Method for providing resistance to biofouling in a porous support

US8268395B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• John S. Chapman · McKeesport, US
• Jiang Ding · Wilmington, US
• Yu-Ling Hsiao · Villanova, US
• Christian Peter Lenges · Wilmington, US
• Yanhui Niu · College Station, US
• Stefan Reinartz · Waxhaw, US
• CHERYL MARIE STANCIK · Wegberg, DE
• Judith Johanna Van Gorp · Wegberg, DE

Key dates

• Filing date: Apr 6, 2006
• Grant date: Sep 18, 2012
• Expiry date: Oct 25, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249921
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention is a process useful for providing a treated support comprising a porous nanoweb coating wherein the treated support is characterized by a biofilm cell count of less than 50% that of an untreated porous support control. The process is useful for modifying porous materials, such as filter media and barrier fabrics to provide resistance to biofouling. The porous nanoweb coating is comprised of fibrous structures derived from gelation and drying of supramolecular assemblies of non-covalently bonded organogelators. Typical organogelators useful in the invention include those that assemble via hydrogen bonding and π-stacking.