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:
May. 04, 2021
Filed:
May. 30, 2016
Sociedad Anonima Minera Catalano-aragonesa, Saragossa, ES;
Maria Jose Alfonso Alegre, Saragossa, ES;
Patricia Zagalaz Lasierra, Saragossa, ES;
Miguel Angel Caballero Lopez, Saragossa, ES;
SOCIEDAD ANONIMA MINERA CATALANO-ARAGONESA, Saragossa, ES;
Abstract
Method for obtaining biodegradable polymers that has a stage of esterification and/or transesterification and amidation reaction, a stage of prepolycondensation, a stage of polycondensation, a stage of extraction and a stage of drying, eliminating the use of chain extenders. The polymer can achieve all the range of viscosities desired and with an improved colour compared to the polymer from other methods, where chain extenders are used, provide a more efficient process, that is environmentally cleaner and safer for the operatives.