| abstract |
The invention relates to the technical field of fine chemicals, in particular to a new type of water-based polyurethane composition, which is obtained through the chain extension of polyurethane prepolymer and then capped, and then mixed with high solid content, low viscosity, and convenient for industrial production. The water-based polyurethane composition can be used as coating and adhesive application. The novel water-based polyurethane composition has very low viscosity, is convenient to prepare and use, and is non-toxic and environment-friendly. The solid content of the novel aqueous polyurethane composition obtained by the invention can reach more than 65%, the lowest viscosity is 200mPa·s, and the tensile strength of the adhesive film can reach 64.7MPa. |