摘要:
Process of preparation of alcohols by the reaction of an organic halide with a carbonyl compound in an organic solvent, in the presence of metallic manganese, followed by hydrolysis of the reaction product; the reaction is initiated and activated by an ester present in the reaction medium.
摘要:
Process of preparation of secondary or tertiary alcohols by the action of an organic halide on metallic manganese, in the presence of a carbonyl compound in a solvent followed by hydrolysis; a compound of a metal of Groups II to VIII of the Periodic Classification of the Elements, less electropositive than manganese, is present in the reaction medium.
摘要:
Manganese bromide solution for use in the formation of organomanganese compounds, applicable to the synthesis of organic products, particularly ketones.
摘要:
Process of preparation of ketones by the reaction of an organo-metallic compound with a compound carrying a carbonyl, within a solvent, in the presence of a manganous salt as catalyst. The manganous salt is in the form of a double salt of Mn and an alkali metal cation.
摘要:
The froth flotation of a metal sulfide mineral is carried out using a thioamide as the collector in which the thioamide is of the formula ##STR1## R designating C.sub.5 to C.sub.17 alkyls, R' being H or (CH.sub.2).sub.n OR" and n an integer of 1 to 6, while Z is --OR" or ##STR2## where R" means H, CH.sub.3 or C.sub.2 H.sub.5.
摘要翻译:使用硫代酰胺作为收集器进行金属硫化物矿物的泡沫浮选,其中硫代酰胺具有式为C 5 -C 17烷基,R'为H或(CH 2)nOR“,n为整数 为1至6,而Z为-OR“或”IMAGE“,其中R”表示H,CH 3或C 2 H 5。
摘要:
Process of enrichment of minerals by flotation by means of a collector comprising a thio-compound, the thio-compound being a straight or branched dialkyl or dialkenyl polysulphide.
摘要:
Antioxidant-containing polyolefin composition containing a polyolefin and an antioxidant compound having the general formula: ##STR1## wherein R, R', X and Y are the same or different and are selected from alkyl, phenyl, cyclohexyl, a mono or polyfunctional carboxylic acid ester, hydroxyalkyl, and aralkyl, which groups may be unsubstituted or substituted, linear or branched, or cyclic, and p indicates a degree of polymerization and is at least 2.
摘要:
Process for the preparation of an organic dithio-acid by reaction of the corresponding dithio-ester and an alkali metal or alkaline earth metal hydrosulphide in a solvent in the presence of an excess of H.sub.2 S and treatment with a mineral acid. The dithioic acids so obtained can be utilized as collectors for the flotation of minerals.