Particulate laundry softening wash additive

• US 10,640,731 B2
• Filed: 11/29/2018
• Issued: 05/05/2020
• Est. Priority Date: 12/01/2017
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Zerhusen, Jaden Scott, Panandiker, Rajan Keshav, Fontaine, Michael Paul, Johnson, Lenae Virginia, Corona, III, Alessandro
• Primary Examiner(s): Hardee, John R
• Application Number:
  US16/203,911
• Publication Number:
  US 20190169539A1
• Time in Patent Office: 523 Days
• CPC Class Codes: C11D 1/62 Quaternary ammonium compounds
• CPC Class Codes: C11D 17/06 Powder; Flakes; Free-flowing mixtures; Sheets
• CPC Class Codes: C11D 2111/12 Soft surfaces, e.g. textile
• CPC Class Codes: C11D 3/001 Softening compositions
• CPC Class Codes: C11D 3/046 Salts
• CPC Class Codes: C11D 3/08 Silicates
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/2079 Monocarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/222 Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
• CPC Class Codes: C11D 3/223 oxidised
• CPC Class Codes: C11D 3/227 with nitrogen-containing groups
• CPC Class Codes: C11D 3/30 Amines; Substituted amines ; Quaternized amines
• CPC Class Codes: C11D 3/3707 Polyethers, e.g. polyalkyleneoxides

Abstract

A composition including a plurality of particles, the plurality of particles including: about 25% to about 94% by weight a water soluble carrier; about 5% to about 45% by weight a quaternary ammonium compound; and about 0.5% to about 10% by weight a cationic polymer; wherein the plurality of particles comprises individual particles that comprise at least one of the quaternary ammonium compound and the cationic polymer; wherein the individual particles differ from one another in weight fraction of at least one of the quaternary ammonium compound and the cationic polymer; and wherein the individual particles each have a mass from about 1 mg to about 1 g.

Claims

1. A composition comprising a plurality of particles, said plurality of particles comprising:

about 25% to about 94% by weight a water soluble carrier;

about 5% to about 45% by weight a quaternary ammonium compound; and

about 0.5% to about 10% by weight a cationic polymer;

wherein said plurality of particles comprises individual particles that comprise at least one of said quaternary ammonium compound and said cationic polymer; and

wherein said individual particles differ from one another in weight fraction of at least one of said quaternary ammonium compound and said cationic polymer; and

wherein said individual particles each have a mass from about 1 mg to about 1 g; and

wherein said plurality of particles comprises about 1% to about 40% by weight a fatty acid.

2. The composition according to claim 1, wherein said quaternary ammonium compound formed from a parent fatty acid compound having an Iodine Value from about 18 to about 60.

3. The composition according to claim 2, wherein said quaternary ammonium compound is an ester quaternary ammonium compound.

4. The composition according to claim 3, wherein said cationic polymer is a cationic polysaccharide.

5. The composition according to claim 4, wherein said quaternary ammonium compound is di-(tallowoyloxyethyl)-N,N-methylhydroxyethylammonium methyl sulfate.

6. The composition according to claim 4, wherein said cationic polysaccharide is polymeric quaternary ammonium salt of hydroxyethylcellulose which has been reacted with an epoxide substituted with a trimethylammonium group.

7. The composition according to claim 4 wherein said water soluble carrier is selected from the group consisting of polyethylene glycol, sodium acetate, sodium bicarbonate, sodium chloride, sodium silicate, polypropylene glycol polyoxoalkylene, polyethylene glycol fatty acid ester, polyethylene glycol ether, sodium sulfate, starch, and mixtures thereof.

8. The composition according to claim 4, wherein each of said individual particles have an onset of melt from about 25°

C. to about 120°

C.

9. The composition according to claim 1, wherein said quaternary ammonium compound is an ester quaternary ammonium compound.

10. The composition according to claim 9, wherein said cationic polymer is a cationic polysaccharide.

11. The composition according to claim 10, wherein said quaternary ammonium compound formed from a parent fatty acid compound having an Iodine Value from about 18 to about 60.

12. The composition according to claim 10, wherein said quaternary ammonium compound is di-(tallowoyloxyethyl)-N,N-methylhydroxyethylammonium methyl sulfate.

13. The composition according to claim 10, wherein said cationic polysaccharide is polymeric quaternary ammonium salt of hydroxyethylcellulose which has been reacted with an epoxide substituted with a trimethylammonium group.

14. The composition according to claim 10 wherein said water soluble carrier is selected from the group consisting of polyethylene glycol, sodium acetate, sodium bicarbonate, sodium chloride, sodium silicate, polypropylene glycol polyoxoalkylene, polyethylene glycol fatty acid ester, polyethylene glycol ether, sodium sulfate, starch, and mixtures thereof.

15. The composition according to claim 10, wherein each of said individual particles have an onset of melt from about 25°

C. to about 120°

C.

16. A process for treating an article of clothing comprising the steps of:

providing an article of clothing in a washing machine; and

contacting said article of clothing during a wash sub-cycle of said washing machine with the composition according to claim 10.

17. The composition according to claim 1, wherein a melt of said individual particles has a viscosity from about 1 Pa-s to about 10 Pa-s at 65°

C.

18. The composition according to claim 17,

wherein said quaternary ammonium compound formed from a parent fatty acid compound having an Iodine Value from about 18 to about 60;

and

wherein said cationic polymer is a cationic polysaccharide.

19. A process for treating an article of clothing comprising the steps of:

providing an article of clothing in a washing machine; and

contacting said article of clothing during a wash sub-cycle of said washing machine with the composition according to claim 4.