Encapsulated active materials
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.
1. 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.
2. 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.