Essilor International (compagnie Generale D'optique)

Huntsman International LLC

Renault S.a.s.

Solvay Sa

Renault S.a.s.; Solvay Sa

Materia Nova

Ecole Nationale Superieure Des Arts Et Industries Textiles

Ecole Nationale Superieure De Chimie De Lillie

Essilor International

Rhodia Operations

Dow Silicones Corporation

Ecole Nationale Superieure De Chimie De Lille

Ecole Nationale Supérieure Des Arts Et Industries Textiles (ensait)

Imerys Pcc France

Serge Bourbigot

Sophie Duquesne

Didier Sy

Alexandra Roos

Marc Lacroix

Laure Meynie

Virginie Boucher

Fabienne Samyn

Karine Cavalier

Rene Alexander Klein

Chris Ian Lindsay

Giacomo Giannini

René Delobel

Philippe Dubois

Nathalie Cornet

Patrick Vandereecken

Stefan Priemen

Marc Broekaert

Maryska Muller

Eric Devaux

Gaelle Fontaine

Philippe Degee

Michael Alexandre

Marius Murariu

Pierre Bachelet

Charafeddine Jama

Hélène Gallou

Maude Jimenez

Bastien Gardelle

Gaëlle Fontaine

Intumescent coating composition comprising a polyisocyanate, a polyfunctional isocyanate-reactive compound and an intumescent ingredient, wherein the intumescent ingredient contains at least one or more compounds containing phosphorus, nitrogen and boron atoms and the weight ratio phosphorus to nitrogen in said intumescent ingredient is between 0.5/1 to 1.5/1 and the amount of boron is from 1 to 5 wt % based on the coating composition.

Polyisocyanate-based intumescent coating

The invention relates to a formulation suitable to provide polyurethane, the formulation comprising

Polyurethane flame retardant formulation

A method of preparing a transparent polymer material includes mixing mineral nanoparticles selected from nanoparticles of alkaline-earth metal carbonates, alkaline-earth metal sulfates, metallic oxides, oxides of metalloids, and siloxanes, and a composition A including at least one thermoplastic polymer in the molten state selected from polycarbonate (PC), polystyrene (PS) and polymethyl methacrylate (PMMA) in order to obtain a master-batch, the mixture of step i) including at least 25% and at most 75% by weight of the mineral nanoparticles. The master-batch obtained in step i) is mixed with a composition B of a thermoplastic polycarbonate matrix (PCm) in the molten state, to obtain a transparent polymer material including at most 10% by weight of the mineral nanoparticles, preferably at most 5% by weight of the mineral nanoparticles.

Method of preparing a transparent polumer material comprising a thermoplastic polycarbonate and mineral nanoparticles

The present invention provides a method of preparing a transparent polymer material, the method comprising steps i) and ii) in any order, the steps consisting in:

Method for preparing a transparent polymer material including mineral nanoparticles with a shape factor strictly higher than 1.0

A polylactide-based polymer or copolymer (PLA) compositions with improved flame retardancy properties as obtained by conventional melt-blending of PLA polyester matrix (1) with both calcium sulfate (2) and organo-modified layered silicates (OMLS) (3). Combination of CaSOand OMLS exhibits synergistic effects on PLA flame retardancy by both significantly increasing the time to ignition and decreasing the heat release rate per unit area, and promoting non-dripping properties. Moreover, all other properties of PLA remain almost unchanged or are improved as regards to pristine PLA, especially thermal and mechanical properties.

Polylactide-based compositions

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Villeneuve d'Ascq, France

Serge Bourbigot