Cleaning compositions containing alkyl sulfate surfactants and cationic polymer for holistic improvement of sudsing profile

Patent metadata

Field	Value
Publication number	US-2016237381-A1
Application number	US-201615016427-A
Country	US
Kind code	A1
Filing date	Feb 5, 2016
Priority date	Feb 13, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

The present invention relates to cleaning compositions containing one or more linear or branched C 6 -C 18 alkyl sulphate surfactants with a specific chain length distribution in combination with a cationic polymer containing one or more cationic structural unit with a cationic charge density ranging from 0.05 to 10 milliequivalents/g. Such cleaning compositions exhibit surprising and unexpected improvement in the sudsing profiles and are particularly suitable for use in hand-washing fabrics.

First claim

What is claimed is:

1 . A cleaning composition comprising:
(a) one or more linear or branched C 6 -C 18 alkyl sulphate (“AS”) surfactants, which comprise from 80% to 100% by weight of one or more linear or branched C 6 -C 14 AS surfactants; and (b) one or more cationic polymers comprising a cationic structural unit and having a cationic charge density ranging from 0.05 to 10 milliequivalents/g.

2 . The cleaning composition of claim 1 , wherein the one or more linear or branched C 6 -C 18 AS surfactants are substantially free of alkoxylation, and preferably essentially free of alkoxylation.

3 . The cleaning composition of claim 1 , comprising a mixture of two or more linear AS surfactants that comprises (1) a linear C 12 AS surfactant in the amount ranging from 30% to 100%, preferably from 50% to 95%, and more preferably from 65% to 80%, by total weight of said mixture; (2) a linear C 14 AS surfactant in the amount ranging from 0% to 70%, preferably from 5% to 50%, and more preferably from 20% to 30%, by total weight of said mixture; and (3) a linear C 16 AS surfactant in the amount ranging from 0% to 30%, preferably from 1% to 20%, and more preferably from 4% to 10% by total weight of said mixture.

4 . The cleaning composition of claim 3 , wherein said mixture comprises less than 10%, preferably less than 5%, and more preferably less than 2% of linear AS surfactants having either 18 carbon atoms or more, or 10 carbon atoms or less, by total weight of said mixture.

5 . The cleaning composition of claim 1 , comprising one or more branched C 6 -C 18 AS surfactants having the general formula (I):

wherein M is a cation of alkali metal, alkaline earth metal or ammonium; x and y are independently selected from integers ranging from 0 to 14; wherein z is an integer ranging from 1 to 4; wherein the sum of x+y is equal to or greater than z; and wherein the sum of x+y+z ranges from 3 to 15.

6 . The cleaning composition of claim 5 , wherein z is 1, and wherein the sum of x+y is from 8 to 9.

7 . The cleaning composition of claim 1 , comprising a mixture of two or more branched AS surfactants that comprises (1) a branched C 12 AS surfactant in the amount ranging from 20% to 80%, preferably from 30% to 70%, and more preferably from 35% to 50%, by total weight of said mixture; and (2) a branched C 13 AS surfactant in the amount ranging from 20% to 80%, preferably from 30% to 70%, and more preferably from 35% to 50%, by total weight of said mixture.

8 . The cleaning composition according to claim 1 , wherein the one or more linear or branched C 6 -C 18 AS surfactants are present in an amount ranging from 0.1% to 30%, preferably from 0.5% to 20%, and more preferably from 1% to 10%, by total weight of the cleaning composition.

9 . The cleaning composition according to claim 1 , wherein said one or more cationic polymers have a cationic charge density ranging from 0.1 to 5 milliequivalents/g, preferably from 0.3 to 4 milliequivalents/g, and more preferably from 0.6 to 3 milliequivalents/g.

10 . The cleaning composition according to claim 1 , wherein said one or more cationic polymers have a weight average molecular weight (Mw) ranging from 10,000 to 3,000,000 Daltons, preferably from 20,000 to 2,000,000 Daltons, more preferably from 30,000 to 1,500,000 Daltons, and most preferably from 40,000 to 200,000 Daltons.

11 . The cleaning composition according to claim 1 , wherein the cationic structural unit of the one or more cationic polymers are derived from a monomer selected from the group consisting of diallyl dimethyl ammonium salts (“DADMAS”), N,N-dimethyl aminoethyl acrylate, N,N-dimethyl aminoethyl methacrylate (“DMAM”), [2-(methacryloyl amino)ethyl]tri-methylammonium salts, N,N-dimethylaminopropyl acrylamide (DMAPA), N,N-dimethylaminopropyl methacrylamide (“DMAPMA”), acrylamidopropyl trimethyl ammonium salts (“APTAS”), methacrylamidopropyl trimethylammonium salts (“MAPTAS”), quaternized vinylimidazole (“QVi”), and combinations thereof, and preferably said cationic structural unit is derived from diallyl dimethyl ammonium chloride (“DADMAC”).

12 . The cleaning composition of claim 11 , wherein said one or more cationic polymers comprise 1 mol % to 100 mol %, preferably from 5 mol % to 100 mol %, more preferably from 5 mol % to 60 mol %, and most preferably from 5 mol % to 20 mol %, of said cationic structural unit.

13 . The cleaning composition according to claim 1 , wherein said one or more cationic polymers comprise a first nonionic structural unit derived from (meth)acrylamide (“AAm”), which is preferably present in said one or more cationic polymers in an amount ranging from 0 mol % to 99 mol %, preferably from 10 mol % to 95 mol %, and more preferably from 15 mol % to 90 mol %.

14 . The cleaning composition of claim 13 , wherein said one or more cationic polymers further comprise a second nonionic structural unit derived from a monomer selected from the group consisting of vinylpyrrolidone (“VP”), vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl pyridine, vinyl imidazole, vinyl caprolactam, and combinations thereof, and wherein said second nonionic structural unit is preferably VP.

15 . The cleaning composition of claim 14 , wherein said one or more cationic polymers comprises from 0 mol % to 50 mol %, preferably from 0 mol % to 30 mol %, and more preferably from 5 mol % to 25 mol %, of said second nonionic structural unit.

16 . The cleaning composition according to claim 1 , wherein said cationic polymer is present in an amount ranging from 0.01% to 20%, preferably from 0.05% to 10%, more preferably from 0.1% to 5%, and most preferably from 0.2% to 4% by total weight of the cleaning composition.

17 . The cleaning composition according to claim 1 , further comprising one or more additional surfactants selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants, and combinations thereof.

18 . The cleaning composition of claim 17 , wherein said additional surfactants comprise: (1) from 1% to 90% by weight of one or more anionic surfactants selected from the group consisting of C 10 -C 20 linear alkyl benzene sulphonates, C 10 -C 20 linear or branched alkylalkoxy sulfates having an average degree of alkoxylation ranging from 0.1 to 5.0, C 10 -C 20 linear or branched alkyl sulphonates, C 10 -C 20 linear or branched alkyl phosphates, C 10 -C 20 linear or branched alkyl phosphonates, C 10 -C 20 linear or branched alkyl carboxylates, and combinations thereof; and (2) optionally, from 0.05% to 10% by weight of one or more nonionic surfactants selected from the group consisting of C 8 -C 18 alkyl alkoxylated alcohols having a weight average degree of alkoxylation ranging from 1 to 20 and combinations thereof.

19 . The cleaning composition according to claim 1 , which is preferably a granular or liquid laundry detergent composition, and more preferably a liquid laundry detergent composition.

20 . A liquid laundry detergent composition comprising:
(a) from 0.5% to 5% by weight of a linear C 12 AS surfactant; (b) from 0.1% to 2% by weight of a linear C 14 AS surfactant; (c) from 0.05% to 1% by weight of a linear C 16 AS surfactant; (d) from 0.1% to 2% by weight of a cationic polymer which is a copolymer or terpolymer containing a first cationic structural uni

Assignees

• Procter & Gamble

Inventors

• Chen Meng
• Tang Ming
• Si Gang
• Zhang Yang
• Zhang Qi
• Flores-Figueroa Aaron

Classifications

• C11D1/37

  Mixtures of compounds all of which are anionic · CPC title

• C11D3/3769

  (Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines · CPC title

• C11D3/0026

  Low foaming or foam regulating compositions · CPC title

• C11D1/22

  derived from aromatic compounds · CPC title

• C11D3/3776 Primary

  Heterocyclic compounds, e.g. lactam · CPC title