Antimicrobially active compositions based on zinc compound, glycerine monoalkyl ether and antioxidant

US9446071B2 · kind B2 · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Petra Kolditz · Hamburg, DE
• Klaus Weber · Hamburg, DE
• Wolfgang Beilfuss · Hamburg, DE
• Carsten Bungenstock · Hamburg, DE
• Sabine HERWEG · Norderstedt, DE

Key dates

• Filing date: May 1, 2013
• Grant date: Sep 20, 2016
• Expiry date: Apr 5, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q17/005
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Antimicrobial compositions containing (i) at least one zinc compound selected from zinc salt and zinc oxide; (ii) at least one glycerine monoalkyl ether, R—O—CH2—CHOH—CH2O, wherein R is a branched or unbranched C1-C24 alkyl group that can be substituted with one or more hydroxy and/or C1-C4 alkoxy group(s) and/or the alkyl chain can be interrupted by up to four oxygen atoms; (iii) at least one antioxidant; and optionally (iv) one or more alkanediols; the weight ratio of (ii) to (iii) is at least 10:1. The compositions are used in cosmetics and pharmaceuticals and have broad anti-microbial activity, in particular against Pseudomonas aeruginosa, at active contents of only about 3 wt. %.