Rhodia Polyamide Intermediates

Gala Industries. Inc.

Rhodia Operations

Rhodia Chimie

Performance Polyamides, Sas

Rhone-poulenc Fibres Et Polymeres S.a.

Eric Roche

Jean-Francois Estur

Michael Eloo

Berthold Druschel

Jean-Marie Bernard

Pascal Herve

Matthieu Helft

Franck Touraud

Christophe Paulo

Franck Bouquerel

François Briois

Jean-Francois Briois

Mare Labeille

Philippe Lapersonne

Stéphane Jeol

Jean-François Estur

Jean-François Briois

Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder.

Polyamide beads and method for the production thereof

The present invention relates to an expandable polyamide composition and to a polyamide foam obtained therefrom. This composition comprises a compound comprising at least one isocyanate function, a polyamide and a compound comprising at least one carboxylic acid function. The invention also relates to a process for preparing a polyamide foam from this composition.

Expandable polyamide composition and polyamide foam obtained therefrom

Pearls based on expanded polymers are produced by extruding an expandable composition containing a thermoplastic polymer and an expanding agent, and thereafter cooling and chopping the expanded material thus obtained.

Production of pearls based on expanded polymers

The invention relates to a process for the preparation of particles based on a thermoplastic polymer with a mean diameter of less than 1 mm. The process of the invention comprises more particularly a stage of preparation of a composition comprising the thermoplastic polymer and an additive, in the molten state, of cooling the composition and of disintegration of the thermoplastic polymer dispersion.

Process for the preparation of particles based on a thermoplastic polymer and powder thus obtained

Spherical polyamide particles having a mean particle size of less than 1 mm, notably less than 100 &#x3bc;m, are produced by dispersing the polyamide monomers in an inert liquid and then polymerizing same.

Production of spherical polyamide particles

Polyester filaments and method for manufacturing same

Growing community of inventors

Luzinay, France

Eric Roche