Delivery particle

• US 9,186,642 B2
• Filed: 05/11/2010
• Issued: 11/17/2015
• Est. Priority Date: 04/28/2010
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Dihora, Jiten Odhavji, Smets, Johan, Schwantes, Todd Arlin
• Primary Examiner(s): Park, H. Sarah
• Application Number:
  US12/777,301
• Publication Number:
  US 20110268802A1
• Time in Patent Office: 2,016 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61K 2800/10 General cosmetic use
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/56 Compounds, absorbed onto or entrapped into a solid carrier, e.g. encapsulated perfumes, inclusion compounds, sustained release forms
• CPC Class Codes: A61K 2800/654 The particulate/core comprising macromolecular material
• CPC Class Codes: A61K 8/11 Encapsulated compositions
• CPC Class Codes: A61K 8/8147 Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
• CPC Class Codes: A61Q 13/00 Formulations or additives for perfume preparations essential oils or perfumes per se C11B9/00
• CPC Class Codes: A61Q 15/00 Anti-perspirants or body deodorants deodorisation of air A61L9/00
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners
• CPC Class Codes: B01J 13/185 in an organic phase
• CPC Class Codes: C09B 67/0097 Dye preparations of special physical nature; Tablets, films, extrusion, microcapsules, sheets, pads, bags with dyes
• CPC Class Codes: C11D 17/0039 Coated compositions or coated components in the compositions, (micro)capsules
• CPC Class Codes: C11D 3/3757 (Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
• CPC Class Codes: C11D 3/505 encapsulated or adsorbed on a carrier, e.g. zeolite or clay
• CPC Class Codes: D06M 23/12 Processes in which the treating agent is incorporated in microcapsules making microcapsules B01J13/02

Abstract

The present application relates to encapsulated benefit agents, compositions comprising such encapsulated benefit agents and processes for making and using compositions comprising such encapsulated benefit agents. Such encapsulated benefit agents eliminate or minimize one or more of the drawbacks of current encapsulated benefit agents and thus provide formulators with additional perfume delivery opportunities.

Claims

1. A composition comprising an adjunct ingredient and, based on total composition weight, from about 0.1% to about 50%, particles, each of said particles independently having a particle size of from about 2 microns to about 80 microns, and each particle comprising:

a) a core that comprises, based on total particle weight, from about 6% to about 99.9% of a benefit agent and from about 0.1% to about 94% of a partitioning modifier comprising an oil soluble material that has a ClogP greater than about 4; and

b) a shell that encapsulates said core, said shell comprising, based on total shell weight, from about 50% to about 100% of a polyacrylate;

said composition being a consumer product;

wherein said benefit agent and said partitioning modifier are different materials;

wherein said partitioning modifier is selected from the group consisting of isopropryl myristate; and

wherein said polyacrylate comprises a polyacrylate random copolymer, said polyacrylate random copolymer comprising, based on total polyacrylate weight;

a) from about 0.2% to about 2.0% amine content;

b) from about 0.6% to about 6.0% carboxylic acid;

or c) from about 0.1% to about 1.0% amine content and from about 0.3% to about 3.0% carboxylic acid.

2. The composition of claim 1, wherein said benefit agent comprises a material selected from the group consisting of perfumes;

brighteners;

insect repellants;

silicones;

waxes;

flavors;

vitamins;

fabric softening agents;

skin care agents;

enzymes;

probiotics;

dye polymer conjugate;

dye clay conjugate;

perfume delivery system;

sensates;

attractants;

anti-bacterial agents;

dyes;

pigments;

bleaches; and

mixtures thereof.

3. A composition according to claim 2, wherein said perfume comprises from about 2% to about 80% of a perfume raw material with a ClogP less than 3.5.

8. The composition of claim 1, wherein said particles have a cationic charge at a pH range from about 2 to about 10.

9. A composition according to claim 1, wherein at least 75% of said particles have a fracture strength of from about 0.2 MPa to about 30 MPa.

4. A process of making a consumer product, said process comprising combining an adjunct ingredient and, based on total composition weight, from about 0.1% to about 50% particles, each of said particles independently having a particle size of from about 2 microns to about 80 microns, each particle comprising:

a) a core that comprises, based on total particle weight, from about 6% to about 95%, of a benefit agent and from about 5% to about 94%, of a partitioning modifier comprising an oil soluble material that has a ClogP greater than about 4; and

b) a shell that encapsulates said core, said shell comprising, based on total shell weight, from about 50% to about 100% of a polyacrylate;

wherein said benefit agent and said partitioning modifier are different materials;

wherein said partitioning modifier is selected from the group consisting of isopropryl myristate; and

wherein said polyacrylate comprises a polyacrylate random copolymer, said polyacrylate random copolymer comprising, based on total polyacrylate weight;

a) from about 0.2% to about 2.0% amine content;

b) from about 0.6% to about 6.0% carboxylic acid;

or c) from about 0.1% to about 1.0% amine content and from about 0.3% to about 3.0% carboxylic acid.

5. A process of making a composition according to claim 4 wherein said particles are contained in a slurry that is combined with said adjunct ingredient.

6. A process of making a composition according to claim 4 wherein said particles are contained in an agglomerate that is combined with said adjunct ingredient.

7. A process of making a composition according to claim 6 wherein said agglomerate comprises materials selected from the group consisting of silicas, citric acid, sodium carbonate, sodium sulfate, sodium chloride, and binders such as sodium silicates, modified celluloses, polyethylene glycols, polyacrylates, polyacrylic acids, zeolites, and mixtures thereof.

10. The process of claim 4, wherein the benefit agent comprises a perfume raw material with a ClogP from about 0.5 to about 3.

11. A composition comprising an adjunct ingredient and, based on total composition weight, from about 0.1% to about 50%, particles, each of said particles independently having a particle size of from about 2 microns to about 80 microns, and each particle comprising:

a) a core that comprises, based on total particle weight, from about 6% to about 99.9% of a benefit agent with a ClogP from about 0.5 to about 3 and from about 0.1% to about 94% of a partitioning modifier selected from the group consisting of isopropyl myristate; and

b) a shell that encapsulates said core, said shell comprising, based on total shell weight, from about 50% to about 100% a polyacrylate comprising a polyacrylate random copolymer comprising, based on total polyacrylate weight;

i.) from about 0.2% to about 2.0% amine content;

ii.) from about 0.6% to about 6.0% carboxylic acid;

or

iii.) from about 0.1% to about 1.0% amine content and from about 0.3% to about 3.0% carboxylic acid;

wherein said composition is a consumer product.