| Patent application number | Description | Published |
|---|
| 20090171066 | Catalytic lactide and glycolide (co)polymerization system - A catalytic lactide and glycolide copolymerization system comprising a trifluoromethane sulfonate as a catalyst and copolymerization additive and a copolymerization process. | 07-02-2009 |
| 20100036120 | NOVEL METHOD FOR SYNTHESIS OF 1,4-MORPHOLINE-2,5-DIONES - The invention concerns a novel method for synthesis of 1,4-morpholine-2,5-diones of formula (I), wherein: R, R | 02-11-2010 |
| 20100121021 | PROCESS FOR THE PREPARATION OF POLYLACTONES AND POLYLACTAMS - The present invention relates to a process for the preparation of a lactone or lactam homopolymer, comprising the stage consisting in reacting a lactone or lactam with a nonpolymeric initiator comprising at least one hydroxyl or thiol functional group in a nonchlorinated solvent in the presence of a sulfonic acid of formula R—SO | 05-13-2010 |
| 20100121024 | METHOD FOR PRODUCING A COPOLYMER OF AT LEAST ONE CYCLIC MONOMER - The present invention relates to a process for the preparation of a copolymer of at least one cyclic monomer chosen from a lactone, a lactam, a lactide and a glycolide, comprising the stage consisting in reacting said cyclic monomer with a polymeric initiator in the presence of a compound carrying a sulfonic acid functional group. | 05-13-2010 |
| 20100209384 | Sustained release formulations comprising very low molecular weight polymers - The present invention relates to a parenteral, sustained and controlled release, semisolid formulation comprising an end-capped oligomer and at least one active substance without any supplementary viscosity reducing agent or excipient. | 08-19-2010 |
| 20110054144 | NOVEL CATALYTIC SYSTEMS FOR THE RING-OPENING (CO)POLYMERIZATION OF LACTONES - 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. | 03-03-2011 |
| 20120035341 | PROCEDE DE POLYMERISATION PAR VOIE CATALYTIQUE DE 1,4-DIOXANES-2,5-DIONES ET LES POLYMERES CORRESPONDANTS - A method for polymerizing 1,4-dioxane-2,5-diones in the presence of a generally protic initiator and at least one catalyst including at least one metal-free organic compound. The latter is a non-metal organic catalyst most often selected from among pyridines of which DMAP is a derivative, sulfonic acids, polycyclic tertiary amines, phosphazenes, thioureas, thioureas/amines, and guanidines. The invention also relates to polymers obtained by the method. | 02-09-2012 |
| 20120108786 | ORGANIC SYSTEM FOR THE RING-OPENING POLYMERIZATION OF CYCLIC CARBONATES IN ORDER TO OBTAIN (BIO)-POLYCARBONATES - An organocatalytic system, having a sulfonic acid as catalyst, for the polymerization of carbonates, and a polymerization process employing said system to obtain bio-polycarbonates devoid of ether units inserted by decarboxylation. The catalyst system for the ring-opening polymerization reaction of cyclic carbonates is formed of an initiator and, as catalyst, of a sulfonic acid of formula R′—SO | 05-03-2012 |
