Rhodianyl

Other

Jean-François Sassi

Franck Touraud

Christophe Paulo

Christine Vidil

Jean-Pierre Marchand

Sandrine Rochat

Natalia Scherbakoff

Jean-Paul La Grange

Bertrand Bordes

Franck Bouquerel

The invention provides a novel thermoplastic polymer comprising at least one polyalkylene oxide block. It relates to a process for preparing the thermoplastic polymer and to an application of this polymer as a hydrophilicity and/or antistatic modifier, especially in polyamide compositions. These compositions are particularly suitable for the manufacture of yarns, fibres and filaments.

Thermoplastic polymer, use thereof in polyamide compositions with improved hydrophily and anti-staticity

The invention relates to thermoplastic compositions comprising a thermoplastic polyamide matrix and at least one additive which modifies the interaction between the matrix and an agent. The purpose of the invention is to provide an additive which modifies the interaction between a copolyamide-type thermoplastic copolyamide matrix and at least one agent. The aforementioned additive, which comprises at least one hyperbranched functionalised polymer, is not compatible with the matrix. Moreover, said additive can be used for the controlled modification of the interaction between the thermoplastic copolyamide and an internal or external chemical agent. 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 does not contain hyperbranched polymer additive(s). Said mass measurement is taken preferably using a determined protocol P. The invention is suitable for use in moulding, injection moulding, injection/blow moulding, extrusion/blow moulding, extrusion or spinning.

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

The invention relates to hyperbranched copolyamides (HBPAs), to their production and to their use as additives, in particular as melt viscosity modifiers in thermoplastic polymer compositions. This copolyamide is obtained by a reaction between a monomer (I): A&#x2014;R&#x2014;B One of the species R or R' of (I) or (II) is aliphatic, cycloaliphatic or arylaliphatic. For example: A=NHand B=COOH or A=COOH and B=NHwith F=2. A&#x2032;=NHand B&#x2032;=COOH or A&#x2032;=COOH and B&#x2032;=NH. A&#x2014;R&#x2014;B, e.g.: 5-aminoisophthalic acid or 3,5-diaminobenzoic acid and A&#x2032;&#x2014;R&#x2032;&#x2014;B&#x2032;=&#x3b5;-caprolactam. The yarns, fibres, films and moulded parts obtained using polymer compositions (e.g. PA) to which are added HBPA according to the invention are also included in this invention.

Hyperbranched copolyamide, composition based on said hyperbranched copolyamide and method for obtaining same

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Millery, France

Jean-François Sassi