Solvay (societe Anonyme)

Agence Nationale De Valorisation De La Recherche (anvar)

Rhone-poulenc Fibres

Solvay Polyolefins Europe - Belgium (societete Anonyme)

Solvay Polyolefins, S.a.

Morand Lambla

Marie-Paule Collard

Eric Vandevijver

Raphael Mestanza

Didier Graebling

Dar-Jong Lin

Danny Van Hoyweghen

Philippe Michaud

Jean Russo

Raphaël Mestanza

Jean Terrisse

Rapha&euml;l Mestanza

Polyphenylene sulphide-based compositions essentially containing 60 to 99.5% by weight of polyphenylene sulphide and 0.5 to 40% by weight of a combination (C) containing a compound (C1) chosen from olefinic elastomers containing epoxy groups and a compound (C2) chosen from crosslinking agents containing functional groups which are reactive towards the epoxy groups of the compound (C1) and are chosen from amino, hydroxyl, carboxyl and carboxylic acid anhydride groups. They are obtained by melt-blending polyphenylene sulphide with each of the compounds (C1) and (C2) of the combination (C) successively and in any order.

Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them

Propylene polymer obtained by melt-blending of:

Propylene polymer and process for obtaining it

Composition based on propylene polymer obtained by melt-blending of:

Composition based on propylene polymer process for obtaining it and its

Polyphenylene sulphide-based compositions with high impact strength essentially comprising, by weight, 60 to 99.5 parts of polyphenylene sulphide and 0.5 to 40 parts of a combination C comprising at least one compound Cl chosen form olefinic elastomers comprising epoxy groups and at least one tertiary amine C2. During the preparation of these compositions, the tertiary amine C2 is preferably incorporated in last place with respect to the other constituents.

Polyphenylene sulphide-based compositions with improved impact strength

The present invention relates to a process for obtaining semiordered polyamides-imides. More particularly it consists in performing the polycondensation in two separate stages:

Process for the preparation of semiordered polyamides-imides

There is disclosed a process of dispersion-polymerizing vinyl monomers promoted by free-radical catalysts. This process comprises dispersing under stirring in water a block copolymer of the A-B type wherein A represents a lipophilic block and B a hydrophilic block, adding one or more vinyl monomers containing the promoter and heating the mixture with stirring to the desired temperature. This process enables beads or balls of the desired polymer to be obtained having very regular size distribution.

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Hoenheim, France

Morand Lambla