High oil clear emulsion with diene elastomer

US6387357B1 · kind B1 · utility

Assignee

• Colgate-Palmolive Company · US

Inventors

• Suman Chopra · Sparta, US
• Jairajh Mattai · Piscataway, US
• Lin Fei · Kendall Park, US
• Eric Guenin · Ewing Township, US
• Xiaozhong Tang · Bound Brook, US
• Claudio Ortiz

Key dates

• Filing date: Oct 20, 2000
• Grant date: May 14, 2002
• Expiry date: Oct 20, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/262
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A clear antiperspirant and/or deodorant composition is disclosed in the form of an emulsion having a refractive index less than 1.42 and comprising: (a) 25-70% of an external phase comprising: (i) 0.1-10%, on an actives basis, of at least one elastomer which is a cyclomethicone (and) dimethicone crosspolymer made with an ≡Si—H containing polysiloxane and an alpha, omega-diene of formula CH2═CH(CH2)xCH═CH2, where x=1-20, to form a gel by crosslinking and addition of ≡Si—H across double bonds in the alpha, omega diene, which crosspolymer has a viscosity in the range of 50,000-3,000,000 centipoise; (ii) 0.1-5% of a silicone copolyol having an HLB value ≦8; (iii) 0.1-68% of a volatile silicone selected in an amount to complete the external phase; (iv) 0-10% of a cosurfactant or emulsifier having an HLB value in the range of 1-15; (v) 0-5% of a non-volatile silicone; and (b) 30-75% of an internal phase which is made with: (i) 7-25% (on an anhydrous actives basis (excluding the waters of hydration) of an antiperspirant active; (ii) 0-10% ethanol; (iii) additional water as required to adjust the refractive index; (iv) 0-5% of an antimicrobial agent; an…