Microcapsules

US8119587B2 · kind B2 · utility

Assignee

• Givaudan SA · CH

Inventors

• Laurent Cavin · Féchy, CH
• Cedric Geffroy · Langon, FR
• Ian Harrison · Poissy, FR
• Jutta Hotz · Zürich, CH
• Marion Mathys · Stintenberger Straße, CH
• Christian Quellet · Bienne, CH

Key dates

• Filing date: Feb 6, 2008
• Grant date: Feb 21, 2012
• Expiry date: Oct 21, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q19/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Microcapsules comprising a core of fragrance and a shell of aminoplast polymer, the composition of the shell being from 75-100% of a thermoset resin comprising 50-90%, preferably from 60-85%, of a terpolymer and from 10-50%, preferably from 10-25%, of a polymeric stabilizer; the terpolymer comprising: (a) from 20-60%, preferably 30-50% of moieties derived from at least one polyamine, (b) from 3-50%, preferably 5-25% of moieties derived from at least one aromatic polyol; and (c) from 20-70%, preferably 40-60% of alkylene or alkylenoxy moieties having 1 to 6 methylene units, preferably 1 to 4 methylene units and most preferably 1 methylene unit; the microcapsules additionally optionally comprising up to 25%, preferably up to 10% of a cationic polymer. The microcapsules are useful for the storage and dissemination of fragrance in various products, such as laundry products and fabric care products.