Delivery particle

Patent metadata

Field	Value
Publication number	US-11096875-B2
Application number	US-201916246568-A
Country	US
Kind code	B2
Filing date	Jan 14, 2019
Priority date	Apr 28, 2010
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

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.

First claim

What is claimed is:

1. A composition comprising an adjunct ingredient and, based on total composition weight, from about 0.1% to about 50%, of particles, wherein the particles have a median particle size of from about 5 microns to about 56 microns, 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,
said partitioning modifier comprising a material selected from the group consisting of isopropyl myristate; castor oil; mineral oil; triethyl citrate; paraffin oil; capryllic triglyceride; soybean oil; and mixtures thereof; and

b) a shell that encapsulates said core, said shell comprising, based on total shell weight, from about 80% to about 100% of a polyacrylate,
wherein said polyacrylate comprises a polyacrylate random copolymer, said polyacrylate random copolymer comprising, based on total polyacrylate weight:
i) from about 0.2% to about 2.0% amine content; or
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; and

wherein said benefit agent and said partitioning modifier are different materials; and
wherein said benefit agent comprises a material selected from the group consisting of perfumes; brighteners; dye polymer conjugate; dye clay conjugate; perfume delivery system; dyes; pigments; bleaches; and mixtures thereof.

2. The composition of claim 1 , wherein said benefit agent comprises perfumes.

3. The composition of claim 1 , wherein said adjunct ingredient comprises member selected from the group consisting of a humectant, a suspending agent, a dye, a pigment, and mixtures thereof.

4. The composition of claim 1 , wherein said composition further comprises a member selected from the group consisting of a pH adjusting agent, a antimicrobial agent, an antifoam agent, a surfactant, a clay, a rheology modifier, a deposition aid, and mixtures thereof.

5. The composition of claim 1 , wherein the particles have a median particle size of from about 7 microns to about 30 microns.

6. The composition of claim 1 , wherein the particles have a median particle size of from about 10 microns to about 27 microns.

7. The composition of claim 1 , wherein said partitioning modifier comprises isopropyl myristate.

8. The composition of claim 1 , wherein said partitioning modifier comprises a material selected from castor oil; mineral oil; triethyl citrate;
paraffin oil; and mixtures thereof.

9. A composition comprising an adjunct ingredient and, based on total composition weight, from about 0.1% to about 50%, of particles, wherein the particles have a median particle size of from about 5 microns to about 56 microns, 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 80% to about 100% of a polyacrylate,
wherein said polyacrylate comprises a polyacrylate random copolymer, said 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 benefit agent and said partitioning modifier are different materials;
wherein said benefit agent comprises a material selected from the group consisting of perfumes; brighteners; dye polymer conjugate; dye clay conjugate; perfume delivery system; dyes; pigments; bleaches; and mixtures thereof; and
wherein said composition is in the form of a pourable liquid.

10. The composition of claim 9 , wherein said benefit agent comprises perfumes.

11. The composition of claim 9 , wherein said adjunct ingredient comprises member selected from the group consisting of a humectant, a suspending agent, a dye, a pigment, and mixtures thereof.

12. The composition of claim 9 , wherein said composition further comprises a member selected from the group consisting of a pH adjusting agent, a antimicrobial agent, an antifoam agent, a surfactant, a clay, a rheology modifier, a deposition aid, and mixtures thereof.

13. The composition of claim 9 , wherein the particles have a median particle size of from about 7 microns to about 30 microns.

14. The composition of claim 9 , wherein the particles have a median particle size of from about 10 microns to about 27 microns.

15. The composition of claim 9 , wherein said partitioning modifier comprises isopropyl myristate.

16. The composition of claim 9 , wherein said partitioning modifier comprises a material selected from isopropyl myristate; castor oil; mineral oil;
triethyl citrate; paraffin oil; and mixtures thereof.

17. The composition of claim 9 , wherein said composition further comprises from about 20% to about 95%, by weight of said composition, of an aqueous carrier.

Assignees

• Procter & Gamble

Inventors

• Dihora Jiten Odhavji
• Smets Johan
• Schwantes Todd Arlin

Classifications

• A61K8/8147

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers · CPC title

• A61K2800/10

  General cosmetic use · CPC title

• A61K8/11 Primary

  Encapsulated compositions · CPC title

• C11D3/505

  encapsulated or adsorbed on a carrier, e.g. zeolite or clay · CPC title

• D06M23/12

  Processes in which the treating agent is incorporated in microcapsules (making microcapsules B01J13/02) · CPC title