Montedison S.p.a.

Montedison Fibre S.p.a.

Giuseppe Caprara

Franco Gozzo

Paolo Roffia

Carlo Fumagalli

Paolo Piccardi

Giuseppe Paparatto

Vincenzo Caprioli

Augusto Menconi

Luigi Cassar

Francesco Corda

Enrico Bosone

Lamberto Roberti

Salvatore Scardigno

Luigi Rivolta

Ettore Santoro

There are described 3-phenoxy-benzyl or .alpha.-cyano-3-phenoxy-benzyl esters of 2,2-dimethyl-cyclopropanecarboxylic acids substituted in position 3 by a dienic polyhalogenated chain, as well as their use as insecticides and acaricides. Moreover, there are also described the intermediates for their preparation and processes for their preparation.

Pyrethroids

A process for stereospecifically synthesizing lower alkyl esters of the cis-2,2-dimethyl-3-(.beta.-fluoro-.beta.-trifluoromethyl-vinyl)-cyclopropa necarboxylic acid.

Process for stereoselectively synthesizing cyclopropane carboxylates

There is provided an improvement in the process for the preparation of organic monoesters of vicinal glycols and the corresponding free glycols by reacting an olefin with oxygen, water and a carboxylic acid, in the liquid phase, at an initial pH of lower than 7, the improvement comprising contacting the reaction mixture with a catalyst system consisting essentially of (i) iodine or an iodine compound selected from the group consisting essentially of copper iodide, manganese iodide, cerium iodide, an alkali metal iodide, an alkali earth metal iodide and the iodohydride of the olefin, (ii) a copper compound selected from the group consisting essentially of copper oxide, copper hydroxide, copper carbonate, copper iodide, and a copper salt of the carboxylic acid, and (iii) an activating ion selected from the group consisting of manganese cation, cerium cation, an alkali metal cation, an alkaline earth metal cation, nitric anion or a mixture of any of the foregoing, wherein the molar ratio of the carboxylic acid to water is lower than 1, the molar ratio of copper to water is equal to or lower than 2 moles of copper per 100 moles of water, and the molar ratio of iodine to copper is lower than 1.

Process for the manufacture of glycols and glycol nono-esters

A process is disclosed for preparing glycolic acid and its polymers starting from formaldehyde, wherein the formaldehyde is reacted with carbon monoxide in concentrated H.sub.2 SO.sub.4 as reaction medium, in the presence of a catalyst based on a compound of Cu (I) or of Ag, and at a temperature ranging from 0.degree. to 90.degree. C and at a pressure between 0.1 and 30 atmospheres.

Process for preparing glycolic acid and its polymers

The present invention concerns a process for preparing of alkylene carbonates, and more particularly it relates to a process for the direct preparation of alkylene carbonates from olefines. More particularly, the present invention relates to a direct process for the preparation of alkylene carbonates, characterized in that an olefine selected from the group consisting of linear olefines and cyclic olefins having from 2 to 15 carbon atoms is reacted in a liquid phase with carbon dioxide in the presence of a gas selected from the group of oxygen and air and in the presence of a catalytic system consisting of:

Process for the preparation of alkylene carbonates

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Milan, Italy

Giuseppe Caprara