Abstract: A glass bead-filled resin composition comprising (I) a thermoplastic polyurethane derived from polybutylene terephthalate and a polyfunctional isocyanate, (II) glass beads having a diameter of not more than 100 microns, and (III) an aminosilane or epoxysilane. The above composition can be prepared by kneading under heat (I) a thermoplastic polyurethane derived from polybutylene terephthalate and a polyfunctional isocyanate, and (II) glass beads having a diameter of not more than 100 microns and coated with (III) an aminosilane or epoxysilane.

Abstract: A flame-retarding resin composition comprising (1) polybutylene terephthalate, (2) an organohalogen compound as a flame-retarding agent, (3) a flame-retarding supplementary agent, (4) calcium sulfate, and (5) an inorganic fibrous reinforcing agent, and optionally (6) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50 mole %, an ethylene/vinyl acetate copolymer, and a saponified ethylene/vinyl acetate copolymer.

Abstract: A glass fiber-reinforced thermoplastic resin composition comprising (I) a thermoplastic polyurethane derived from polybutylene terephthalate and a polyfunctional isocyanate and (II) glass fibers surface-coated with 0.05 to 3% by weight of an aminosilane or epoxy silane and having a length of 0.01 to 0.2 mm and a length-to-diameter ratio of 1.5 to 20. The composition can give molded articles having high mechanical strength and thermal stability and being free from warpage.

Abstract: A flame-retarding thermoplastic polyester resin composition comprising (1) a polyester obtained from a terephthalic acid or an alkyl ester thereof and a glycol having 2 to 4 carbon atoms, (2) an organohalogen compound, (3) an inorganic flame-retarding supplementary agent, and (4) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50%, an ethylene/vinyl acetate copolymer and a saponified ethylene/vinyl acetate copolymer, and optionally (5) a reinforcing agent; and a process for production thereof.

Abstract: The present invention relates to a process for preparation of molding resins comprising heating and kneading an isocyanate prepolymer derived from a hydroxyl-terminated polymer and a polyfunctional isocyanate with a hydroxyl-terminated low-molecular-weight polybutylene terephthalate in the presence of reinforcing filler by means of an extruder.

Abstract: A process for preparing a flame retardant thermoplastic polyester which comprises reacting a low molecular weight polyester having terminal hydroxyl groups with a polyfunctional isocyanate, said low molecular weight polyester being one synthesized using as its acid component a compound selected from the group consisting of terephthalic acid and its lower alkyl esters of 1-4 carbon atoms and as its alcohol component 1,4-butanediol and a compound selected from the group consisting of an alkylene oxide adduct of 2 - 4 carbon atoms of tetrabromobisphenol A and an alkylene oxide adduct of 2 - 4 carbon atoms of tetrachlorobisphenol A.