The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2024
Filed:
Oct. 10, 2018
Roquette Freres, Lestrem, FR;
René Saint-Loup, Lomme, FR;
Nicolas Jacquel, Lambersart, FR;
ROQUETTE FRERES, Lestrem, FR;
Abstract
A thermoplastic polyester, and in particular a thermoplastic polyester including at least one 1,4:3,6-dianhydro-L-iditol unit (A), at least one linear aliphatic diol unit (B), at least one aromatic dicarboxylic unit (C), the thermoplastic polyester having a reduced viscosity in solution (25° C.; phenol (50 wt. %):ortho-dichlorobenzene (50 wt. %); 5 g of polyester/L) greater than 25 mL/g. A method for preparing such a polyester, a composition including the same and the use of the thermoplastic polyester for the production of finished or semi-finished plastic articles. The thermoplastic polyester is advantageous in that it has a particularly high incorporation rate of 1,4:3,6-dianhydro-L-iditol (A) units, at least greater than 85%, and most specifically at least greater than 90%.