PREPARATION AND PROPERTIES OF HIGH-SOLID CONTENT AND LOW-VISCOSITY POLYURETHANE MICROEMULSIONS
高固含量低黏度聚氨酯微乳液的制备及性能研究

A series of novel stable polyurethane emulsions with high-solid-content and low-viscosity were prepared by self-emulsification.They were prepared by the reaction of poly(tetrahydrofuran-co-propylene oxide)glycol(Ng210),isophorone isocyanate(IPDI)with sodium 1,2-dihydroxy-3-propanesulfonate(DHPS)and dimethylolpropanoic acid(DMPA)as hydrophilic chain-extending agents.Influence of the mass ratio of DHPS and DMPA on properties of polyurethane emulsions and films was analyzed.The results showed that the obtained...