▎ 摘　　要

NOVELTY - Polyurethane thermoplastic polyurethane curtain inner lining comprises 45-60 pts. wt. dihydric alcohol, 35-50 pts. wt. isocyanate, 0.05-0.25 pts. wt. dibutyltin dilaurate and 1.25-6.5 pts. wt. inorganic filler. USE - The inner lining is useful in the family and office, indoor lighting intensity, sun-shading and beautifying indoor environment. ADVANTAGE - The inner lining is economical and has good shading effect, strong heat resistance, obvious sound insulation, waterproof, ventilating, anti-aging, and good product quality. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing curtain inner lining, comprising mixing dihydric alcohol, isocyanate, and inorganic filler, stirring uniformly, adding catalyst dibutyltin dilaurate, heating to perform a polymerization reaction to obtain a polyurethane TPU, and extruding the polyurethane TPU and casting.