Stable water-in-oil-in-water multiple emulsion system produced by hydrodynamic dual stabilization and a method for preparation thereof
OwnerJin Kim, Sung Lee +4inventors
InventorsJin Kim, Sung Lee, Byung Chae, Han Kim, Hak Kang, Ih Chang
Life of this patent
Estimating the term…
Abstract
The present invention relates to a water-in-oil-in-water multiple emulsion system and a method for preparation thereof, characterized by hydrodynamically stabilizing the multiple emulsion system by using hydrodynamic dual stabilization (HDS) technology. The HDS technology hydrophobizes water molecules in the internal aqueous phase by using a hydrogen bonding inhibitor and by improving the aggregating force between water molecules in the internal aqueous phase by using a water molecule aggregating agent.
Claims20
A hydrodynamically stabilized water-in-oil-in-water multiple emulsion, comprising:
- a water-in-oil emulsion composition formed from an active material combined with water, an oil, and hydrophobized with a hydrogen bonding inhibitor, a water molecule aggregating agent, and a hydrophobic surfactant.
A hydrodynamically stabilized water-in-oil-in-water multiple emulsion, consisting essentially of:
- a water-in-oil emulsion composition formed from an active material combined with water, an oil, and a hydrogen bonding inhibitor, a water molecule aggregating agent, and a hydrophobic surfactant wherein the hydrogen bonding inhibitor is in an amount between approximately 0.01% and approximately 5% by weight relative to the total weight of the water-in-oil-in-water multiple emulsion;
- the water molecule aggregating agent is in an amount between approximately 0.01% and approximately 5% by weight relative to the total weight of the water-in-oil-in-water multiple emulsion;
- and
- the hydrophobic surfactant is in an amount between approximately 0.01% and approximately 10% by weight relative to the total weight of the water-in-oil-in-water multiple emulsion;
- and
- whereby the water-in-oil multiple emulsion is reemulsified using a low mechanical shearing force in an aqueous phase by dissolving a hydrophilic surfactant to obtain the a water-in-oil-in-water multiple emulsion;
- and
- wherein the hydrophilic surfactant is in an amount between approximately 0.01% and approximately 10% by weight relative to the total weight of the water-in-oil-in-water multiple emulsion.
A method for preparing a multiple emulsion, comprising the steps of:
- a) selecting a composition of an active material combined with water and an oil;
- b) hydrophobizing the composition by mixing a hydrogen bonding inhibitor and a water molecule aggregating agent;
- c) obtaining a stable water-in-oil emulsion by using mechanical shearing force after evenly mixing the hydrophobic water phase and a hydrophobic surfactant;
- d) re-emulsifying the water-in-oil emulsion by adding a hydrophilic surfactant;
- and
- e) stabilizing the multiple emulsion by increasing the viscosity of the external aqueous phase with a dispersion stabilizing agent.
Dependencies are inferred from the claim text.