Abstract: Thermoplastic molding compositions and articles comprise immiscible thermoplastic polymer components and reinforcing fibers. The immiscible thermoplastic polymer components and the fibers are blended together under high shear conditions. The molding composition generally contains at least two phases and has an extremely smooth and fiber-free surface. Generally, other very good physical properties are obtained such as high heat distortion temperatures, high tensile modulus, high flex modulus, and the like are also very good. A desired blend of thermoplastic components is thermoplastic polyurethane and modified polyethylene terephthalate with glass fibers. The molded polyethylene terephthalate copolyester blended with an immiscible thermoplastic polymer, preferably modified polyurethane, and glass fibers produces thermoplastic molding compositions and articles having surprisingly superior impact strength.

Abstract: Thermoplastic molding compositions and articles comprise immiscible thermoplastic polymer components and reinforcing fibers. The immiscible thermoplastic polymer components and the fibers are blended together under high shear conditions The molding composition generally contains at least two phases and has an extremely smooth and fiber-free surface. Generally, other very good physical properties are obtained such as high heat distortion temperatures, high tensile modulus, high flex modulus, and the like are also very good. A desired blend of thermoplastic components is thermoplastic polyurethane and polyethylene terephthalate with glass fibers A polyethylene terephthalate copolyester blended with an immiscible thermoplastic polymer, preferably polyurethane, and glass fibers produces thermoplastic molding compositions and articles having surprisingly superior impact strength.

Abstract: A magnetic recording tape, as for audio apparatus, video apparatus, or computers, has a binder containing magnetic particles therein bonding the magnetic particles to the substrate. The binder comprises the reaction product of a polyisocyanate and a blend of a hydroxyl terminated polyester intermediate and a derivative of a bis-phenol A chain extender having the formula ##STR1## where R.sup.1 and R.sup.2, independently, is an alkylene having from 2 to 4 carbon atoms, with 2 carbon atoms, that is, ethylene, being preferred.