Personal care compositions comprising responsive particles

US8865144B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Ioannis Constantine Constantinides · Wyoming, US
• Robert John Willicut · Monroe, US
• Ellen Schmidt Baker · Cincinnati, US
• Howard David Hutton, III · Cincinnati, US
• Timothy James Felts · Hamilton, US
• Lee Arnold Schechtman · Lancaster, US
• Sergiy Minko · Potsdam, US
• Mikhail Motornov · Clark, US

Key dates

• Filing date: Feb 14, 2007
• Grant date: Oct 21, 2014
• Expiry date: Aug 20, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/412
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Personal care compositions comprising responsive particles. In one aspect, the responsive particle comprises: (1) a particle core having an interfacial surface, (2) a first polymer having a first property, and (3) a second polymer having a contrasting property. The first polymer and the second polymer are attached at different locations to the interfacial surface of the particle core. In another aspect, the responsive particle comprises: (1) a particle core having an interfacial surface, (2) at least one block co-polymer comprising a first block and a second block, wherein said first block has a first property and said second block has a second property, and (3) optionally, at least one other polymer having a third property. The block co-polymer and the optional other polymer (if present) are attached to the interfacial surface of the particle core, and at least one of the properties contrasts. The personal care compositions also comprise a dermatologically acceptable carrier. Also disclosed are methods of making responsive particles.