Abstract:
The use of alcohols of formula (I) wherein X is selected from hydroxyl and C1-C6 hydroxyalkyl; III) n is an integer from 6 to 10, and R is selected from hydrogen and methyl; or IV) n is 0 or 1, and R is selected from branched C3-C6 alkyl and C5-C6 cycloalkyi; with the proviso that the compound of formula (I) contains 11 to15 carbon atoms. for the reduction of the sensory perception of malodour.
Abstract:
This invention describes a convenient method for the preparation and use of a ruthenium catalyst for a chiral reduction of ketones and imines.
Abstract:
The invention relates to cyclododecyl butan-2-ols, to the use thereof as odoriferous substances and as antimicrobial active substances, to a method for the production thereof, and to products containing these compounds.
Abstract:
The invention relates to a method for catalytically hydrogenating carboxylic acids or the anhydrides or esters thereof into alcohol on heterogeneous catalysts containing hydrogenating elements of groups 6, 7, 8, 9, 10 and 11 and optionally groups 2, 14 and 15 of the periodic table of elements or consisting thereof, in a liquid phase at temperatures of 100-300 DEG C and at pressures of 10-300 bars, whereby 1-3,000 ppm of a basic alkali or earth-alkaline compound in relation to the liquid hydrogenating feed and selected from a group consisting of hydroxides, carbonates, carboxylates and alcoholates is added to the hydrogenating reaction mixture.
Abstract:
Lewis acid-catalysed reaction of alkenes (including cycloalkenes) with an epoxide is a novel reaction useful for synthesis of various fragrance materials (known and novel) and their intermediates.
Abstract:
Gehärtete Epoxidharze sind aufgrund ihrer hervorragenden mechanischen und chemischen Eigenschaften weit verbreitet. Üblicherweise werden Epoxidharz auf Basis von Bisphenol-A- oder Bisphenol-F-diglycidylether eingesetzt, die jedoch wegen ihrer endokrinen Wirkung für viele Bereiche problematisch sind. Die vorliegende Erfindung betrifft Glycidylether von Limonen basierten Diolen und/oder Polyolen und darauf basierende härtbare Epoxidharz-Zusammensetzungen als Alternative zu den Bisphenol-A- oder Bisphenol-F-diglycidylether bzw. den darauf basierenden Epoxidharz-Zusammensetzungen.
Abstract:
The invention relates to a method for the production of alcohols, by catalytic hydrogenation of carbonyl compounds, using a catalyst with 0,01 to 50 wt. % rhenium and 0 to 20 wt. % of a further metal, chosen from Zn, Cu, Ag, Au, Ni, Fe, Cr or V, based upon total catalyst weight, supported on oxidatively pre-treated activated charcoal.
Abstract:
The invention relates to a method for producing alcohols by catalytic hydrogenation of carbonyl compounds on a catalyst containing rhenium on active carbon. According to said method, rhenium is used as a catalyst (calculated as a metal) in a weight ratio to active carbon of 0.0001 -0.5, platinum (calculated as a metal) in a weight ratio to active carbon of 0.0001 0.5 and optionally at least one other metal selected from Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W and V in a weight ratio to active carbon of 0 0.25. The active carbon is not non-oxidatively pre-treated. It is also possible to produce ethers and lactones if the water pressure does not exceed a maximum of 25 bars during treatment. The active carbon in the catalyst can also be non-oxidatively pre-treated