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:
Dec. 09, 2003
Filed:
Aug. 15, 2001
Marek Weltrowski, Quebec, CA;
Michel Morcellet, Villeneuve d'Ascq, FR;
Bernard Martel, Erquinghem Lys, FR;
Universite des Sciences et Technologies de Lille, Villeneuve d'Ascq, FR;
Abstract
The present invention concerns a process for preparing copolymers of cyclodextrin(s) and/or cyclodextrin derivative(s), characterized by the following operations: (a) preparing a solid state mixture of cyclodextrin(s) and/or cyclodextrin derivative(s) and/or inclusion complex(es) of cyclodextrin(s) and/or cyclodextrin derivative(s) and a poly(carboxylic) acid and/or a poly(carboxylic) acid anhydride or a mixture of poly(carboxylic) acid(s) and/or poly(carboxylic) acid anhydride(s), and optionally, a catalyst; and (b) heating the solid mixture to a temperature in the range 100° C. to 200° C. for a period in the range 1 min to 60 min, preferably 30 min or substantially 30 min. The present invention also concerns soluble and insoluble compounds of cyclodextrin(s) and/or cyclodextrin derivative(s) or their inclusion complexes with at least one poly(carboxylic) acid.