Methods for making encapsulate-containing product compositions

• US 10,385,297 B2
• Filed: 03/16/2017
• Issued: 08/20/2019
• Est. Priority Date: 03/16/2017
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Song, Xinbei, Wildemuth, Douglas James, Kenneally, Corey James, Verstraete, Pierre, Fasbender, Oliver
• Primary Examiner(s): Douyon, Lorna M
• Application Number:
  US15/460,272
• Publication Number:
  US 20180265826A1
• Time in Patent Office: 887 Days
• Field of Search: None
• CPC Class Codes: C11D 17/0013 Liquid compositions with insoluble particles in suspension C11D17/0021, C11D17/0026, C11D17/003 take precedence
• CPC Class Codes: C11D 17/0039 Coated compositions or coated components in the compositions, (micro)capsules
• CPC Class Codes: C11D 3/042 Acids
• CPC Class Codes: C11D 3/044 Hydroxides or bases
• CPC Class Codes: C11D 3/166 containing borium
• CPC Class Codes: C11D 3/3753 Polyvinylalcohol; Ethers or esters thereof
• CPC Class Codes: C11D 3/3765 in liquid compositions
• CPC Class Codes: C11D 3/505 encapsulated or adsorbed on a carrier, e.g. zeolite or clay
• CPC Class Codes: C11D 7/06 Hydroxides
• CPC Class Codes: C11D 7/08 Acids
• CPC Class Codes: C11D 7/22 Organic compounds

Abstract

Methods relating to making product compositions that include encapsulates and borate compounds, where the encapsulates include polyvinyl alcohol polymer. Compositions made from such methods.

Claims

1. A method of making a detergent composition, comprising the steps of:

a. providing a slurry comprising from about 20 wt % to about 60 wt % of encapsulates and diluting the slurry with a diluent comprising water and an external structurant to form a first composition comprising encapsulates,

wherein the first composition comprises no more than about 15 wt % of the encapsulates,

wherein the encapsulates comprise polyvinyl alcohol polymer; and

wherein the encapsulates are microcapsules that comprise a core and a shell at least partially surrounding the core, wherein the core comprises a benefit agent, and wherein the shell comprises at least a portion of the polyvinyl alcohol polymer;

b. combining the first composition with a second composition comprising a borate compound, thereby forming a product composition.

2. A method according to claim 1, wherein the benefit agent of the core comprises perfume raw materials.

3. A method according to claim 1, wherein the core further comprises a partitioning modifier.

4. A method according to claim 1, wherein the shell comprises a shell material selected from the group consisting of polyethylenes;

polyamides;

polystyrenes;

polyisoprenes;

polycarbonates;

polyesters;

polyacrylates;

acrylics;

aminoplasts;

polyolefins;

polysaccharides;

gelatin;

shellac;

epoxy resins;

vinyl polymers;

water insoluble inorganics;

silicone; and

mixtures thereof.

5. A method according to claim 1, wherein the shell comprises a shell material selected from the group consisting of a polyacrylate, a polyethylene glycol acrylate, a polyurethane acrylate, an epoxy acrylate, a polymethacrylate, a polyethylene glycol methacrylate, a polyurethane methacrylate, an epoxy methacrylate, and mixtures thereof.

6. A method according to claim 5, wherein the shell material comprises a polyacrylate.

7. A method according to claim 1, wherein the encapsulates have a volume weighted mean encapsulate size of from about 0.5 microns to about 100 microns.

8. A method according to claim 1, wherein the borate compound is selected from the group consisting of boric acid, boric acid derivatives, and combinations thereof.

9. A method according to claim 1, wherein the borate compound is present in the product composition at a level of about 0.1 wt % to about 4 wt %.

10. A method according to claim 1, wherein the diluent further comprises organic solvent, surfactant, or combinations thereof.

11. A method according to claim 1, wherein the product composition comprises from about 0.1 wt % to about 5 wt % of the encapsulates.

12. A method according to claim 1, wherein the product composition further comprises an enzyme.

13. A method according to claim 1, wherein the product composition further comprises an external structurant.

14. A method according to claim 1, wherein the product composition comprises from about 5 wt % to about 60 wt % of a surfactant system.

15. A method according to claim 1, wherein either the first composition or the second composition is a base detergent comprising from about 5 wt % to about 60 wt % of a surfactant system.