Centre National De La Recherche Scientifique

Ipsen Pharma S.a.s.

Other

Societe De Conseils De Recherches Et D'applications Scientifiques (s.c.r.a.s.)

Arkema France

Societe De Conseils De Recherches Et D'applications Scientifiques

Université Paul Sabatier (Toulouse III)

Centre National De La Recherche Scientifique-Cnrs

Ipsen Pharma

Blanca Martin-Vaca

Didier Bourissou

Jean-Bernard Cazaux

Roland Cherif-Cheikh

Guy Bertrand

Heinz Gornitzka

Anca Dumitrescu

Frédéric Ben

Christophe Navarro

Stéphanie Magnet

Magalie Graullier

Frederic Lacombe

Martin Montes

Aurelie Alba

Anne-Paula De Sousa Delgado

Frédéric Lacombe

Lidija Vranicar

Olivier Thillaye Du Boullay

Hanh Nguyen Ngoc

Stéphanie Gazeau-Bureau

Damien Delcroix

Anne De Sousa Delgado

Roland Chérif-cheikh

Roland Cherif-cheikh

Aurélie Alba

Frederic Ben

The present invention relates to a method for preparing a copolymer from at least one cyclic monomer selected from: a lactone, a lactam, a carbonate, a lactide and a glycolide, an oxazoline, an epoxide, a cyclosiloxane, comprising the step consisting of reacting said cyclic monomer in the presence of a substituted phosphorus-containing compound. It also relates to the polymer composition obtained according to this method, as well as the uses thereof, notably as antistatic additives, biocompatible materials, as membranes for treatment of effluents or in electrochemical systems for energy storage.

Method for preparing a polymer from at least one cyclic monomer

The present invention relates to the use of a system composed of a base and of a sulphonamide, as a catalyst for the ring-opening (co)polymerization of lactones. The present invention also relates to novel sulphonamides and to a process for the ring-opening (co)polymerization of lactones comprising the use of sulphonamides in combination with a base as a catalytic system.

Catalytic systems for the ring-opening (co)polymerization of lactones

The use of a catalytic ring-opening lactide and glycolide (co)oligomerization system consisting of a strongly acidic ion-exchange resin-type polymeric catalyst and a (co)oligomerization additive, and a lactide and glycolide (co)oligomerization method using said catalytic system, are disclosed.

Use of a catalytic system for lactide and glycolide (co) oligomerization

A catalytic lactide and glycolide copolymerization system comprising a trifluoromethane sulfonate as a catalyst and copolymerization additive and a copolymerization process.

Catalytic lactide and glycolide (co)polymerization system

The invention relates to a novel method for the synthesis of 2,5-dioxane-1,4-diones having formula (I), comprising the oxidation of the ketone function of a cyclic compound having formula (II), wherein R, R, Rand Rindependently represent the hydrogen atom, halo, (C-C) alkenyl, (C-C)cycloalkyl, cyclohexenyl and a radical having formula &#x2014;(CH)&#x2014;V&#x2014;W. 

Method for synthesis of 2,5-dioxane-1,4-diones

A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.

Polymerization catalysts

The use of stannylenes and germylenes of general formula (I) wherein: M represents a tin or geranium atom; Land Lindependently represent a group of formula: -E(R) (R') (R&#x2033;), -E(R) (R&#x2032;) or -E(R)) or together form a chain of formula -L&#x2032;-A- L&#x2032;; A represents a saturated or unsaturated chain comprising one, two or three elements of group 14; L&#x2032;and L&#x2032;, represent, independently, a group of formula: -E(R) (R&#x2032;)-, E(R)- or -E-; Eis an element of group 14; Eis an element of group 15; Eis an element of group 16; R, R&#x2032;, R&#x2033;, R, R&#x2032;and Rrepresent variable groups as polymerization catalysts of heterocycles.

Use of stannylenes and germylenes as polymerization catalysts for heterocycles

The invention relates to new compounds having an element of group 12 and having a tridentate ligand, a process for their preparation and their use in particular as a polymerization catalyst.

Polymerisation catalysts

Polymerisation catalyst

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Toulouse, France

Blanca Martin-Vaca