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A hydroformylation process comprising reacting a feedstock composition comprising a compound having at least one olefinic carbon-to-carbon bond with hydrogen and carbon monoxide in the presence of an organophosphine modified cobalt hydroformylation catalyst, wherein the hydroformylation process is carried out in at least two reaction zones, wherein the at least two reaction zones comprise an earlier reaction zone and a later reaction zone, wherein the temperature of the later reaction zone is at...
Disclosed is a process to increase adhesion between two adjacent layers. The process comprises roughening the surface of one layer followed by chlorination of the roughened surface and joining of the layers, or treating the surface of one layer with a silicone-based adhesion promoter and joining the layers. In one preferred embodiment the process comprises roughening the surface of one layer, followed by chlorination of the roughened surface, joining of the layers and post-treatment of the molde...
A formaldehyde-containing product is separated from a formalin solution containing formaldehyde, water, and methanol by distilling in the presence of a water entraining compound, especially methyl propionate or methyl methacrylate. The product contains substantially less water than in the solution and may be used, for example, in a further process which requires a source of formaldehyde containing a relatively low level of water, for example, the catalyzed reaction of methy propionate with forma...
The present invention provides a process for the preparation of a compound of formula (I): wherein R.sup.1 is C.sub.1-6 alkyl; R.sup.2 and R.sup.3 are, independently, C.sub.1-6 alkyl; and R.sup.4 is C.sub.1-6 alkyl or benzyl (wherein the phenyl ring of benzyl is optionally substituted by nitro, S(O).sub.2(C.sub.1-4 alkyl), cyano, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C(O)(C.sub.1-4 alkyl), N(C.sub.1-6 alkyl).sub.2, CF.sub.3 or OCF.sub.3); the process comprising reacting a compound of formula (II): ...
In accordance with the present invention, a process for repairing metal workpieces, such as turbine engine components, is provided. The process comprises the steps of forming a braze paste containing a first nickel base alloy material containing boron and chromium and a second nickel base alloy material containing chromium and cobalt, applying the brazing paste to an area of the metal workpiece containing at least one crack, and subjecting the workpiece and the brazing paste to a brazing cycle b...
The present invention relates to a process for preparing 5-chloro-N-({(5S)-2-oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1,3-oxazolidin-- 5-yl}methyl)-2-thiophenecarboxamide starting from 2-[(2S)-2-oxiranylmethyl]-1H-isoindole-1,3(2H)-dione, 4-(4-aminophenyl)-3-morpholinone and 5-chlorothiophene-2-carbonyl chloride.
The invention relates to a method for the stabilization of the production capacity of an extraction plant extracting metals in a process, where the metal content of the feed solution varies. For the stabilization of capacity, the extraction cells and their piping are constructed and situated in such a way, that the extraction stages can be connected in different combinations, either in parallel or in a series. The method is especially suitable for the copper extraction process.
A water-based, shear-thinning process fluid comprises bentonite, aluminium hydroxide particles, and salt. The median diameter (by weight) of the aluminium hydroxide particles does not exceed 2 .mu.m.
A process for the preparation of a target fermentation product comprising cultivation of an aerobic microorganism to produce such product, wherein in the microorganism the efficiency of the respiratory chain is increased, transformed and novel nucleotide sequences.
A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of an epoxidation catalyst comprising a transition metal zeolite and a noble metal to produce a product stream comprising an epoxide and an alkane. The alkane is separated and oxidized to at least one oxygenated product.
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