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US 7,119,057 B2Granted
Encapsulated fragrance chemicals
AssigneeInternational Flavors & Fragrances Inc.
InventorsLewis Michael Popplewell, Kaiping Daniel Lee, Johan Gerwin Lodewijk Pluyter, Joseph Brain, Yueqian Zhen
Life of this patent
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Abstract
A polymeric encapsulated fragrance is disclosed which is suitable for use in personal care and cleaning products. In a preferred embodiment of the invention the fragrance is encapsulated by a first polymer material to form a fragrance encapsulated polymer, the polymer encapsulated shell is then coated with a cationic polymer, preferably a cationic starch and guar.
Claims24
A wash-off product comprising:
- a fragrance material;
- said fragrance material encapsulated by a polymer selected from the group consisting of vinyl polymer;
- an acrylate polymer, melamine-formaldehyde;
- urea formaldehyde and mixtures thereof to provide a polymer encapsulated fragrance;
- the polymer encapsulated fragrance is further coated by a cationic polymer selected from the group consisting of polysaccharides, cationically modified starch, cationically modified guar, polysiloxanes, poly diallyl dimethyl ammonium halides, copolymers of poly diallyl dimethyl ammonium chloride and vinyl pyrrolidone, acrylamides, imidazoles, imidazolinium halides, imidazolium halides, poly vinyl amine, copolymers of poly vinyl amine and N-vinyl formamide and mixtures thereof;
- a silicone material and wherein the fragrance is a liquid thereby providing a liquid core to the polymer encapsulated fragrance.
3 more elements
A wash-off product comprising:
- a liquid fragrance material;
- said fragrance material encapsulated by a polymer wherein the polymer is a mixture of a copolymer of poly acrylamide and acrylic acid and melamine-formaldehyde to form a polymer encapsulated fragrance thereby providing a liquid core to the polymer encapsulated fragrance;
- a cationic polymer selected from the group consisting of selected from the group consisting of polysaccharides, cationically modified starch, cationically modified guar, polysiloxanes, poly diallyl dimethyl ammonium halides, copolymers of poly diallyl dimethyl ammonium chloride and vinyl pyrrolidone, acrylamides, imidazoles, imidazolinium halides, imidazolium halides, poly vinyl amine, copolymers of poly vinyl amine and N-vinyl formamide to the surface of the polymer encapsulated fragrance to form a cationically coated polymer encapsulated material;
- and
- a silicone material.
2 more elements
Dependencies are inferred from the claim text.