Symrise Ag

Daniela Gregor

Ralf Bertram

Benjamin Rost

Sabine Lange

Patrick Ott

Kolja Behrens

Julian Alexander Georgi

Jan Peter Ebbecke

Wiebke Begemann

Lara-Joy Kleine-benne

Christina Koepke

Stefanie Bargsten

Andreas Vogel

Britta Raabe

Bertram Ralf

What are proposed are microcapsules comprising

Microcapsules

The invention relates to a method for producing scent capsules with improved surfactant stability, comprising the following steps: (a) providing a scent composition containing at least one scent which has at least one functional group that can form an acid group by means of oxidation or hydrolysis, and (b) encapsulating the scent mixture, characterised in that a scent composition is used that has an acid value of no more than 5 mg KOH/g immediately before encapsulation.

Method for the production of scent capsules with improved surfactant stability

The invention relates to a method for producing microcapsules, comprising the following steps: (a) providing a first aqueous preparation containing at least one prepolymer; (b) providing a second non-aqueous preparation containing the active substance to be encapsulated; (c) mixing the aqueous and the non-aqueous phases in the presence of at least one emulsifier and/or stabilizer in order to form an emulsion; (d) polymerizing the at least one prepolymer contained in the emulsion from step (c) in order to obtain a dispersion of microcapsules that enclose the active substance; (e) hardening and cross-linking the microcapsules obtained in step (d); and optionally (f) removing the microcapsules from the dispersion and drying the microcapsules, the method being characterized in that the emulsion is formed in the presence of at least one 1,2-diol in step (c).

Method for producing microcapsules

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Holzminden, Germany

Daniela Gregor