Capsules and compositions comprising the same

Patent metadata

Field	Value
Publication number	US-9725684-B2
Application number	US-201113035445-A
Country	US
Kind code	B2
Filing date	Feb 25, 2011
Priority date	Feb 25, 2011
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A seamless capsule comprises at least one core and a shell layer. The capsule can further comprise an intermediate layer which surrounds the core(s) and is surrounded by the shell layer. The shell layer comprises a material selected from the group consisting of water-soluble polymers, water-dispersible polymer, hydrogels. The shell layer can further comprise a disintegration aid.

First claim

What is claimed is:

1. A capsule comprising:
(a) at least one lipophobic core; and
(b) a continuous shell layer surrounding the core, the shell layer comprising:
(i) a material selected from the group consisting of hydrogels, dehydrated hydrogels, water-soluble polymers, water-dispersible polymers, and combinations thereof; and
(ii) a disintegration aid disposed in the shell layer, the disintegration aid exhibiting an absorption of 5 grams or more of solution per gram of disintegration aid as measured in an aqueous solution having an electrical conductivity of about 5 μS/cm or less, and the disintegration aid being selected from the group consisting of superabsorbent polymers, xerogels, and mixtures thereof.

2. The capsule of claim 1 , wherein the water-soluble polymer and water-dispersable polymer are selected from the group consisting of acrylates, polyhydric alcohol, polysaccharides, polyvinyl acetate, polyvinyl pyrrolidone, carboxymethyl cellulose, hydroxyethyl cellulose, acrylamides, acrylates, polyethylene glycols, and mixtures thereof.

3. The capsule of claim 2 , wherein the water-soluble polymer is a polyvinyl alcohol.

4. The capsule of claim 1 , wherein the continuous shell layer further comprises a gelling agent.

5. The capsule of claim 4 , wherein the gelling agent is selected from the group consisting of polysaccharides, gelatin, sodium alginate, agar, carrageenans, and mixtures thereof.

6. A composition comprising at least one surfactant and at least one capsule of claim 1 .

7. A cleaning composition comprising at least one cleaning agent and at least one capsule of claim 1 .

8. A laundry care composition comprising:
(a) at least one laundry care ingredient; and
(b) at least one capsule, the capsule comprising:
(i) at least one lipophobic core; and
(ii) a continuous shell layer surrounding the core, the shell layer comprising:
(A) a material selected from the group consisting of hydrogels, dehydrated hydrogels, water-soluble polymers, water-dispersible polymers, and combinations thereof; and
(B) a disintegration aid disposed in the shell layer, the disintegration aid exhibiting an absorption of 5 grams or more of solution per gram of disintegration aid as measured in an aqueous solution having an electrical conductivity of about 5 μS/cm or less, and the disintegration aid being selected from the group consisting of superabsorbent polymers, xerogels, and mixtures thereof.

9. The laundry care composition of claim 8 , wherein the laundry care ingredient is selected from the group consisting of surfactants, builders, chelating agents, dye transfer inhibiting agents, dispersants, enzymes, enzyme stabilizers, catalytic materials, bleach activators, polymeric dispersing agents, clay soil removal/anti-redeposition agents, brighteners, suds suppressors, dyes, additional perfume and perfume delivery systems, structure elasticizing agents, fabric softeners, carriers, hydrotropes, processing aids, pigments, and mixtures thereof.

10. The laundry care composition of claim 8 , wherein the laundry care composition further comprises a liquid medium, the laundry care ingredient is dissolved or dispersed in the liquid medium, and the capsule is suspended in the liquid medium.

11. The laundry care composition of claim 8 , wherein the water-soluble polymer and water-dispersable polymer are selected from the group consisting of acrylates, polyhydric alcohol, polysaccharides, polyvinyl acetate, polyvinyl pyrrolidone, carboxymethyl cellulose, hydroxyethyl cellulose, acrylamides, acrylates, polyethylene glycols, and mixtures thereof.

12. The laundry care composition of claim 11 , wherein the water-soluble polymer is a polyvinyl alcohol.

13. The laundry care composition of claim 8 , wherein the continuous shell layer further comprises a gelling agent.

14. The laundry care composition of claim 13 , wherein the gelling agent is selected from the group consisting of polysaccharides, gelatin, sodium alginate, agar, carrageenans, and mixtures thereof.

15. A capsule comprising:
(a) at least one core, the core comprising a lipophobic material;
(b) a continuous, intermediate layer surrounding each core, the intermediate layer comprising a lipophilic material that is immiscible with or insoluble in aqueous media; and
(c) a continuous shell layer surrounding the intermediate layer, the shell layer comprising:
(i) a material selected from the group consisting of hydrogels, dehydrated hydrogels, water-soluble polymers, water-dispersible polymers, and combinations thereof; and
(ii) a disintegration aid disposed in the shell layer, the disintegration aid exhibiting an absorption of 5 grams or more of solution per gram of disintegration aid as measured in an aqueous solution having an electrical conductivity of about 5 μS/cm or less, and the disintegration aid being selected from the group consisting of superabsorbent polymers, xerogels, and mixtures thereof.

16. The capsule of claim 15 , wherein the intermediate layer comprises a lipophilic material selected from the group consisting of vegetable oils, vegetable fats, animal oils, animal fats, mineral oil, paraffinic oils, parrafinic waxes, silicone oils, and mixtures thereof.

17. The capsule of claim 15 , wherein the intermediate layer further comprises a hydrophobic, particulate material dispersed in the lipophilic material.

18. The capsule of claim 15 , wherein the water-soluble, polymer and water-dispersable, polymer are selected from the group consisting of acrylates, polyhydric alcohol, polysaccharides, polyvinyl acetate, polyvinyl pyrrolidone, carboxymethyl cellulose, hydroxyethyl cellulose, acrylamides, acrylates, polyethylene glycols, and mixtures thereof.

19. The capsule of claim 18 , wherein the water-soluble, polymer is a polyvinyl alcohol.

20. The capsule of claim 15 , wherein the continuous shell layer further comprises a gelling agent.

21. The capsule of claim 20 , wherein the gelling agent is selected from the group consisting of polysaccharides, gelatin, sodium alginate, agar, carrageenans, and mixtures thereof.

22. A composition comprising at least one surfactant and at least one capsule of claim 15 .

23. A cleaning composition comprising at least one cleaning agent and at least one capsule of claim 15 .

24. A laundry care composition comprising;
(a) at least one laundry care ingredient; and
(b) at least one capsule, the capsule comprising:
(a) at least one core, the core comprising a lipophobic material;
(i) a continuous, intermediate layer surrounding each core, the intermediate layer comprising a lipophilic material that is immiscible with or insoluble in aqueous media; and
(ii) a continuous shell layer surrounding the intermediate layer, the shell layer comprising:
(A) a material selected from the group consisting of hydrogels, dehydrated hydrogels, water-soluble polymers, water-dispersible polymers, and combinations thereof; and
(B) a disintegration aid disposed in the shell layer, the disintegration aid exhibiting an absorption of 5 grams or more of solution per gram of disintegration aid as measured in an aqueous solution having an electrical conductivity of about 5 μS/cm or less, and the disintegration aid being selected from the group consisting of superabsorbent polymers, xerogels, and mixtures thereof.

25. The laundry care composition of claim 24 , wherein the laundry care ingredient is selected from the group consisting of surfactants, b

Assignees

• Fernandes Gregory E
• Macmeccan Robert M
• Milliken & Co

Inventors

• Fernandes Gregory E
• Macmeccan Robert M

Classifications

• C11D17/0039 Primary

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