Particulate laundry softening wash additive

Patent metadata

Field	Value
Publication number	US-11186803-B2
Application number	US-201916703054-A
Country	US
Kind code	B2
Filing date	Dec 4, 2019
Priority date	Dec 4, 2018
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

A composition including a plurality of particles, the 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; wherein each of the individual particles has a mass from about 1 mg to about 1 g; wherein each of the individual particles has a density less than about 0.98 g/cm 3 .

First claim

What is claimed is:

1. A composition comprising a plurality of particles, said plurality of particles comprising:
25% to 94% by weight a water soluble carrier;
10% to 45% by weight a quaternary ammonium compound; and
0.5% to 10% by weight a cationic polymer;
wherein said plurality of particles comprises individual particles, each individual particle having a mass from 1 mg to 1 g; and
wherein said water soluble carrier is selected from the group consisting of EO/PO/EO block copolymer, PO/EO/PO block copolymer, EO/PO block copolymer, PO/EO block copolymer, and combinations thereof, wherein EO is a —CH 2 CH 2 O— group and PO is a —CH(CH 3 )CH 2 O— group.

2. The composition according to claim 1 , wherein said water soluble carrier is selected from the group consisting of R 1 O-(EO)x-(PO)y-R 2 , R 1 O—(PO)x-(EO)y-R 2 , R 1 -(EO)o-(PO)p-(EO)q-R 2 , R 1 O—(PO)o-(EO)p-(PO)q-R 2 , or a combination thereof, wherein
R 1 and R 2 independently is H or a C1-C22 alkyl group;
x, y, o, p, and q independently is 1 to 100, the sum of x and y is greater than 35, and the sum of o, p and q is greater than 35; and
wherein the block copolymer has a weight average molecular weight ranging from 3000 to 15,000.

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

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

5. The composition according to claim 1 , wherein said plurality of particles comprises 10% to 40% by weight said quaternary ammonium compound.

6. The composition according to claim 1 , wherein said plurality of particles comprises 1% to 5% by weight said cationic polymer.

7. The composition according to claim 1 , wherein said cationic polymer is a cationic polysaccharide.

8. The composition according to claim 1 , wherein said plurality of particles further comprises from 1% to 40% by weight fatty acid.

9. The composition according to claim 1 , wherein said quaternary ammonium compound is di-(tallowoyloxyethyl)-N,N-methylhydroxyethylammonium methyl sulfate.

10. The composition according to claim 1 , wherein said cationic polymer is a cationic polysaccharide, wherein said cationic polysaccharide is polymeric quaternary ammonium salt of hydroxyethylcellulose which has been reacted with an epoxide substituted with a trimethylammonium group.

11. The composition according to claim 1 , wherein said individual particles are less than 10% by weight water.

12. The composition according to claim 1 , wherein said individual particles are homogeneously or substantially homogeneously structured individual particles.

13. The composition according to claim 1 , wherein said individual particles comprise said carrier, said quaternary ammonium compound, and said cationic polymer.

14. The composition according to claim 1 , wherein said individual particles are compositionally the same as one another.

15. The composition according to claim 1 wherein more than about 50% by weight of said particles are retained on a number 10 sieve according to ASTM International, ASTM E11-13.

16. The composition according to claim 1 , wherein said quaternary ammonium compound is formed from a parent fatty acid compound having an Iodine Value from 20 to 60.

17. The composition according to claim 16 , wherein said quaternary ammonium compound is an ester quaternary ammonium compound.

18. The composition according to claim 17 , wherein said cationic polymer is a cationic polysaccharide.

19. The composition according to claim 18 , wherein said individual particles are homogeneously or substantially homogeneously structured individual particles.

20. The composition according to claim 19 , wherein said water soluble carrier is selected from the group consisting of R 1 O-(EO)x-(PO)y-R 2 , R 1 O—(PO)x-(EO)y-R 2 , R 1 O-(EO)o-(PO)p-(EO)q-R 2 , R 1 O—(PO)o-(EO)p-(PO)q-R 2 , or a combination thereof, wherein
R 1 and R 2 independently is H or a C1-C22 alkyl group;
x, y, o, p, and q independently is 1 to 100, the sum of x and y is greater than 35, and the sum of a, p and q is greater than 35; and
wherein the block copolymer has a weight average molecular weight ranging from 3000 to 15,000.

21. 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 1 .

Assignees

• Procter & Gamble

Inventors

• Corona Iii Alessandro
• Fontaine Michael Paul
• Johnson Lenae Virginia
• Panandiker Rajan Keshav
• Schmitt Charles L
• Zerhusen Jaden Scott

Classifications

• C11D1/835

  Mixtures of non-ionic with cationic compounds · CPC title

• C11D3/001 Primary

  Softening compositions · CPC title

• C11D1/72

  Ethers of polyoxyalkylene glycols · CPC title

• C11D3/227

  with nitrogen-containing groups · CPC title

• C11D17/06

  Powder; Flakes; Free-flowing mixtures; Sheets · CPC title