Liquid crystalline poly(ester-amides)

Details Liquid crystalline poly(ester-amides) Liquid crystalline poly(ester-amides)

C - Chemistry, Metallurgy

08

G

C08G 69/44 (2006.01) C09K 19/38 (2006.01)

Patent

CA 2257270

Disclosed herein are thermotropic liquid crystalline poly(ester-amides) containing repeat units derived from aliphatic diamines and other monomers, such as aromatic diols, aromatic dicarboxylic acids, aromatic hydroxycarboxylic acids, and optionally aliphatic diols. The polymers are particularly useful as films and in multilayer structures as barrier layers because of their relatively low permeability to various compounds.

L'invention concerne des poly(ester-amides) à cristaux liquides qui contiennent des unités de répétition dérivées de diamines aliphatiques et d'autres monomères tels que des diols aromatiques, des acides dicarboxyliques aromatiques, des acides hydroxycarboxyliques aromatiques et, en option, des diols aliphatiques. Grâce à leur perméabilité relativement basse à divers composés, lesdits polymères sont particulièrement utiles en tant que films ou en tant que couches barrières dans des structures multicouches.

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