C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 69/40 (2006.01) C08G 69/44 (2006.01)
Patent
CA 2503074
The invention relates to polyamide block and polyether block copolymers in which: the polyether blocks essentially comprise PTMG having a number-average molar mass Mn of between 200 and 400 g/mol; the polyamide blocks comprise a linear (non-cyclic, non-branched) aliphatic semi-crystalline majority monomer and a sufficient quantity of at least one comonomer such that the crystallinity of said blocks is diminished while they remain immiscible with the amorphous polyether blocks; and the Shore D hardness is between 20 and 70. The inventive copolymers can be used to produce numerous different objects and, in particular, sports shoes.
La présente invention concerne des copolymères à blocs polyamides et blocs polyéthers dans lesquels: les blocs polyéthers sont constitués essentiellement de PTMG de masse molaire moyenne en nombre Mn comprise entre 200 et4000 g/mol, les blocs polyamides sont constitués d'un monomère majoritaire semi cristallin aliphatique linéaire (non cyclique, non ramifié) et d'une quantité suffisante d'au moins un comonomère pour diminuer leur cristallinité tout en restant immiscibles avec les blocs amorphes polyéthers, la dureté Shore D est comprise entre 20 et 70. Ces copolymères sont utiles pour fabriquer de nombreux-objets et en particulier des chaussures de sport.
Linemann Annett
Malet Frederic
Arkema
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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