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:
Jul. 16, 1996
Filed:
Dec. 13, 1994
Rolf Hirsenkorn, Munchen, DE;
Consortium fur elektrochemische Industrie GmbH, Munchen, DE;
Abstract
A process for preparing amino-functional cyclodextrin derivatives has an amino function which is linked to the cyclodextrin (CD) via a spacer. Compositions containing CD derivatives are prepared by this process. In this process, .alpha.-cyclodextrin, .beta.-cyclodextrin or .gamma.-cyclodextrin, or their partially substituted derivatives, is reacted individually or in arbitrary mixture with at least one cyclic carbamic ester. The CD derivatives, as regards the listed amino substituents, have an average degree of molar substitution per anhydroglucose unit (MS) of 0.01-0.2 and a proportion of monoamino-substituted CD derivatives which is greater than 70%.