الوصف

1.Product introduction Polyester polyols is one of the main raw material for the production of polyester polyurethane. A variety of specifications, mark polyester polyols can be generated by reaction with isocyanate polyurethane. Used in the manufacture of polyurethane rigid foam, elastomer, adhesive, coating and etc. It is widely used in external wall insulation, waterproof, plastic runway, flooring, packaging, tire, textile and other fields. ***2 mainly used for continuous line sheet of rigid foam combined polyether production. 2、Technical indicator. Appearance Light yellow transparent liquid Hydroxyl value **5±*5mgKOH/g Acid value ＜2.0 mgKOH/g Dynamic viscosity **0±**0cpa.s *5℃ Moisture [water] content ＜0.*5% System Phthalic anhydride, diethylene glycol 3、Product characteristics （1）solubility: It almost insoluble in water, but soluble in acetone, methyl ethyl ketone, alcohol, ethyl acetate and other organic solvents. (2) Chemical property: With polyisocyanate reaction containing *-NCO groups, the formation of polyurethane. (3) Polyester is universal.Corresponding to the requirements of different formulations have specialized polyester, in order to adapt to the use and performance of different products.