Multi-stage benefit agent delivery system
View Patent ↗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.
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.