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:
Feb. 23, 1999
Filed:
May. 29, 1996
Wolfgang G Glasser, Blacksburg, VA (US);
Rajesh K Jain, Blacksburg, VA (US);
Center for Innovative Technology, Herndon, VA (US);
Abstract
Chitosan support material is crosslinked using a heat-induced, amidification reaction in non-aqueous solvent. Crosslinking is achieved by the use of dicarboxylic acids which form amide bonds with chitosan. The type and degree of crosslinking can be controlled to tailor mechanical strength, solubility, and functionality, of the resulting chitosan support material. Quaternization and/or cyclodextrin-modification functionalization of the chitosan beads can also be effected in addition to the crosslinking to produce separation materials with great versatility and utility. The invention is applicable to chitosan support materials of various solids contents and geometrical shapes such as beads, fibers, films, and adhesive coatings.