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US 2010/0247660 A1Published application
Microcapsules Containing Active Ingredients
AssigneeInternational Flavors & Fragrances Inc.
InventorsYabin Lei, Lewis Michael Popplewell, Xiao Huang
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Abstract
The present invention relates to a microcapsule particle composition that is composed of a sol-gel material. The microcapsule particle composition is well suited for personal care and cleaning products.
Claims41
A process for preparing a microcapsule particles containing an active material in the core comprising the steps of
- a. Preparing a mixture of an appropriate amount of sol-gel precursor and an active material;
- b. Cooling the mixture obtained in step a;
- c. Preparing a surfactant solution by dissolving a surfactant in water;
- d. Cooling the surfactant solution obtained in step c;
- e. Adding the sol-gel precursor and fragrance oil mixture obtained in step a to the surfactant solution obtained in step c;
- f. Homogenizing the mixture of sol-gel precursor, fragrance oil and surfactant solution obtained in step e;
- g. Adding a defoamer to the homogenized mixture obtained in step f;
- h. Curing the mixture to form the microcapsule particles;
- and
- i. Modifying the microcapsule particles with a second sphere complexation to form a coated microcapsule particle.
7 more elements
A process for preparing a microcapsule particle composition comprising the steps of
- a. Adding a fragrance oil to an aqueous surfactant solution to form a mixture;
- b. Homogenizing the mixture obtained in step a to form a fragrance emulsion;
- c. Adding a sol-gel precursor dropwise to the fragrance emulsion under continuous mixing;
- d. Curing the mixture at room temperature to form the microcapsule particle composition,
- e. Modifying the microcapsule particles with a second sphere complexation to form a coated microcapsule particle composition.
2 more elements
A process for preparing a microcapsule particle composition comprising the steps of:
- a. Adding a fragrance oil to an aqueous surfactant to form a mixture;
- b. Homogenizing the mixture obtained in step a to form a fragrance emulsion;
- c. Adding an appropriate amount of water to the fragrance emulsion obtained in step b to achieve the desired concentration;
- d. Adding a sol-gel precursor to the diluted fragrance emulsion obtained in step c dropwise under constant mixing;
- e. Curing the mixture at room temperature until the microcapsule particle composition is formed;
- and
- f. Modifying the microcapsule particles with a second sphere complexation to form a coated microcapsule particle composition.
4 more elements
A process for preparing a microcapsule particle composition comprising the steps of:
- a. Preparing a fragrance emulsion comprising the steps of emulsifying a fragrance oil into surfactant solution;
- b. Preparing a sol-gel precursor emulsion by emulsifying a sol-gel precursor and an aqueous surfactant solution;
- c. Adding the sol-gel precursor emulsion formed in step b to the fragrance emulsion obtained in step a under constant mixing
- d. Curing the mixture obtained in step c at room temperature until the microcapsule particle composition has formed;
- and
- e. Modifying the microcapsule particles with a second sphere complexation to form a coated microcapsule particle composition.
3 more elements
Dependencies are inferred from the claim text.