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US 2025/0033015 A1Published application
Polydisulfide core-shell microcapsules
AssigneeFirmenich SA
InventorsAng LI, Huda JERRI, Christopher HANSEN
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Abstract
Disclosed herein is a process for the preparation of polydisulfide core-shell microcapsules. The polydisulfide core-shell microcapsules include an oil-based core including a hydrophobic material and a polymeric shell including polydisulfide bonds. Polydisulfide core-shell microcapsules are also disclosed herein. A perfuming composition and a consumer product including polydisulfide core-shell microcapsules are also disclosed herein.
Claims20
A process for the preparation of a polydisulfide core-shell microcapsule slurry, comprising the steps of:
- a) dissolving at least one polythiol monomer in a hydrophobic material to form an oil phase;
- and
- b) dispersing the oil phase obtained in step a) into an aqueous phase to form an oil-in-water emulsion;
- and
- c) applying sufficient conditions to induce thiol oxidation at the oil-water interface to form a polydisulfide core-shell microcapsule slurry,
- wherein an oxidation catalyst is added in the oil phase in step a), and/or an oxidation catalyst is added in the oil-in-water emulsion obtained after step b),
- wherein a stabilizer is added in the oil phase in step a) and/or in the aqueous phase in step b), and
- wherein an oxidant is added in the aqueous phase in step b) and/or in the oil-in-water emulsion obtained after step b).
5 more elements
Dependencies are inferred from the claim text.