C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 77/06 (2006.01) C08L 77/00 (2006.01)
Patent
CA 2086501
The present invention relates to transparent polyamide compositions with a high concentration of chemical agents, the process for preparing them and objects obtained from them. The polyamide compositions consist of 1% to 99% and preferably 40% to 90% by weight of a first polyamide composed of aliphatic units with at least 7 C atoms, isophtalic and terephtalic diacid units, primarily the latter, cycloaliphatic diamine units, and 99% to 1% and preferably 60% to 10% by weight of a semi-crystalline polyamide comprising at least 35% and preferably 50% by weight of an aliphatic unit with at least 7 C atoms.
La présente invention a pour objet des compositions polyamides transparentes à tenue aux agents chimiques élevée, ainsi que leur procédé de préparation et les objets obtenus à partir de celles ci. Les présentes compositions polyamides comprennent de 1 à 99% en poids, de préférence 40 à 90%, d'un premier polyamide constitué de motifs aliphatiques contenant au moins 7 atomes de carbone, de diacides iso- et térephtalique, ce dernier majoritaire, de motifs diamines cycloaliphatiques, et de 99 à 1% en poids, de préférence 60 à 10%, d'un polyamide semi-cristallin constitué d'au moins 35%, de préférence 50%, en poids d'un motif aliphatique contenant au moins 7 atomes de carbone.
Blondel Philippe
Maj Philippe
Elf Atochem S.a.
Robic
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