Porous dissolvable solid structure with two benefit agents and methods of forming an aqueous treatment liquor therefrom

Patent metadata

Field	Value
Publication number	US-9827173-B2
Application number	US-201514702790-A
Country	US
Kind code	B2
Filing date	May 4, 2015
Priority date	May 5, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A method of forming an aqueous treatment liquor comprising a benefit agent, the method comprising the steps of: (a) providing a consumer product comprising: (i) a porous dissolvable solid structure, and (ii) a hydrophobic coating comprising a benefit agent, the hydrophobic coating applied to the porous dissolvable solid structure; (b) providing an aqueous solution; and (c) dissolving the consumer product in the aqueous solution to form an aqueous treatment liquor comprising a hydrophobic portion and an aqueous portion. The method provides a Capillary Number of less than about 1000.

First claim

What is claimed is:

1. A method of forming an aqueous treatment liquor comprising a benefit agent, said method comprising the steps of:
(a) providing a consumer product comprising:
(i) a porous dissolvable solid structure, and
(ii) a hydrophobic coating comprising a two or more benefit agents, said hydrophobic coating applied to said porous dissolvable solid structure, wherein a first benefit agent and a second benefit agent are premixed to form said hydrophobic coating prior to said hydrophobic coating being applied to said porous dissolvable solid structure;

(b) providing an aqueous solution; and
(c) dissolving said consumer product in said aqueous solution to form an aqueous treatment liquor comprising a hydrophobic portion and an aqueous portion;

wherein said method provides a Capillary Number of less than about 1000, and
wherein said hydrophobic coating has a first viscosity and said aqueous portion of said aqueous treatment liquor has a second viscosity, wherein a ratio of said first viscosity to said second viscosity is less than about 100:1.

2. The method of claim 1 , wherein said method provides a Capillary Number of less than about 500.

3. The method of claim 1 , wherein said first viscosity is less than about 500 Pa·s.

4. The method of claim 1 , wherein said first viscosity is less than about less than 14.5 Pa·s.

5. The method of claim 1 , wherein said second viscosity is from about 0.001 Pa·s to about 5 Pa·s.

6. The method of claim 1 , wherein said method further comprises the step of shearing said aqueous treatment liquor, preferably during the step of dissolving said consumer product in said aqueous solution.

7. The method of claim 1 , wherein said aqueous treatment liquor comprises particles having a particle size of from about 10 microns to about 500 microns.

8. The method of claim 1 , wherein said hydrophobic coating of said consumer product has an average thickness and/or maximum thickness of less than about 1000 microns.

9. The method of claim 1 , wherein said consumer product is selected from the group consisting of a beauty care product, hand washing product, body wash product, shampoo product, conditioner product, cosmetic product, hair removal product, laundry product, laundry rinse additive product, laundry detergent product, hard surface cleaning product, hand dishwashing product, automatic dishwashing product, and unit dose form automatic dishwashing or laundry product.

10. The method of claim 1 , wherein said consumer product comprises said hydrophobic coating applied to said porous dissolvable solid structure in an amount of from about 1% to about 70%, by weight of the consumer product.

11. The method of claim 1 , wherein said hydrophobic coating has an area density of application of less than about 250 μg per mm 2 of said porous dissolvable solid structure.

12. The method of claim 1 , wherein said porous dissolvable solid structure is in the form of a foam.

13. The method of claim 1 , wherein said porous dissolvable solid structure is in the form of fibrous web structure.

14. The method of claim 1 , wherein one of said benefit agent of said hydrophobic coating is selected from the group consisting of conditioning agent, perfume, and mixtures thereof.

15. The method of claim 14 , wherein said conditioning agent is selected from the group consisting of silicones, organic conditioning oils, hydrocarbon oils, fatty esters, metathesized unsaturated polyol esters, silane-modified oils, and mixtures thereof.

16. The method of claim 15 , wherein said conditioning agent is silicone.

17. The method of claim 16 , wherein said silicone is selected from the group consisting siloxanes, silicone gums, aminosilicones, terminal aminosilicones, alkyl siloxane polymers, cationic organopolysiloxanes, and mixtures thereof.

18. The method of claim 17 , wherein said silicone is terminal aminosilicone.

19. The method of claim 1 , wherein said hydrophobic coating is a first hydrophobic coating, and said consumer product further comprises a second hydrophobic coating comprising a third benefit agent, wherein said first hydrophobic coating and said second hydrophobic coating are discretely applied to said porous dissolvable solid structure.

20. The method of claim 19 , wherein said first hydrophobic coating and said second hydrophobic coating are applied to the same surface of said porous dissolvable solid structure.

21. The method of claim 19 , wherein said first hydrophobic coating and said second hydrophobic coating are respectively applied to opposing surfaces of said porous dissolvable solid structure.

22. The method of claim 1 , wherein said first benefit agent is conditioning agent and said second benefit agent is perfume.

23. The method of claim 1 , wherein said hydrophobic coating further comprises viscosity modifier, surfactant, or mixtures thereof.

Assignees

• Procter & Gamble

Inventors

• Lynch Matthew Lawrence
• Glenn Jr Robert Wayne
• Willman Joanne Roberta
• Kutay Benjamin John
• Sawin Philip Andrew
• Hamersky Mark William

Classifications

• A61K8/37

  Esters of carboxylic acids · CPC title

• A61K8/0216

  Solid or semisolid forms · CPC title

• A61Q19/10

  Washing or bathing preparations · CPC title

• A61K8/0279

  Porous; Hollow · CPC title

• C11D17/044

  Solid compositions · CPC title