Rhodia Operations

Ifp Energies Nouvelles

Pascal Pitiot

Laurent Garel

Jean-Christophe Bigouraux

Stéphanie Normand

Mikel Morvan

Sébastien Lomel

Daniel Amoros

Loïc Baussaron

Bruno Heinisch

Jean-Louis Grieneisen

Roberto Company

Thierry Gisbert

Mathias Brehelin

Alexandre Tresmondi

The present invention relates to compositions for enhanced oil recovery, comprising:

Sulphonated internal ketone-based formulations for assisted recovery of oil

The present invention relates to a method for the hydroxylation of phenols and phenol ethers by means of hydrogen peroxide. The invention specifically relates to a method for the hydroxylation of phenol by means of the hydrogen peroxide. The method of the invention for the hydroxylation of a phenol or phenol ether by means of reacting said phenol or phenol ether with the hydrogen peroxide in the presence of an acid catalyst is characterized in that it includes mixing a phenol or phenol ether with a hydrogen peroxide solution in a mixing device under conditions enabling the conversion rate of the hydrogen peroxide to be minimized, and in that said reaction mixture is then placed in a piston flow reactor where the reaction leading to the production of the hydroxylated material takes place, the acid catalyst being fed into the mixing device and/or into the piston flow reactor.

Method for the hydroxylation of phenols and phenol ethers

A method for hydroxylating phenols and phenol ethers using hydrogen peroxide and specifically, a method for hydroxylating phenol using hydrogen peroxide. The method for hydroxylating a phenolic substrate selected from a phenol or a phenol ether by reacting such phenolic substrate with hydrogen peroxide in the presence of an acid catalyst comprises the following steps, implemented consecutively or simultaneously: a first step consisting of mixing a phenolic substrate with a hydrogen peroxide solution under conditions in which the temperature is sufficient for the initial phenolic substrate to remain liquid and for minimizing the conversion rate of the hydrogen peroxide; a second step consisting of carrying out the phenolic substrate hydroxylation reaction under adiabatic conditions, the acid catalyst being added at the mixing stage and/or at the beginning of the hydroxylation reaction; and a third step, if necessary, consisting of recovering the hydroxylated product.

Method for hydroxylating phenols and phenol ethers

The present invention relates to a method for continuously preparing a betaine aqueous solution, including the reaction of an amine with an &#x3c9;-halocarboxylic acid, in the presence of water and a base. Said method is characterized in that it is carried out in a device consisting of at least two consecutive reactors (R1) and (R2), the reactor (R2) being a tubular reactor.

Continuous method for manufacturing betaine aqueous solution

The invention relates to a method for preparing optionally substituted P-hydroxymandelic compounds and derivatives thereof. The method for preparing the mandelic compounds of the invention comprises condensing in water, in the presence of an alkaline agent, an aromatic compound bearing at least one hydroxyl group and having a free para position, with glycoxylic acid, wherein said method is characterised in that said reaction is carried out in a piston-flow reactor.

Method for preparing optionally substituted p-hydroxymandelic compounds and derivatives thereof

Growing community of inventors

Lyons, France

Pascal Pitiot