There are not many kinds of basic structures of polyurethane, which are generally called systems in the industry; such as MDI system foam or prepolymer, TDI system sponge, polyester type sponge, polyether type or even special tetrahydrofuran type polyether prepolymer or thermoplastic granules, etc. Read More

The influence of polyol on spandex production is determined by the properties of polyol itself.The quality of polyether polyol is evaluated by the following indicators: hydroxyl value, acid value, moisture, viscosity, color, molecular weight distribution, unsaturation, etc. The following is a review Read More