Roquette Freres

Centre National De La Recherche Scientifique

Universite Claude Bernard – Lyon1

Furanix Technologies B.v.

Nicolas Jacquel

René Saint-Loup

Alain Rousseau

Jean-Pierre Pascault

Françoise Fenouillot-Rimlinger

Régis Mercier

Sarah Degras

Gerardus Johannes Maria Gruter

Joseph David Schroeder

Jeffrey John Kolstad

Matheus Adrianus Dam

Laszlo Sipos

Bing Wang

Nicolas Descamps

Jean-Michel Roturier

Hélène Amedro

Jean-Marc Corpart

Marilyne Guillemant

Etienne Fleury

Guillaume Fiey

Françoise Mechin

Héloïse Blache

Françoise Fenouillot

Audrey Dausque

Sébastien Naudin

Thierry Delaunay

Gabriel Degand

Francoise Fenouillot-Rimlinger

Francoise Fenouillot

Rene Saint-Loup

A crystallization method that comprises a step of providing a polyester comprising at least one 1,4:3,6-dianhydrohexitol unit, and a step of crystallizing this semi-crystalline polyester at a pressure of at least 600 mbar absolute. The method according to the invention makes it possible to strongly limit, or even eliminate, the phenomenon of polyester expansion during crystallization. Advantageously, the elimination of the expansion phenomenon through pressure conditions implemented according to the invention thus makes it possible to dispense with obtaining very fragile empty spheres that break when agitated and thus cause the formation of undesirable fine particles.

Method for crystallizing a polyester comprising at least one 1,4:3,6-dianhydrohexitol unit

The invention relates to a process for producing semi-aromatic polyethers based on an aliphatic diol, to semi-aromatic polyethers based on an aliphatic diol obtained by said process, and to the use of said semi-aromatic polyethers based on an aliphatic diol for manufacturing membranes, manufactured parts and coatings.

Process for synthesising semi-aromatic polyethers

The present invention relates to a polymer of the aromatic polyether type, containing a biosourced furan diol, to a method for producing said polymer, and to the use of said polymer for producing membranes.

Aromatic polyethers containing a biosourced furan diol

A thermoplastic polyester, and in particular a thermoplastic polyester including at least one 1,4:3,6-dianhydro-L-iditol unit (A), at least one linear aliphatic diol unit (B), at least one aromatic dicarboxylic unit (C), the thermoplastic polyester having a reduced viscosity in solution (25° C.; phenol (50 wt. %):ortho-dichlorobenzene (50 wt. %); 5 g of polyester/L) greater than 25 mL/g. A method for preparing such a polyester, a composition including the same and the use of the thermoplastic polyester for the production of finished or semi-finished plastic articles. The thermoplastic polyester is advantageous in that it has a particularly high incorporation rate of 1,4:3,6-dianhydro-L-iditol (A) units, at least greater than 85%, and most specifically at least greater than 90%.

Thermoplastic polyester with high incorporation of 1,4:3,6-dianhydro-L-iditol units

The invention relates to a thermoplastic polymer comprising at least one 1,4:3,6-dianhydrohexitol unit (A), at least one alicyclic diol unit (B) other than the 1,4:3,6-dianhydrohexitol units (A) and at least one high-viscosity terephthalic acid unit (C).

High-viscosity polyester with improved impact properties

The present invention relates to a crosslinkable composition for forming a polyurethane coating on different types of substrate. The present invention relates in particular to a polyurethane composition comprising isosorbide as a diol chain extender, and to the polyurethane coating obtained from this composition.

Polyurethane coating comprising isosorbide

A thermoplastic composite comprising a thermoplastic polymer matrix comprising an amorphous polyester containing 1,4: 3,6-dianhydrohexitol units, an alicyclic diol and terephthalic acid, wherein diol component comprises 1,4:3,6-dianhydrohexitol and alicyclic diol in ratio from 0.32 to 0.75; and thermoplastic fibers comprising a semi-crystalline polyester containing 1,4: 3,6-dianhydrohexitol units, an alicyclic diol and terephthalic acid, wherein diol component comprises 1,4:3,6-dianhydrohexitol and alicyclic diol in ratio from 0.05 to 0.30 are disclosed. Methods for producing the polymer composite are also disclosed.

Thermoplastic composite

The invention concerns a method for producing a polyester containing at least one 1,4:3,6-dianhydrohexitol unit comprising: &#x2022;a step of introducing, into a reactor, monomers comprising at least one monomer (A) that is a diacid or a diester and at least one monomer (B) that is a 1,4:3,6-dianhydrohexitol; &#x2022;a step of introducing, into the reactor, a catalytic system comprising either a catalyst comprising the element germanium and a catalyst comprising the element aluminum, or a catalyst comprising the elements germanium and aluminum, or a mixture of said two catalysts; &#x2022;a step of polymerizing said monomers to form the polyester; &#x2022;a step of recovering a polyester composition comprising the polyester and the catalytic system. The invention also concerns a polyester composition containing a catalytic system comprising either a catalyst comprising the element germanium and a catalyst comprising the element aluminum, or a catalyst comprising the elements germanium and aluminum, or a mixture of said two catalysts, and the use of same to reduce the coloring of the polyester.

Method for producing a polyester containing at least one 1,4:3,6-dianhydrohexitol unit with improved colouring

A polyester including at least one furandicarboxylate unit, at least one saturated, linear or branched, diol unit including from 2 to 10 carbon atoms, and at least one bicyclic diol unit, the said bicyclic diol being chosen from: isosorbide, isoidide, isomannide, 2,3:4,5-di-O-methylene-galactitol, and 2,4:3,5-di-O-methylene-D-mannitol. The glass transition temperature of the polyester is greater than or equal to 90&#xb0; C. Processes for preparing this polyester are also described.

Polyesters comprising 2,5-furandicarboxylate and saturated diol units having a high glass transition temperature

A method for measuring the thermal stability of succinic acid includes the following steps: 1) preparing a succinic acid crystal powder having less than 1% residual water content; 2) placing 10 g of the crystal powder in an oven at 220&#xb0; C. for 2 hours; 3) pulverizing and sieving the crystal powder processed in this way, such that the particle size distribution thereof is between 0 and 10%, and preferably between 4 and 6% for particles larger than 500 &#x3bc;m in size, between 20 and 40%, and preferably between 25 and 35% for particles between 200 and 500 &#x3bc;m in size, between 50 and 75% and preferably between 55 and 70% for particles smaller than 200 &#x3bc;m in size; and 4) measuring the color, in a spectrocolorimeter, of the pulverized and sieved powder and determining the average value of the yellow (index 'b').

Method for measuring the thermal stability of a succinic acid crystal intended for the production of polymers

The present invention relates to PBS- and silica-based composites, said composites having a high swelling ability. It also relates to a method of preparing said composites, a method of swelling said composites and films obtained by swelling said composites.

PBS- and silica-based composites

The present invention relates to copolymers, in particular poly(butylenesuccinate-co-furanoate) (PBSF) copolymers, which have advantageous mechanical properties, and also to polymeric compositions comprising them. It also relates to a process for preparing these polymers.

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Lambersart, France

Nicolas Jacquel