo aqueous process to produce a dispersion of polyurethane hidrofu00eclica' - iu00c8nica substrate coated with the aqueous polyurethane polu00ecmero and substrate impregnated with polu00ecmero polyurethane. The present invention relates to a dispersion of hydrophilic polyurethane non - aqueous ion, and a continuous process for producing the same.The dispersion of polyurethane, hydrophilic non aqueous ion according to the present invention includes the reaction product of a non-ionic hydrophilic prepolymer, water, optionally a surfactant and optionally an external agent, chain extender. The non-ionic hydrophilic prepolymer includes the reaction product of a first component and a second component.The first component is selected from the group consisting of a poliisocianato aromatic, an aliphatic poliisocianato, and combinations of these. The second component is a hydrophilic alkylene oxide polyol, a hydrophilic nonionic alkylene oxide monol, or combinations of these.The continuous process to produce dispersion of hydrophilic polyurethane aqueous ionic 'includes the following steps: (1) to provide a current phase liquid dispersed with a flow rate R ~ 2 ~, and the current dispersed phase liquid contains a polyurethane prepolymer hidr Ofu00edlico nonionic comprising the reaction product of: (a) a first component.As the first component is a poliisocianato aromatic, an aliphatic poliisocianato, or combinations thereof; and (b) a second component and the second component is a hydrophilic nonionic alkylene oxide polyol, a nonionic alkylene oxide monol hidrofilico, or C Ombinau00e7u00f5es; (2) to provide a current continuous phase liquid and a flow rate R ~ 1 ~,And the current continuous phase liquid comprises water and optionally a surfactant; (3) continuously converge to the current phase liquid dispersed and the current continuous phase liquid in a dispersador high shear.Where R ~ 2 ~ R ~ 1 ~ is in range and 10 90 30 - 70; 0 (4) emulsify the said polyurethane prepolymer hydrophilic nonionic in the water via a dispersador high shear; and (5) to produce the said aqueous dispersion of polyurethane hydrophilic ion not.