Solvay (societe Anonyme)

Solvay Sa

Imerys Sa

Ardechir Momtaz

Pierre Dournel

Danny Van Hoyweghen

Kermit S Kwan

Karine Cavalier

Ferdinand Hardinghaus

Eric Vandevijver

Fernand Gauthy

Vito Leo

Marc Lacroix

Hans Edouard Miltner

Prakash Druman Trivedi

Sanjay Gurbasappa Charati

Jean-Raphael Caille

Jignesh Markandray Shukla

Gaëlle Rodary

Prakash Punjalal Panchal

Karl Köhler

Julien Pineau

Benoît Lefevre

Christian Jourquin

A polymer composition having improved processing properties, in particular improved crystallization behavior, comprising a semi-aromatic polyamide and a graphene material. The graphene material may be a nano-graphene platelet. The semi-aromatic polyamide may comprise recurring units obtainable by a polycondensation reaction between at least one aromatic diamine and at least one non-aromatic diacid or derivatives thereof and/or recurring units obtainable by a polycondensation reaction between at least one aromatic diacid or derivatives thereof and at least one non-aromatic diamine. The composition may further comprise a polyamide different than the semi-aromatic polyamide. The composition may further comprise a filler.

Polymer compositions comprising semi-aromatic polyamides and graphene materials

Thermoplastic composition comprising at least:

Thermoplastic composition, process for its preparation, and use

Process for the synthesis of polyamides by polycondensation in a closed reactor of one or a number of dicarboxylic acids with a diamine compound containing not less than 60 mol % of-m-xylyenediamine, in which all the amount of diamine compound stoichiometrically necessary for the polycondensation reaction is quickly brought into contact with the molten acid, the temperature of the reaction mixture is raised to a value greater than the melting point of the polyamide produced, the pressure is only allowed to rise to a value sufficient to prevent solidification of the reaction mixture and a substantial loss of diamine compound and, at the end of the reaction, the pressure of the reaction mixture is reduced and the polyamide formed is recovered.

Process for the synthesis of polyamides

Process for the manufacture of poly(arylene sulphide) comprising the reaction of a dihalogenated aromatic compound with alkali metal sulphide in a polar organic solvent in the presence of a compound chosen from sulphimides and their alkali metal salts.

Process for the manufacture of poly(arylene sulphide)

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Ardechir Momtaz