Arkema France

Philippe Maj

Serge Hub

Bruno Van Hemelryck

Martin Möllers

Olaf Tietze

Isabelle Tartarin

Sandra Grimaldi

Georges Martino-Gauchi

Albert Blum

Jean-Marc Corpart

Ralf Wittlinger

Martin Moellers

Friedrich Schnell

The present invention relates to a method for purifying a mixture containing at least one alkyl hydroperoxide, preferably tert-butyl hydroperoxide or tert-amyl hydroperoxide, and at least one corresponding dialkyl hydroperoxide, said method comprising at least one step of extraction with water and at least one separation step which is carried out within the aqueous phase, obtained following the extraction step, in order to recover an aqueous solution which is rich in alkyl hydroperoxide. The invention also relates to an aqueous composition which is rich in alkyl hydroperoxide and contains at least 0.1% by weight of dialkyl peroxide in relation to the total weight of the composition.

Method for purifying alkyl hydroperoxide by extraction with water and separation of the aqueous phase

The invention relates to a method for purifying an alkyl hydroperoxide from dialkyl peroxide thereof, comprising a step of distillation in the presence of alcohol and water followed by extraction of the condensates using a hydrocarbon or a hydrocarbon blend.

Purification of alkyl hydroperoxide by extractive distillation

The present invention relates to a process for the concentration of a water-soluble organic peroxide, preferably an alkyl hydroperoxide, by reverse osmosis as well as to a process for the separation of a water-soluble organic peroxide and of a water-insoluble compound.

Method for concentrating a water-soluble organic peroxide

The present invention relates to a liquid composition comprising at least one dialkyl peroxide, in liquid form at ambient temperature, at a content comprised within a range of from 75 to 77% by weight relative to the total weight of the composition, and at least one mineral oil with viscosity greater than 15 mPa&#xb7;s, measured at a temperature of 10&#xb0; C. and at a shear rate of 1000 s. Furthermore, the invention relates to the use of said composition to modify the melt rheology of the polypropylene.

Dialkyl peroxide composition for modifying the rheology of polypropylene in molten state

The present invention relates to a container provided with heat insulation means (), characterized in that the heat insulation means () are removable and consist of a partition having a multilayered structure, or films, arranged between the wall of the tank () and at least the walls of two of the above-mentioned sides () as well as the upper surface () of the container (). The invention further relates to the use of such heat insulation means () in a conventional container ().

Container for storing and transporting heat-sensitive products

The present invention concerns a method and an apparatus () for a continuous preparation of organic peroxides, with the reactor comprising at least one flow channel () configured as a reaction zone; an inlet system () in fluid communication with a first end of the at least one flow channel and configured for introducing two or more substances or a combination of substances into the at least one flow channel; an outlet system () in fluid communication with a second end of the at least one flow channel, the second end being located downstream of the first end and the outlet system being configured for extracting a reaction product present at the second end; an oscillatory system () configured for superimposing an oscillatory flow on the flow of substances passing through the at least one flow channel, the oscillatory being effected in at least a section of the at least one flow channel; and a controller configured to implement the method by controlling the inlet system to introduce, according to a first time characteristic, at least two substances or a combination of substances into the at least one flow channel, the oscillatory system to superimpose an oscillatory flow on at least a part of the flow of substances passing through the at least one flow channel, and the outlet system to extract, on an ongoing basis, the reaction product formed in the flow channel from the substances introduced such that the output mass flow rate corresponding to the sum of the input mass flow rates.

Synthesis of organic peroxydes using an oscillatory flow mixing reactor

A method for preparing peroxide, including a step of treating, in a reaction medium, a component having at least one tertiary alcohol grouping with a compound having at least one tertiary hydroperoxide function in the presence of a catalyst, said method being characterized in that the catalyst includes a sulphonic acid and a inorganic acid, the molar ratio between the sulphonic acid and the aforementioned component including at least one tertiary alcohol grouping ranges from 0.05 to 0.8, and the molar ratio between the inorganic acid and the aforementioned component including at least one tertiary alcohol grouping ranges from 0.05 to 0.8. Also, to the peroxide resulting directly from said preparation method.

Method for preparing organic peroxides

The field of transporting hazardous materials and specifically to a pallet that holds containers for receiving a liquid, for example an organic peroxide, which, for safety reasons, can only be transported in small amounts. A device that includes 2 to 20, and preferably 2 to 10, containers attached onto a pallet, said containers being intended to contain a hazardous material in liquid form, the containers all having a volume greater than 100 L and preferably between 120 to 300 L.

Device consisting of containers attached to a pallet for transporting hazardous materials

The present application relates to a method for manufacturing tert-butyl hydroperoxide that includes the following steps: a) fermenting renewable raw materials and optionally purifying the same to produce a mixture containing at least butanol; b) dehydrating the butanol into butane; c) converting the butane into isobutene and optionally hydrating the isobutene to produce tert-butanol; d) reacting the product of step c) with hydrogen peroxide so as to produce tert-butyl hydroperoxide; and e) isolating the tert-butyl hydroperoxide. The invention also relates to tert-butyl hydroperoxide containing carbon atoms from renewable resources, to the compositions containing said tert-butyl hydroperoxide, and also relates to the use thereof as a polymerization initiator.

Manufacture of tertiobutyl hydroperoxyde from renewable materials, tertiobutyl hydroperoxide thus obtained, and uses thereof

The present invention relates to a process for the continuous preparation of selected organic peroxides using plate exchangers having a high heat exchange capacity.

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Brignais, France

Philippe Maj