Sheets formed from polyesters including isosorbide

Details Sheets formed from polyesters including isosorbide Sheets formed from polyesters including isosorbide

C - Chemistry, Metallurgy

08

G

C08G 63/66 (2006.01) C08G 63/183 (2006.01) C08G 63/668 (2006.01) C08J 5/18 (2006.01) C08L 67/02 (2006.01)

Patent

CA 2328474

A sheet made of a polyester which includes monomer units of terephthaloyl moieties, ethylene glycol moieties and isosorbide moieties is described. The polyester has an inherent viscosity of at least about 0.35 dL/g when measured as a 1 % (weight/volume) solution of said polyester in o-chlorophenol at a temperature of 25 ~C. The present invention also relates to a method of making the polyester sheet described above and a method of thermoforming the sheet into articles.

L'invention concerne une feuille constituée d'un polyester qui contient des unités monomères de fractions téréphtaloyle, éthylèneglycol et isosorbide. Ce polyester présente une viscosité inhérente d'au moins 0,35 dl/g environ, lorsqu'il est mesuré comme solution à 1 % (poids/volume) dudit polyester dans du o-chlorophénol, à une température de 25 ·C. L'invention concerne également un procédé de fabrication de ladite feuille polyester ainsi qu'un procédé de fabrication d'articles par thermoformage de ladite feuille.

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