Dentifrice compositions comprising a stable low water, phase comprising polyphosphate and ionic active ingredients

US6696045B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Jiang Yue · Columbus, US
• Long Zhu · Nanjing, CN
• Li-Han Chen · Tainan, TW
• Ying Cheng · Tainan, TW
• Tao Xu · Suzhou, CN
• Andrew Damian Weller · Mason, US
• Ying-Ying Wang · Baoshan, TW

Key dates

• Filing date: Nov 22, 2002
• Grant date: Feb 24, 2004
• Expiry date: Nov 22, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K8/90
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Disclosed are dentifrice compositions comprising in a single phase: (a) from about 0.1% to about 30% of one or more linear polyphosphates having an average chain length of about 4 or more; (b) an ionic active ingredient selected from the group consisting of a fluoride ion source, a stannous ion source, a zinc ion source, a copper ion source and mixtures thereof, wherein the ionic active ingredient is present as a solid dispersion in the composition and delivers and effective amount of ionic active when solubilized; (c) a binder system comprised of (i) from about 0.05% to about 3% of a thickening agent selected from the group consisting of polysaccharides, carbomers, poloxamers, modified celluloses, and mixtures thereof; and (ii) from about 0.1% to about 70% of at least one humectant; wherein the dentifrice composition has a total water content of less than about 10%. Further disclosed are methods for stabilizing dentifrice compositions by providing such a binder system.