C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 69/40 (2006.01) C08G 69/44 (2006.01) C08G 81/02 (2006.01)
Patent
CA 2641931
The invention relates to a copolymer comprising polyamide blocks PA alternated with polyether blocks PE, said PA blocks being formed by homopolyamide blocks PA X.Y obtained by polycondensation of: a linear aliphatic diamine having X carbon atoms, and a carboxylic diacid having Y carbon atoms. Said copolymer is characterised in that the crystallinity of block PA is greater than the crystallinity of a PA block of the same size and/or the PA/PE phase separation is greater than than that of a PA12/PTMG copolymer with PA12 blocks of the same size as the PA X.Y blocks and PTMG of the same size as the PE blocks.
L'invention a pour objet un copolymère comprenant des blocs polyamide PA alternant avec des blocs polyéther PE, les blocs PA étant constitués par des blocs homopolyamide PA X.Y, obtenus par polycondensation : d'une diamine aliphatique linéaire ayant X atomes de carbone ; d'un diacide carboxylique ayant Y atomes de carbone ; caractérisé en ce que la cristallinité du bloc PA est > à la cristallinité d'un bloc PA de même taille et/ou la séparation de phase PA/PE est > à celle d'un copolymère PA12/PTMG avec des blocs en PA12 de même taille que les blocs PA X.Y et les blocs PTMG de même taille que les blocs PE.
Arkema France
Robic
LandOfFree
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