Quaternary ammonium group-containing polymers having antimicrobial activity

US4532128A · kind A · utility

Assignee

• Dynapol · US

Inventors

• Bernard G. Sheldon · Palo Alto, US
• Robert E. Wingard, Jr. · Palo Alto, US
• Ned M. Weinshenker · Palo Alto, US
• Daniel J. Dawson · Mountain View, US

Key dates

• Filing date: Sep 17, 1984
• Grant date: Jul 30, 1985
• Expiry date: Sep 17, 2004

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K31/785
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Polymeric quaternary ammonium compounds having recurring vinylbenzyl ammonium units are disclosed. The quaternary ammonium units preferably have 2 alkyl substituents of 1 to 4 carbons and 1 alkyl substituent of 4 to 12 carbons. These materials have antimicrobial properties and are particularly useful for preserving ophthalmic solutions.