Methods for making encapsulate-containing product compositions

• US 10,385,296 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, Smets, Johan, Vansteenwinckel, Pascale Claire Annick, Scheibel, Jeffrey John
• Primary Examiner(s): Douyon, Lorna M
• Application Number:
  US15/460,279
• Publication Number:
  US 20180265824A1
• 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 3/04 Water-soluble compounds
• 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 3/227 with nitrogen-containing groups
• CPC Class Codes: C11D 3/3753 Polyvinylalcohol; Ethers or esters thereof
• CPC Class Codes: C11D 3/3773 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, borate compounds, and a cationic polysaccharide, where the encapsulates include polyvinyl alcohol polymer. Compositions made from such methods. Encapsulate slurries.

Claims

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

a. providing a first composition comprising encapsulates and a second composition,

wherein the encapsulates comprise a polyvinyl alcohol polymer;

wherein the first composition is an encapsulate slurry comprising from about 10% to about 60%, by weight of the first composition, of encapsulates and from about 0.1% to about 10% by weight of the first composition, of a cationic polysaccharide,

wherein the encapsulates 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;

wherein the second composition comprises a borate compound; and

b. combining the first composition and the second composition to form 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 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.

4. 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.

5. A method according to claim 1, wherein the shell comprises a polyacrylate.

6. 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.

7. 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 10 wt %, by weight of the product composition.

8. A method according to claim 1, wherein the second composition further comprises a cationic polysaccharide.

9. A method according to claim 1, wherein the cationic polysaccharide is a cationic cellulose derivative.

10. A method according to claim 1, wherein the cationic cellulose derivative is selected from the group consisting of cationic hydroxyethylcellulose, cationic hydroxypropylcellulose, and mixtures thereof.

11. A method according to claim 10, wherein the cationic hydroxyethylcellulose comprises hydroxyethyl cellulose derivatized with trimethyl ammonium substituted epoxide.

12. A method according to claim 1, wherein the cationic polysaccharide is characterized by a weight average molecular weight of from greater than 100,000 to 2,000,000.

13. A method according to claim 1, wherein the product composition comprises from about 0.01 wt % to about 5 wt % of the encapsulates.

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

15. A method according to claim 1, wherein the product composition comprises no more than 5 encapsulates per gram of product composition, as determined by the Method for Determining Number of Particles (“

AN212 Method”

).

16. 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 75 wt % of a surfactant system.