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:
Sep. 24, 2002
Filed:
Aug. 14, 2000
Joseph A. Akkara, Holliston, MA (US);
Ferdinando F. Bruno, Andover, MA (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Protease enzyme from and Bacillus sp. Catalyzes the acylation of organic solvent-insoluble macromolecules in isooctane solution containing vinyl esters of fatty acids, lactones or lactides as acyl donors. The reaction occurs only when the enzyme is solubilized via ion-pairing with the anionic surfactant dioctylsulfosuccinate, sodium salt (AOT). Enzyme based acylation was demonstrated in macromolecules such as silk proteins. These macromolecules are reactive either as cryogenically milled powder suspended in the organic solvent or as a thin film deposited onto ZnSe slides. This selective acylation approach represents the first attempt at using enzymes to modify organic-insoluble macromolecules in nonaqueous media.