Abstract:
The invention relates to a method for producing 4-pentenoic acid, at least comprising the oxidation of a mixture (G) containing 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide and to the use of a mixture (G) containing 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide for producing 4-pentenoic acid. The invention also relates to the mixture (G) which is obtained as an auxiliary product from the oxidation of cyclopentene to cyclopentanone by means of dinitrogen monoxide.
Abstract:
Method for producing glycidyl esters, characterized in that carbonate esters of the formula I are converted to glycidyl esters of the formula II in the presence of a homogeneous catalyst with the cleaving of carbon dioxide, where R in the above formulas stands for an organic radical with 1 to 20 C atoms.
Abstract:
The invention relates to copolymers comprising C14 to C50 olefins and at least two different olefin dicarboxylic acid esters and optionally maleic acid or maleic acid derivatives. The olefin dicarboxylic acid esters are, first, esters having linear C18 to C50 alkyl groups and, second, esters having short-chain linear, branched, or cyclic alkyl groups or esters having aromatic groups. The invention further relates to a method for producing such copolymers and to the use thereof as pour point depressants for crude oil, mineral oil, and/or mineral oil products, preferably as pour point depressants for crude oil.
Title translation:POLYMERE ZUSAMMENSETZUNGEN AUS ETHYLEN-VINYLESTER-COPOLYMEREN烷基(甲基)丙烯酸酯,VERFAHREN ZU DEREN HERSTELLUNG UND DEREN VERWENDUNG ALS POUR-POINT-DEPRESSANTSFÜRROHÖLE,MINERALÖLEODERMINERALÖLPRODUKTE
Abstract:
A continuous process for the production of propylene oxide comprising reacting propene with hydrogen peroxide in methanolic solution in the presence of a titanium silicalite-1 catalyst to obtain propylene oxide, wherein a reaction feed comprising propene, methanol and hydrogen peroxide is introduced into a reactor, said reaction feed containing potassium cations and phosphorus in the form of anions of at least one phosphorus oxyacid.
Abstract:
The invention relates to a method for producing tetracarboxylic acids of general formula (I) or salts thereof, characterized in that at least one compound of general formulas (IIa) or (IIb) is: (a) firstly reacted with at least one epoxidizing reagent, and; (b) afterwards, it is oxidized with nitric acid or with at least one nitrogen oxide, the variables being defined as follows: R1 and R2 are the same or different and are selected among hydrogen, phenyl and C1-C10 alkyl.