THERMOPLASTIC POLYURETHANE POLYMER FOR ADHESIVES INCLUDING ORGANIC-INORGANIC NANO CLAY, A PREPARATION METHOD THEREOF AND MOLDED ARTICLES THEREOF

摘要

A thermoplastic polyurethane resin for an adhesive, a method for preparing the resin, and a molded product prepared by using the resin are provided to reduce solidification time and to improve the wettability to a substrate, thereby enhancing initial and latter adhesive strength and to allow a pour point to be controlled. A thermoplastic polyurethane resin comprises 50-90 parts by weight of a polyester polyol; 10-40 parts by weight of an isocyanate compound; 5 parts by weight or less of an organic/inorganic nanoclay; and 10 parts by weight or less of a chain extender. Preferably the organic/inorganic nanoclay is a nano-sized organized montmorillonite clay prepared by inserting the polyethylene glycol having a molecular weight of 200-200,000 into sodium montmorillonite; and the polyester polyol is a random polyester polyol having a hydroxyl number of 11.22-280.55 mg KOH/g.