Abstract: A pulverulent composition contains at least one polyamide (PA) powder and is characterized in that the PA powder satisfies the following parameters: a melting point in the range of 240 to 320° C., a melt flow index of 700 cm3/10 min or less, measured at a temperature of 30 to 35° C. above the melting point, and a melt flow index of 300 cm3/10 min or less, measured at a temperature of 10 to 15° C. above the melting point, each time measured at a test load of 5 kg. Additionally, the pulverulent composition has an elongation at break of at least 2.0% after sintering. The invention also relates to a molding that consists of such a pulverulent composition, a use of the pulverulent composition and a process for producing a molding.

Abstract: A powdery composition contains at least one polyamide (PA) powder and is characterized in that the PA powder comprises a first polyamide (A) selected from the group consisting of PA5.9, PA5.10, PA5.11, PA5.12, PA5.13, PA5.14, PA6, PA6.66, PA6.9, PA6.10, PA10.9, PA10.10, PA10.12, PA10.13, PA12.9, copolymers and mixtures thereof, and the PA powder satisfies the following parameters: a melting point in the range of 180 to 240° C., a melt flow index of 400 cm3/10 min or less, measured at a temperature from 50 to 55° C. above the melting point, a melt flow index of 325 cm3/10 min or less, measured at a temperature from 30 to 35° C. above the melting point, and a melt flow index of 250 cm3/10 min or less, measured at a temperature from 10 to 15° C. above the melting point, each time measured at a test load of 5 kg. Additionally, the pulverulent composition has an elongation at break of at least 5.0% after sintering in a dry, untreated condition.

Abstract: The present invention concerns a catalyst containing manganese in elemental or in combined form and containing an element selected from lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium, barium and zinc in elemental or combined form together with a process for producing this catalyst and a process for oxidizing hydrocarbons to epoxides in the presence of the inventive catalyst.

Abstract: The present invention relates to a process for the epoxidation of hydrocarbons. This process comprises reacting at least one hydrocarbon with oxygen or air or nitrous oxide or other gaseous oxidants, in the presence of a mixture comprising at least two elements selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi and Se, on a support with a BET surface area of less than 200 m2/g. The present invention also relates to catalysts suitable for the epoxidation of hydrocarbons, wherein the catalyst comprises a mixture comprising at least two metals selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi and Se, on a support with a BET surface area of less than 200 m2/g.

Abstract: The present invention provides a catalyst for the epoxidation of hydrocarbons with oxygen, a process for the preparation of the catalyst, and a process for the epoxidation of hydrocarbons with oxygen in the presence of the catalyst.

Abstract: The present invention relates to a process for the epoxidation of hydrocarbons. This process comprises reacting at least one hydrocarbon with oxygen or air or nitrous oxide or other gaseous oxidants, in the presence of a mixture comprising at least two elements selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi and Se, on a support with a BET surface area of less than 200 m2/g. The present invention also relates to catalysts suitable for the epoxidation of hydrocarbons, wherein the catalyst comprises a mixture comprising at least two metals selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi and Se, on a support with a BET surface area of less than 200 m2/g.