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. 20, 1987
Filed:
Dec. 14, 1984
Applicant:
Inventors:
Lothar Brandt, Wiesbaden, DE;
Utz-Hellmuth Felcht, Bad Soden-Neuenhain, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ;
U.S. Cl.
CPC ...
536103 ; 536 46 ;
Abstract
The novel water-soluble compounds are the ethyl ether and the N,N-dialkyl(C.sub.1 to C.sub.4)aminoethyl ethers of .beta.-cyclodextrin (.beta.-CD). The process for the preparation of these ethers is performed by reacting .beta.-CD with an etherifying agent in a basic liquid reaction medium. The reaction medium contains an alkali-metal hydroxide, water and at least one water-miscible organic solvent (for example, dimethoxyethane or isopropanol).