Multi-stage benefit agent delivery system

Patent metadata

Field	Value
Publication number	US-10047324-B2
Application number	US-201615292686-A
Country	US
Kind code	B2
Filing date	Oct 13, 2016
Priority date	Oct 13, 2015
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

The present invention provides a beneficial composition comprising (a) an encapsulated benefit agent composition comprising: a core comprising at least one benefit agent, and a water-insoluble shell; and (b) a suspension medium comprising: at least one suspending polymer, and at least one clay. The present invention also provides methods of using such a beneficial composition. In addition, the present invention provides methods of making a beneficial composition comprising: (a) providing an encapsulated benefit agent composition comprising a core comprising at least one benefit agent and a water-insoluble shell; (b) providing a suspension medium comprising at least one suspending polymer and at least one clay; (c) adding the encapsulated benefit agent composition to the suspension medium; and (d) mixing the suspension medium and the encapsulated benefit agent composition to form a substantially uniform aqueous suspension.

First claim

What is claimed is:

1. A beneficial composition, comprising:
(a) an encapsulated benefit agent composition comprising:
a core comprising at least one benefit agent; and
a water-insoluble shell; and

(b) a suspension medium comprising:
at least one suspending polymer;
at least one clay; and
water;

further having a viscosity from about 100 cPs to about 2000 cPs.

2. The beneficial composition according to claim 1 , wherein the at least one benefit agent is a fragrance.

3. The beneficial composition according to claim 1 , wherein the suspension medium further comprises a colorant, a salt, a neutralizing agent, a free fragrance, an emulsifier, or any combination thereof.

4. The beneficial composition according to claim 1 ,
wherein the encapsulated benefit agent composition is present in an amount from about 0.1 wt % to about 10 wt %;
wherein the at least one suspending polymer is present in an amount from about 0.01 wt % to about 2 wt %; and
wherein the at least one clay is present in an amount from about 0.01 wt % to about 2 wt %.

5. The beneficial composition according to claim 1 , wherein the encapsulated benefit agent composition is a microcapsule, a nanocapsule, or any combination thereof.

6. The beneficial composition according to claim 5 , wherein the encapsulated benefit agent composition is a microcapsule.

7. The beneficial composition according to claim 1 , wherein the suspending polymer is selected from the group consisting of a water-soluble polymer, a water-insoluble polymer, and any combination thereof.

8. The beneficial composition according to claim 7 , wherein the suspending polymer is selected from the group consisting of a hydrophobically-modified alkali swellable emulsion polymer (HASE), an alkali swellable emulsion polymer (ASE), a cationic polymer, an anionic polysaccharide polymer, and any combination thereof.

9. The beneficial composition according to claim 8 , wherein the alkali swellable emulsion polymer (ASE) is selected from the group consisting of a cross-linked acrylic polymer dispersion, a cross-linked polyacrylate powder, an alkali-swellable anionic acrylic polymer emulsion, a cross-linked acrylic acid homopolymer, and any combination thereof.

10. The beneficial composition according to claim 1 , wherein the clay is smectite clay.

11. A cleaning agent composition, comprising a detergent and the beneficial composition according to claim 1 .

12. A cleaning agent composition, comprising a fabric softener and the beneficial composition according to claim 1 .

13. A method of making a beneficial composition, comprising:
(a) providing an encapsulated benefit agent composition comprising a core comprising at least one benefit agent and a water-insoluble shell;
(b) providing a suspension medium comprising at least one suspending polymer, at least one clay, and water;
(c) adding the encapsulated benefit agent composition to the suspension medium;
(d) optionally adding a free benefit agent into the suspension medium; and
(e) mixing the suspension medium and the encapsulated benefit agent composition to form a substantially uniform aqueous suspension.

14. A method of making a beneficial composition, comprising:
(a) providing a mixture comprising
(i) an encapsulated benefit agent composition comprising a core comprising at least one benefit agent and a water-insoluble shell;
(ii) at least one suspending polymer;
(iii) at least one clay; and
(iv) optionally a benefit agent; and

(b) mixing the mixture and water to form a substantially uniform aqueous suspension.

15. The method of making a beneficial composition according to claim 14 , wherein the at least one benefit agent is a fragrance.

16. The method of making a beneficial composition according to claim 14 ,
wherein the encapsulated benefit agent composition is present in an amount from about 0.1 wt % to about 10 wt %;
wherein the at least one suspending polymer is present in an amount from about 0.01 wt % to about 2 wt %; and
wherein the at least one clay is present in an amount from about 0.01 wt % to about 2 wt %.

17. The method of making a beneficial composition according to claim 14 , wherein the encapsulated benefit agent composition is a microcapsule, a nanocapsule, or any combination thereof.

18. The method of making a beneficial composition according to claim 14 , wherein the suspending polymer is selected from the group consisting of a water-soluble polymer, a water-insoluble polymer, and any combination thereof.

19. The method of making a beneficial composition according to claim 18 , wherein the suspending polymer is selected from the group consisting of a hydrophobically-modified alkali swellable emulsion polymer (HASE), an alkali swellable emulsion polymer (ASE), a cationic polymer, an anionic polysaccharide polymer, and any combination thereof.

20. The method of making a beneficial composition according to claim 14 , wherein the clay is smectite clay.

Assignees

• Henkel IP & Holding GmbH

Inventors

• Patel Madhusudan
• Higgins Kristen
• Cameron Ryan Bradley
• Coope-Epstein Janet
• Pelletier Maxime
• Moser Cynthia L

Classifications

• C11D3/1253

  Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite · CPC title

• C11D3/505 Primary

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

• C11D7/20

  Water-insoluble oxides · CPC title

• C11D3/1273

  Crystalline layered silicates of type NaMeSixO2x+1YH2O · CPC title

• C11D17/0039

  Coated compositions or coated components in the compositions, (micro)capsules · CPC title