Rhodia Operations

Rhodia Engineering Plastics S.r.l.

Rhodianyl

Performance Polyamides, Sas

Florence Clement

Nicolangelo Peduto

Caroll Vergelati

Franck Touraud

Olivier Andres

Christophe Lapierre

Joël Varlet

Sandrine Rochat

Natalia Scherbakoff

Frédéric Tronc

Polyamide compositions and articles shaped therefrom have good dimensional stability and contain at least one novolac resin and nanometric flake structure filler material; the articles shaped therefrom, e.g., by injection molding, are useful in a various of applications, for example as engineering plastics.

Polyamide compositions

Thermoplastic compositions containing a polyamide and/or polyester matrix and a variety of additives have high fluidity and can be shaped into plastic articles with good mechanical properties and an improved surface appearance.

Polyamide and/or polyester matrix thermoplastic compositions and articles shaped therefrom

The invention relates to thermoplastic compositions comprising a polymer matrix and an additive which modifies the rheological behavior of the matrix in the molten state. The purpose of the invention is to provide a preferably non-reactive additive which can be dispersed in the matrix and which can be used to obtain a good compromise in terms of rheological properties/mechanical properties. According to the invention, the additive is a hyperbranched polymer which is functionalized by R&#x3c;2&#x3e; radicals, R&#x3c;2&#x3e; being a radical of the following type: substituted or non-substituted hydrocarbon, of the silicon type, linear or branched alkyl, aromatic, arylalkyl, alkylaryl or cycloaliphatic, which can comprise one or more unsaturations and/or one or more heteroatoms. Preferably, the composition does not contain hyperbranched polymers which produce therein a reduction in the molar mass of matrix M which is greater than or equal to 7% in relation to a sample composition which comprises matrix M but which does not contain hyperbranched polymer additive(s). Said mass measurement is taken preferably using a predetermined protocol P. The invention is suitable for molding, extrusion, engineered plastics, wires and fibers.

Thermoplastic polymer composition comprising a hyperbranched polymer and articles made using said composition

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Lyons, France

Florence Clement