Stable bubbles via particle absorption by electrostatic interaction
AssigneeL'oreal
InventorsVance Bergeron, Jean-Thierry Simonnet, Florence Levy, Aurelie Lafuma, Stephane Santucci
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Abstract
Disclosed are methods of preparing stable gas-in-solution emulsions by particle adsorption via electrostatic interaction, and stable emulsions prepared by particle adsorption via electrostatic interaction. Compositions and products comprising the emulsions are also disclosed. Emulsions may be stable over an extended period of time at room temperature.
Claims21
A method for preparing an emulsion, said method comprising mixing a gas-in-solution dispersion and a solution comprising particles, wherein:
- a. the gas-in-solution dispersion comprises at least one surface active agent in the continuous phase, and a disperse phase comprising gas bubbles;
- and
- b. the particle solution comprises particles having an opposite charge than that of the surface active agent.
A method for preparing an emulsion, said method comprising the steps of:
- a. preparing a solution having at least one cationic surface active agent;
- b. dispersing gas bubbles in the solution to obtain a gas-in-solution dispersion comprising gas bubbles having a cationic charge;
- c. preparing a solution comprising particles having an anionic charge;
- and
- d. mixing the gas-in-solution dispersion comprising gas bubbles having a cationic charge and the solution comprising particles having an anionic charge.
A method for preparing an emulsion, said method comprising the steps of:
- a. preparing a solution having at least one anionic surface active agent;
- b. dispersing gas bubbles in the solution to obtain a gas-in-solution dispersion comprising gas bubbles having an anionic charge;
- c. preparing a solution comprising particles having a cationic charge;
- and
- d. mixing the gas-in-solution dispersion comprising gas bubbles having an anionic charge and the solution comprising particles having a cationic charge.
A gas-in-solution emulsion comprising gas bubbles comprising a cationic charge at the gas/solution interface, wherein said gas bubbles are encapsulated by anionic particles.
A gas-in-solution emulsion comprising gas bubbles comprising an anionic charge at the gas/solution interface, wherein said gas bubbles are encapsulated by cationic particles.
Dependencies are inferred from the claim text.