Rhodia Operations

Solvay Sa

East China Normal University

Specialty Operations France

Basf France Sas

Stéphane Streiff

Armin Liebens

Dominique Balthasart

Sergio Mastroianni

Avelino Corma

Alexander Lerch

Bing Hong

Marco Piccinini

Miriam Cerro-Alarcón

Jesús Mengual

Gérard Antonini

Peng Ji

Philippe Marion

Peng Wu

David James Wilson

Laurent Garel

Serge Veracini

Zhen Yan

Françoise Igersheim

Fabien Bellenger

Mengjia Wu

Laurent Diguet

Bright Kusema

Fan Jiang

Fangzheng Su

Jianyong Yin

Xinqing Lu

The instant invention concerns a process for fragmenting a polymer chain, comprising an oxidative degradation step wherein the polymer chain is contacted with a reduced form of a metal M and an oxidant such as dioxygen, and wherein the polymer carries covalently bound chemical groups acting as a ligand of said reduced form of the metal M. The invention also relates to methods making use of this fragmentation process as a first step of a degradation process of the polymer especially useful for avoiding the negative impact of a polymer to the environment. In this connection, the invention relates to the use of polymers carrying chemical groups acting as a ligand for a reduced form of a metal M, as a polymer biodegradable in an environment wherein the reduced form of a metal M is present.

Process for fragmenting a polymer

It relates to a microporous aluminotitanosilicate crystalline zeolite, method of preparation and applications thereof. It extends to a catalytic hydroxylation, by reaction of a compound of formula (I) with HOin the presence of a catalyst comprising the zeolite.

Microporous aluminotitanosilicate crystalline zeolite, method of preparation and applications thereof

The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

Method of oxidizing glycolaldehyde using nitric acid

Provided is the use of a lanthanide metal complex as a bleaching catalyst. In particular, the lanthanide metal complex comprises a ligand which is an aromatic compound having at least one electron withdrawing substituent and at least one nucleophilic group. Provided is also a composition containing the lanthanide metal complex.

Composition containing lanthanide metal complex

The present invention relates to a method for preparing primary diamines from amino acid compounds. Specifically, this invention is related to the preparation of a primary diamine from an amino acid and/or its salt by Kolbe electrolysis coupling reaction.

Method for preparing primary diamines by Kolbe electrolysis coupling reaction

Use of a catalyst composition comprising A) a first component containing oxidic compounds comprising aluminum and silicon with a molar ratio of silicon to aluminum of more than 1) B) a second component containing an oxidic compound of silicon wherein the ratio of the number of acidic sites of component A, determined by temperature programmed desorption with ammonia as a base, to the number of acidic sites of component B, determined under the same conditions, is at least 3: in a process for the catalytic depolymerization of plastics waste.

Use of a catalyst composition for the catalytic depolymerization of plastics waste

Use of a catalytic composition parameters comprising oxides of aluminum or oxidic compounds comprising aluminum and silicon with a molar ratio of aluminum to silicon of more than 1 in a process for the catalytic depolymerization of plastics waste.

The present invention relates to a process for the treatment of a composition comprising thermoplastics comprising introducing the composition into a reactor under reduction of oxygen content of the atmosphere, heating the composition in the presence of a solvent to liquefy the thermoplastics, separating insoluble fractions and recovering the liquefied thermoplastics which process is conducted in one reactor.

Process for the treatment of a composition comprising thermoplastics

The present invention relates to a process for the treatment of a composition comprising thermoplastics comprising introducing the composition into a reactor under reduction of oxygen content of the atmosphere, heating the composition in the presence of a solvent to liquefy the thermoplastics, separating insoluble fractions and recovering the liquefied thermoplastics which process is conducted with an aliphatic hydrocarbon as solvent.

A method for preparing an alkyl hydroperoxide obtained by the oxidation of a saturated hydrocarbon using oxygen, preferably of a saturated cyclic hydrocarbon, is described. Also described, is a method for preparing cyclohexyl hydroperoxide by oxidizing cyclohexane with molecular oxygen or a gas containing molecular oxygen preferably in the absence of a catalyst.

Process for the production of an alkyl hydroperoxide

A method for making alkyl hydroperoxide compounds, specifically the preparation of cyclohexyl hydroperoxide is described. The preparation of cyclohexyl hydroperoxide by means of the oxidation of cyclohexane by oxygen in a multi-stage reactor or in reactors connected in series is also described. In these methods, the reactor surfaces in contact with the oxidation medium can be protected by a layer of heat-resistant PFA polymer.

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Shanghai, China

Stéphane Streiff