Method of preparing a detergent composition comprising a cationic polymer with a silicone/surfactant mixture

• US 9,725,680 B2
• Filed: 08/25/2015
• Issued: 08/08/2017
• Est. Priority Date: 08/27/2014
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Doria, Heather Anne, Aguilera-Mercado, Bernardo, Whiting, Patrick Brian, Barrera, Carola, Vetter, Nicholas David, Flores-Figueroa, Aaron, Fossum, Renae Dianna, Birkel, Susanne, Panandiker, Rajan Keshav, Sivik, Mark Robert
• Primary Examiner(s): BOYER, CHARLES I
• Application Number:
  US14/834,468
• Publication Number:
  US 20160060575A1
• Time in Patent Office: 714 Days
• CPC Class Codes: C11D 1/02 Anionic compounds C11D1/002, C11D1/004, C11D1/008 take precedence
• CPC Class Codes: C11D 1/83 Mixtures of non-ionic with anionic compounds
• CPC Class Codes: C11D 11/0094 Process for making liquid detergent compositions, e.g. slurries, pastes or gels
• CPC Class Codes: C11D 17/043 Liquid or thixotropic (gel) compositions
• CPC Class Codes: C11D 2111/12 Soft surfaces, e.g. textile
• CPC Class Codes: C11D 3/001 Softening compositions
• CPC Class Codes: C11D 3/3719 Polyamides or polyimides
• CPC Class Codes: C11D 3/373 containing silicones
• CPC Class Codes: C11D 3/3742 Nitrogen containing silicones
• CPC Class Codes: C11D 3/3769 (Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
• CPC Class Codes: C11D 3/3773 in liquid compositions

Abstract

A method of preparing a detergent composition that includes anionic surfactant, silicone, and cationic polymer. Detergent compositions prepared according the method.

Claims

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

a. providing a base detergent composition, wherein said base detergent comprises anionic surfactant and nonionic surfactant;

b. combining a silicone emulsion with said base detergent, thereby forming a silicone-surfactant mixture, wherein the silicone emulsion comprises a protonated amino silicone, a solvent, an emulsifier, and a protonating agent,

wherein said solvent is selected from the group consisting of a glycol ether, an alkyl ether, an alcohol, an aldehyde, a ketone, an ester, and mixtures thereof,

wherein said protonating agent is selected from the group consisting of formic acid, acetic acid, propionic acid, malonic acid, citric acid, hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, and mixtures thereof,

wherein said silicone emulsion is a silicone nanoemulsion, wherein the average particle size of said nanoemulsion is from about 20 nm to about 500 nm; and

c. combining a cationic polymer with said silicone-surfactant mixture, thereby forming a finished detergent composition,

wherein the cationic polymer is characterized by a weight average molecular weight of from about 5 kDaltons to about 200 kDaltons,

wherein said anionic surfactant and said nonionic surfactant are in a surfactant ratio of from about 1.1;

1 to about 4;

1 in said finished detergent composition,

wherein said finished detergent composition comprises from about 0.1% to about 15%, by weight of said finished detergent composition, of silicone,

wherein said finished detergent composition comprises from about 0.1% to about 2%, by weight of said finished detergent composition, of said cationic polymer.

2. A method according to claim 1, wherein said anionic surfactant and said nonionic surfactant are in a surfactant ratio of from about 1.1:

1 to about 4;

1 in said base detergent composition.

3. A method according to claim 1, wherein said emulsifier comprises nonionic surfactant.

4. A method according to claim 1, wherein said protonating agent is acetic acid.

5. A method according to claim 1, wherein said cationic polymer is characterized by a weight average molecular weight of from about 10 kDaltons to about 100 kDaltons.

6. A method according to claim 1, wherein said cationic polymer is characterized by a calculated cationic charge density of from about 0.5 meq/g to about 12 meq/g.

7. A method according to claim 6, wherein said cationic polymer is characterized by a calculated cationic charge density of from about 4 meq/g to about 8 meq/g.

8. A method according to claim 1, wherein said cationic polymer comprises a first structural unit derived from acrylamide, and wherein said cationic deposition polymer further comprises a second structural unit derived from DADMAS.

9. A method according to claim 8, wherein said first structural unit and said second structural unit are in a structural unit ratio of from about 5:

95 to about 45;

55.

10. A method according to claim 8, wherein said first structural unit and said second structural unit are in a structural unit ratio of from about 15:

85 to about 30;

70.

11. A method according to claim 1, wherein said base detergent comprises from about 1% to about 70%, by weight of said base detergent, anionic surfactant.

12. A method according to claim 1, wherein said base detergent composition further comprises at least about 25%, by weight of said base detergent composition, of water.

13. A method according to claim 1, wherein other laundry adjuncts are added to said silicone-surfactant composition, to said finished detergent composition, or both.

14. A method according to claim 13, wherein said laundry adjuncts comprise external structuring systems, enzymes, microencapsulates, soil release polymers, hueing agents, or mixtures thereof.

15. A method according to claim 1, wherein the finished detergent composition comprises an external structuring system comprising a non-polymeric crystalline, hydroxy-functional structurant.

16. A method according to claim 15, wherein the non-polymeric crystalline, hydroxy-functional structurant is added after the silicone is added.

17. A method according to claim 1, wherein said finished detergent composition is encapsulated in a pouch, wherein said pouch comprises water-soluble film.

18. A detergent composition formed by the method of claim 1.

19. A detergent composition according to claim 18, wherein said detergent composition is substantially free of Maltese crosses when viewed with cross-polarized light microscopy.

25. A method according to claim 1, wherein said anionic surfactant comprises linear alkyl benzene sulfonate (LAS) and alkyl ethoxylated sulfate (AES), and wherein said nonionic surfactant comprises alkoxylated fatty alcohols.

20. A method of preparing a detergent composition, comprising the steps of:

a. providing a base detergent composition, wherein said base detergent comprises anionic surfactant and nonionic surfactant in a ratio of from about 1.1;

1 to about 4;

1,

wherein said base detergent comprises from about 1% to about 70%, by weight of said base detergent, anionic surfactant,

wherein said anionic surfactant comprises linear alkyl benzene sulfonate (LAS) and alkyl ethoxylated sulfate (AES), and

wherein said nonionic surfactant comprises alkoxylated fatty alcohols;

b. combining a silicone nanoemulsion with said base detergent, thereby forming a silicone-surfactant mixture, wherein the silicone nanoemulsion comprises a protonated amino silicone, a solvent, an emulsifier, and a protonating agent; and

c. combining a cationic polymer with said silicone-surfactant mixture, thereby forming a finished detergent composition, wherein the cationic polymer is characterized by a molecular weight of less than about 200 kDaltons, and wherein the cationic polymer is further characterized by a calculated charge density of from about 4 meq/g to about 12 meq/g,

wherein said cationic polymer comprises a first structural unit derived from acrylamide, and wherein said cationic deposition polymer further comprises a second structural unit derived from DADMAS.

21. A method according to claim 20, wherein said silicone nanoemulsion is characterized by an average particle size of from about 50 nm to about 250 nm.

22. A method according to claim 20, wherein said linear alkyl benzene sulfonate (LAS) and said alkyl ethoxylated sulfate (AES) are present in a weight ratio of from about 1:

9 to about 9;

1.

23. A method according to claim 22, wherein said linear alkyl benzene sulfonate (LAS) and said alkyl ethoxylated sulfate (AES) are present in a weight ratio of from about 1:

4 to about 4;

1.

24. A method according to claim 23, wherein said linear alkyl benzene sulfonate (LAS) and said alkyl ethoxylated sulfate (AES) are present in a weight ratio of from about 1:

2 to about 2;

1.