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US 8,299,011 B2Granted
Encapsulated active materials
AssigneeInternational Flavors & Fragrances Inc.
InventorsYabin Lei, Lewis Michael Popplewell, Carol A. Joyce, Xihua Lu, Jeffrey James McElwee
Life of this patent
Estimating the term…
Abstract
The invention relates to products for washing and cleaning and/or care and protection of animate or inanimate surfaces that comprise micro-encapsulated benefit agents. The invention also relates to polyurethane and polyurea microcapsules.
Claims2
A process for the preparation of an encapsulated fragrance comprising the steps of:
- Preparing a fragrance emulsion wherein a fragrance and polyisocyanate is combined to form an oil phase;
- preparing a surfactant solution;
- emulsifying the oil phase into the aqueous phase to form a fragrance emulsion;
- adding hexemethylene diamine to the fragrance emulsion to form a capsule slurry;
- and
- curing the capsule slurry at a temperature greater than about 85° C.
3 more elements
A process for the preparation of an encapsulated fragrance comprising the steps of:
- preparing a fragrance emulsion wherein a fragrance and polyisocyanate is combined to form an oil phase;
- preparing a surfactant solution;
- emulsifying the oil phase into the aqueous phase to form a fragrance emulsion;
- adding hexemethylene diamine to the fragrance emulsion to form a capsule slurry;
- and
- curing the capsule slurry at a temperature greater than about 95° C.
3 more elements
Dependencies are inferred from the claim text.