Arkema France

Albert Blum

Serge Hub

Isabelle Tartarin

Philippe Maj

Jacques Cochet

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

An aqueous emulsion composition of organic peroxide, including from 10 to 65% by weight of one or a plurality of organic peroxides, from 2 to 25% by weight of at least one antifreeze agent, from 0.01 to 10% by weight of at least one emulsifying agent, optionally at least one additive, water, of which the quantity is defined in order to form the remainder of the total composition (100%), wherein the emulsifying agent is a colloid agent of a polyvinyl acetate having a degree of hydrolysis greater than 80% and a viscosity, measured in solution in water at 4% by weight at 20&#xb0; C., less than or equal to 5 mPa&#xb7;s, said viscosity being measured with a Brookfield RVT viscometer, needle no. 3, 20 rpm, in accordance with the ISO 2555 standard. Also, to the method of preparing same and the use thereof.

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Weissenhorn, Germany

Albert Blum