Arkema France

Inci Turan-Altuntas

Quentin P Pineau

Mathieu Sabard

Philippe Blondel

Yves Deyrail

Patrick Dang

René-Paul Eustache

Atsushi Yoshitake

Martin Pouzet

Quentin Patrick Pineau

Yves Derail

The invention relates to a block copolymer comprising at least one rigid polyamide block and at least one flexible block, characterized in that the flexible block has an NH/OH ratio of concentrations of amine chain ends to alcohol chain ends which is within the range from 30 to 150, said concentrations being measured byH NMR (TF/CDCl). The invention also relates to the use of a flexible block for manufacturing a copolymer containing polyamide blocks and flexible blocks that is both hydrolysis-resistant and CO-permeable, with a permeability to COof at least 10 000 cm/m/24 h/atm for a 25 &#x3bc;m film of said copolymer, characterized in that said flexible block has a ratio of amine chain ends to acid chain ends which is within the range from 30 to 150.

Hydrolysis-resistant, CO-permeable block copolymer

The present invention relates to a copolymer with a rigid polyamide block and a flexible polyether or polyester block, wherein said polyamide block is semicrystalline and consists of a copolyamide of W/Y.Z type, wherein:

PEBA-based composition and use thereof for producing a fatigue-resistant transparent object

The invention relates to a copolymer having polyamide PA blocks and polyether PE blocks, in which PA is of diamine.diacid X.Y type; X, the number of carbons of the diamine, is within the range from 6 to 14, and Y, the number of carbons of the diacid, is within the range from 6 to 18. The invention also relates to the use of the said copolymer in a process of direct adhesion between two TPE materials for increasing the peel strength between these materials.

PEBA for direct adhesion to TPE

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Val de Reuil, France

Inci Turan-Altuntas