Aqueous carrier systems for water-insoluble materials

US6221389A · kind A · utility

Assignee

• L'Oreal · FR

Inventors

• David W. Cannell · New Hope, US
• Hiten Mathur · Woodbridge, US
• Nghi Van Nguyen · Edison, US
• Cynthia Chong Espino · Princeton, US
• Mick Swanborough · Avenel, US
• Mohamed Kanji · Edison, US
• Carl Orr · Scotch Plains, US
• Lila Patel · Edison, US

Key dates

• Filing date: Jan 11, 2000
• Grant date: Apr 24, 2001
• Expiry date: Jan 11, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/12
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A composition containing at least one organic phospholipid capable of forming bilayers in aqueous solution;at least one amphoteric surfactant; and at least one nonionic surfactant present in an amount by weight equal to or greater than the amount of the phospholipid. The invention also relates to a delivery system for water-insoluble ingredients containing the above components, at least one water-insoluble ingredient, and an aqueous phase, wherein the organic phospholipid, amphoteric surfactant, and nonionic surfactant are present in a combined amount sufficient to allow the water-insoluble ingredient to be incorporated into the system. A method of treating keratinous susbstances is also disclosed.