Polyetheresteramides and compositions of antistatic polymers...

C - Chemistry – Metallurgy – 08 – G

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C08G 69/44 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2355705

The invention relates to polyetheresteramides (B) with polyamide blocks containing dicarboxylic acid sulphonates as chain terminators of the polyamide block or associated with a diamine as one of the monomers making up the polyamide block; and with polyether blocks essentially comprising alkylene oxide units. The invention also relates to polyetheresteramides (B) with polyamide oligomer-type polyamide blocks with low mole weights or copolyamide-type polyamide blocks comprising dicarboxylic acid sulphonates and having polyether blocks which are adducts of alkylene oxide of an aromatic diol. The invention also relates to compositions of antistatic or "breathable" polymers containing a thermoplastic polymer (A) and at least one of the aforementioned polyetheresteramides (B).

L'invention concerne des polyétheresteramides ayant des blocs polyamide comprenant des sulfonates d'acides dicarboxyliques et ayant des blocs polyéthers constitués essentiellement de motifs oxyde d'alkylène, les sulfonates d'acides dicarboxyliques étant présents soit à titre de limitateurs de chaîne de chaque bloc polyamide, soit associés à une diamine à titre d'un des monomères constitutifs de chaque bloc polyamide. L'invention vise également des polyétheresteramides ayant des blocs polyamide du type oligomère de polyamide de faibles masses moléculaires ou du type copolyamide qui comprennent des sulfonates d'acides dicarboxyliques, et ayant des blocs polyéther qui sont des adducts d'oxyde d'alkylène sur un diol aromatique. Les polyétheresteramides selon l'invention sont utiles pour la préparation de compositions de polymères antistatiques ou imperrespirantes, comprenant un polymère thermoplastique et au moins un des polyétheresteramides précédents.

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