Abstract: The present invention relates to a process for producing a shaped body by selective laser sintering of a sinter powder (SP). The sinter powder (SP) comprises at least one semicrystalline polyimide and at least one nylon-6I/6T. The present invention further relates to a shaped body obtainable by the process of the invention and to the use of nylon-6I/6T in a sinter powder (SP) for broadening the sintering window (WSP) of the sinter powder (SP).

Abstract: The present invention relates to a process for producing a shaped body by selective laser sintering of a sinter powder (SP). The sinter powder (SP) comprises at least one semicrystalline polyamide, at least one nylon-6I/6T and at least one polyaryl ether. The present invention further relates to a shaped body obtainable by the process of the invention and to the use of a polyaryl ether in a sinter powder (SP) for broadening the sintering window (WSP) of the sinter powder (SP).

Abstract: The present invention relates to a process for producing a shaped body by selective laser sintering of a sinter powder (SP). The sinter powder (SP) comprises at least one semicrystalline polyamide, at least one nylon-6I/6T and at least one reinforcing agent. The present invention further relates to a shaped body obtainable by the process of the invention and to the use of nylon-6I/6T in a sinter powder (SP) comprising at least one semicrystalline polyamide, at least one nylon-6I/6T and at least one reinforcing agent for broadening the sintering window (WSP) of the sinter powder (SP).

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99.7% by weight of a polyamide, B) from 1 to 30% by weight of an impact modifier, C) from 0.1 to 10% by weight of a copolymer of C1) from 50 to 95% by weight of styrene or substituted styrenes of the general formula I or a mixture of these in which R is an alkyl radical having from 1 to 8 carbon atoms or a hydrogen atom and R1 is an alkyl radical having from 1 to 8 carbon atoms and n has the value 0, 1, 2, or 3, and C2) from 5 to 50% by weight of structural units derived from one or more dicarboxylic anhydrides, D) from 0.001 to 20% by weight of iron powder, E) from 0.

Abstract: The present invention relates to a polyamide composition (PC) which comprises at least one polyamide (P) and at least one additive (A). The present invention further relates to the use of the polyamide composition (PC) in a selective laser sintering process, in an injection molding process, for producing molded articles and in an extrusion process.

Abstract: The present invention relates to a polymer composition comprising at least one polyamide and at least one urea compound of the formula I where x is 1, 2 or 3; R1 and R2 are selected from hydrogen, linear C1-C7-alkyl, branched C3-C10-alkyl, unsubstituted or substituted C3-C12-cycloalkyl, unsubstituted or substituted C3-C12-cycloalkyl-C1-C4-alkyl, unsubstituted or substituted aryl and unsubstituted or substituted aryl-C1-C4-alkyl; and Z is selected from C3-C10-alkanediyl, unsubstituted or substituted arylene, unsubstituted or substituted aryl unsubstituted or substituted ene-C1-C4-alkylene-arylene, unsubstituted or substituted heteroarylene, unsubstituted or substituted heteroarylene-C1-C4-alkylene-heteroarylene, unsubstituted or substituted C5-C8-cycloalkylene, C5-C8-cycloalkylene-C1-C4-alkylene-C5-C8-cycloalkylene, unsubstituted or substituted heterocycloalkylene and heterocycloalkylene-C1-C4-alkylene-heterocycloalkylene.

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99.7% by weight of a polyamide, B) from 1 to 30% by weight of an impact modifier, C) from 0.1 to 10% by weight of a copolymer of C1) from 50 to 95% by weight of styrene or substituted styrenes of the general formula I or a mixture of these in which R is an alkyl radical having from 1 to 8 carbon atoms or a hydrogen atom and R1 is an alkyl radical having from 1 to 8 carbon atoms and n has the value 0, 1, 2, or 3, and C2) from 5 to 50% by weight of structural units derived from one or more dicarboxylic anhydrides, D) from 0.001 to 20% by weight of iron powder, E) from 0.

Abstract: The present invention relates to a thermoplastic moulding composition, comprising at least one thermoplastic polymer A); at least one heat conducting filler B); and at least one halogen-containing flame retardant C). Moreover, the invention relates to the use of the inventive moulding compositions for production of fibers, films or mouldings, to the resultant mouldings and to the use thereof for heat transport.

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99.9% by weight of a thermoplastic polyamide, B) from 0.1 to 20% by weight of a terpolymer obtainable via copolymerization of (B1) from 1 to 70% by weight of at least one electron-deficient olefin, (B2) from 0 to 85% by weight of at least one olefin which, at its olefinic double bond, bears only hydrogen atoms and/or carbon atoms without electron-withdrawing substituents, and (B3) from 1 to 99% by weight of at least one alkoxyvinylsilane, C) from 0 to 50% by weight of a fibrous or particulate filler or a mixture of these, D) from 0 to 50% by weight of other additives, where the total of the percentages by weight of components A) to D) is 100%.

Abstract: The present invention relates to a polymer composition comprising at least one polyamide and at least one urea compound of the formula I where x is 1, 2 or 3; R1 and R2 are selected from hydrogen, linear C1-C7-alkyl, branched C3-C10-alkyl, unsubstituted or substituted C3-C12-cycloalkyl, unsubstituted or substituted C3-C12-cycloalkyl-C1-C4-alkyl, unsubstituted or substituted aryl and unsubstituted or substituted aryl-C1-C4-alkyl; and Z is selected from C3-C10-alkanediyl, unsubstituted or substituted arylene, unsubstituted or substituted aryl unsubstituted or substituted ene-C1-C4-alkylene-arylene, unsubstituted or substituted heteroarylene, unsubstituted or substituted heteroarylene-C1-C4-alkylene-heteroarylene, unsubstituted or substituted C5-C8-cycloalkylene, C5-C8-cycloalkylene-C1-C4-alkylene-C5-C8-cycloalkylene, unsubstituted or substituted heterocycloalkylene and heterocycloalkylene-C1-C4-alkylene-heterocycloalkylene.

Abstract: The present invention relates to the use of at least one urea compound of the formula I where x is 1, 2 or 3; R1 and R2 are selected from hydrogen, linear C1-C7-alkyl, branched C3-C10-alkyl, unsubstituted or substituted C3-C12-cycloalkyl, unsubstituted or substituted C3-C12-cycloalkyl-C1-C4-alkyl, unsubstituted or substituted aryl and unsubstituted or substituted aryl-C1-C4-alkyl; and Z is selected from C3-C10-alkanediyl, unsubstituted or substituted arylene, unsubstituted or substituted arylene-C1-C4-alkylene-arylene, unsubstituted or substituted heteroarylene, unsubstituted or substituted heteroarylene-C1-C4-alkylene-heteroarylene, unsubstituted or substituted C5-C8-cycloalkylene, unsubstituted or substituted C5-C8-cycloalkylene-C1-C4-alkylene-C5-C8-cycloalkylene, unsubstituted or substituted heterocycloalkylene and unsubstituted or substituted heterocycloalkylene-C1-C4-alkylene-heterocycloalkylene for improving at least one solid state property of a polyamide resin.

Abstract: Magnetorheological formulations, processes for preparing the same and uses therefor, the formulations comprising: (a) an ionic liquid comprising anions and cations, and (b) dispersed magnetizable particles having a mean diameter of 0.

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99% by weight of at least one thermoplastic polyamide, B) from 0.01 to 30% by weight of at least one highly branched or hyperbranched polyetheramine, C) from 0 to 70% by weight of further added materials, where the total of the percentages by weight of components A) to C) is 100%; the use of polyetheramines for improving the flowability and/or thermal stability of polyamides; and to the use of the molding compositions for the production of fibers, of foils, or of moldings of any type, and also to the resultant fibers, foils, or moldings.

Abstract: The invention relates to a cellular elastomer which is anisotropic, with anisotropy being defined by the compressive modulus in one of three orthogonal directions being greater than that in the other two directions by a factor of at least 1.5. The invention also relates to a cellular elastomer containing magnetizable particles which have a chain-like alignment along one spatial direction. The invention also relates to a process for producing a cellular elastomer containing magnetiable particles and the use of such elastomers in articles of manufacture.

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99.9% by weight of a thermoplastic polyamide, B) from 0.1 to 20% by weight of a terpolymer obtainable via copolymerization of (B1) from 1 to 70% by weight of at least one electron-deficient olefin, (B2) from 0 to 85% by weight of at least one olefin which, at its olefinic double bond, bears only hydrogen atoms and/or carbon atoms without electron-withdrawing substituents, and (B3) from 1 to 99% by weight of at least one alkoxyvinylsilane, C) from 0 to 50% by weight of a fibrous or particulate filler or a mixture of these, D) from 0 to 50% by weight of other additives, where the total of the percentages by weight of components A) to D) is 100%.

Abstract: The invention relates to a rheometer having a rotatable shaft (1) on which a rotor plate (2) is fastened, and having a measuring instrument (10) for measuring torques exerted on the rotor plate (2) by a substance (6) to be studied during rotation of the shaft (1), a first measurement gap (5) for holding the substance (6) to be studied being formed between a first side (3) of the rotor plate (2) and a first shear face (4) and a second measurement gap (9) for holding the substance (6) to be studied being formed between a second side (7) of the rotor plate (2), opposite the first side, and a second shear face (8). The rheometer contains a magnet for generating a magnetic field in the first and second measurement gaps (5, 9).

Abstract: Thermoplastic molding compositions comprising A) from 10 to 98.95% by weight of at least one thermoplastic polyester, B) from 0.05 to 30% by weight of at least one nanoparticulate oxide and/or oxide hydrate of at least one metal or of at least one semimetal with a number-average primary particle diameter of from 0.5 to 50 nm and with a hydrophobic particle surface, C) from 1 to 60% by weight of at least one graft polymer, composed of c1) from 20 to 80% by weight of a graft base composed of an elastomeric polymer based on alkyl acrylates having from 1 to 8 carbon atoms in the alkyl moiety and/or dienes having a glass transition temperature below 10° C.

Abstract: A method for characterizing magnetorheological fluids using a volume flow rate measurement. The volume flow of the magnetorheological fluid through a capillary is initially measured, with a constant weight force being applied onto the magnetorheological fluid. A magnetic field is then applied to the capillary, and the volume flow of the magnetorheological fluid through the capillary is measured with the magnetic field applied, with a second constant weight force being applied onto the magnetorheological fluid. A device for carrying out the method comprises a container for storing a magnetorheological fluid, wherein the container is connected on one side to a capillary through which the magnetorheological fluid can flow, and is closed on a different side by a movable piston, which presses the magnetorheological fluid through the capillary with a constant weight force, and means for generating a magnetic field are provided in the region of the capillary.

Abstract: The invention relates to a rheometer having a rotatable shaft (1) on which a rotor plate (2) is fastened, and having a measuring instrument (10) for measuring torques exerted on the rotor plate (2) by a substance (6) to be studied during rotation of the shaft (1), a first measurement gap (5) for holding the substance (6) to be studied being formed between a first side (3) of the rotor plate (2) and a first shear face (4) and a second measurement gap (9) for holding the substance (6) to be studied being formed between a second side (7) of the rotor plate (2), opposite the first side, and a second shear face (8). The rheometer contains a magnet for generating a magnetic field in the first and second measurement gaps (5, 9).

Abstract: The invention relates to thermoplastic molding compositions comprising the following components: A) at least one thermoplastic polyamide, B) at least one hyperbranched polyethyleneimine, C) at least one amorphous oxide and/or oxide hydrate of at least one metal or semimetal with a number-average diameter of the primary particles of from 0.5 to 20 nm. The invention further relates to the use of the components B) and C) mentioned, for improving the flowability and/or thermal stability of polyamides, to the use of the molding compositions for the production of fibers, of foils, and of moldings of any type, and also to the resultant fibers, foils, and moldings.