Abstract: The invention relates to water-vapor permeable, flat composite parts consisting of at least two layers, at least one layer being made of a polyester and polyether-based thermoplastic polyurethane. The invention also related to the use thereof.

Abstract: The invention relates to water-vapour permeable, flat composite parts consisting of at least two layers, at least one layer being made of a polyester and polyether-based thermoplastic polyurethane. The invention also related to the use thereof.

Abstract: Light-stable, sinterable, thermoplastic polyurethanes with improved blooming behavior and good thermal stability as well as good technical processability are produced from an aliphatic diisocyanate using one or more chain extenders corresponding to a specified formula. These polyurethanes are particularly useful in the production of molded articles, particularly molded articles for automotive interiors.

Abstract: Light-stable, thermoplastic polyurethanes with good processability and having an ASTM D-1003 haze value of less than 10%, the polyurethane prepared by a process comprising: reacting: (a) a diisocyanate component comprising 1,6-hexamethylene diisocyanate; (b) a chain extension component consisting of (b1) 1,4-di(?-hydroxyethyl)hydroquinone and (b2) at least one chain extender selected from the group consisting of diols having a 2 or 3 carbon atom chain length between the two OH groups, in a molar ratio of chain extender (b1) to chain extender (b2) of 10:1 to 1:4; and (c) at least one polyol component having a number average molecular weight of 450 to 10000 g/mol, and an average number of Zerewitinoff-active hydrogen atoms of at least 1.8 to at most 3.0; wherein the ratio of isocyanate groups in component (a) to isocyanate-reactive groups in components (b) and (c) is 0.9:1 to 1.1:1.

Abstract: The present invention relates to a process for the preparation of self-extinguishing thermoplastic polyurethanes which optionally contain conventional additives and/or auxiliary substance.

Abstract: The present invention relates to a process for the preparation of self-extinguishing thermoplastic polyurethanes which optionally contain conventional additives and/or auxiliary substance.

Abstract: Light-stable, thermoplastic polyurethanes with good processability and having an ASTM D-1003 haze value of less than 10%, the polyurethane prepared by a process comprising: reacting: (a) a diisocyanate component comprising 1,6-hexamethylene diisocyanate; (b) a chain extension component consisting of (b1) 1,4-di(?-hydroxyethyl)hydroquinone and (b2) at least one chain extender selected from the group consisting of diols having a 2 or 3 carbon atom chain length between the two OH groups, in a molar ratio of chain extender (b1) to chain extender (b2) of 10:1 to 1:4; and (c) at least one polyol component having a number average molecular weight of 450 to 10000 g/mol, and an average number of Zerewitinoff-active hydrogen atoms of at least 1.8 to at most 3.0; wherein the ratio of isocyanate groups in component (a) to isocyanate-reactive groups in components (b) and (c) is 0.9:1 to 1.1:1.

Abstract: Thermoplastic polyurethanes and molding compositions containing the same having improved surface resistance (writing and scratch resistance) and good industrial processability, and the use thereof, such polyurethanes prepared by reacting: (a) one or more organic diisocyanates; (b) a chain extender comprising at least one low molecular weight polyol having on average at least 1.8 and not more than 3.0 Zerewitinoff-active hydrogen atoms and a number-average molecular weight Mn of 60 to 400 g/mol; and (c) at least one polyol component having a number-average molecular weight Mn of 450 to 10,000 g/mol and on average from at least 1.8 to not more than 3.0 Zerewitinoff-active hydrogen atoms; wherein the ratio of the number of isocyanate groups in component (a) to the number of isocyanate-reactive groups in components (b) and (c) is 0.9:1 to 1.1:1; in the presence of (d) a mixture of polyorganosiloxanes of the general formula (R2SiO)n, in an amount of 0.4 to 10 wt.

Abstract: Light-stable, sinterable, thermoplastic polyurethanes with improved blooming behavior and good thermal stability as well as good technical processability are produced from an aliphatic diisocyanate using one or more chain extenders corresponding to a specified formula. These polyurethanes are particularly useful in the production of molded articles, particularly molded articles for automotive interiors.