Fabric care compositions comprising a poly(diallyldimethylammonium chloride-co-acrylic acid), process of making, and method of use

• US 8,372,795 B2
• Filed: 08/28/2009
• Issued: 02/12/2013
• Est. Priority Date: 08/28/2008
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Corona, Alessandro III, Frankenbach, Gayle Marie, Lindberg, Seth Edward, Sivik, Mark Robert, Spicer, Patrick Thomas, Waning, Gregory Thomas
• Primary Examiner(s): BOYER, CHARLES I
• Application Number:
  US12/549,413
• Publication Number:
  US 20100056421A1
• Time in Patent Office: 1,264 Days
• Field of Search: 510/276, 510/290, 510/300, 510/305, 510/426, 510/438, 510/443, 510/444
• US Class Current: 510/438
• CPC Class Codes: C11D 17/003 Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
• CPC Class Codes: C11D 2111/44 Multi-step processes
• CPC Class Codes: C11D 2111/46 applying energy, e.g. irradiation
• CPC Class Codes: C11D 3/0021 Dye-stain or dye-transfer inhibiting compositions
• CPC Class Codes: C11D 3/227 with nitrogen-containing groups
• CPC Class Codes: C11D 3/3723 Polyamines or polyalkyleneimines
• CPC Class Codes: C11D 3/3773 in liquid compositions
• CPC Class Codes: C11D 3/3776 Heterocyclic compounds, e.g. lactam

Abstract

The instant disclosure relates to processes for making stable compositions via combining a mixture containing at least one cationic polymer and a mixture containing at least one anionic surfactant in the presence of a high energy dispersion step, followed by incorporation of an external structurant using a low energy dispersion step, and compositions made according to the disclosed processes.

Claims

1. A process for preparing a fabric care composition comprising a structured phase and optionally, a continuous phase, comprising the steps of

a. combining a polymer mixture comprising poly(diallyldimethylammonium chloride-co-acrylic acid) and a surfactant mixture comprising an anionic surfactant and an enzyme using high energy dispersion to form a premix comprising particles comprising poly(diallyldimethylammonium chloride-co-acrylic acid) and anionic surfactant;

b. introducing a structurant into said premix using low energy dispersion to form a stable composition;

wherein said stable composition has a resting viscosity of from about 10,000 to about 50,000 cps at 0.05/s.

2. A process according to claim 1 wherein said high energy dispersion of step (a) has an Energy Density of from about 0.1 to about 100 J/ml.

3. A process according to claim 1 wherein said high energy dispersion of step (a) is generated from a power density of from about 0.01 to about 1,000,000 W/ml, wherein the residence time is from about 1 millisecond to about 10 seconds.

4. A process according to claim 1 wherein said low energy dispersion of step (b) has an energy density from about 0.001 to about 1 J/ml.

5. A process according to claim 1 wherein said low energy dispersion of step (b) has an energy density generated from a power density of from about 0.01 to about 1,000,000 W/ml wherein the residence time may be from about 1 millisecond to about 10 seconds.

6. A process according to claim 1 wherein said particles comprise primary particles having a particle size of from about 0.05 to about 500 μ

m.

7. A process according to claim 1 wherein said particles comprise colloidal particles having a particle size of from about 0.05 to about 1000 μ

m.

8. A process according to claim 1, wherein said polymer mixture comprises a cationic polymer having a charge density of from about 0.05 to about 7 meq/g at a pH of from about 3 to about 9.

9. A process according to claim 1, wherein said polymer mixture comprises a cationic polymer having a weight average molecular weight of from about 500 to about 10,000,000 Daltons.

10. A process according to claim 1, wherein said polymer mixture comprises a cationic polymer having a weight-average molecular weight less than 37,500 Daltons and a charge density greater than about 5 meq/g.

11. A process according to claim 1 wherein the polymer mixture has a viscosity of from about 1 to about 1,000 cps at 20/sec.

12. A process according to claim 1 wherein the polymer mixture is isotropic.

13. A process according to claim 1 wherein the polymer mixture comprises a surfactant.

14. A process according to claim 1, wherein said surfactant mixture comprises a surfactant having an HLB of from about 4 to about 14.

15. A process according to claim 1, wherein said surfactant mixture comprises alkylethoxylated sulfate.

16. A process according to claim 1 wherein said surfactant mixture is isotropic.

17. A process according to claim 1 wherein one or both of the polymer mixture and/or surfactant mixture comprises a dispersing agent.

18. A process for preparing a fabric care composition comprising a structured phase and optionally, a continuous phase, comprising the steps of

a. combining a polymer mixture comprising poly(diallyldimethylammonium chloride-co-acrylic acid) and a surfactant mixture comprising alkyl ethoxylate sulfate using high energy dispersion to form a premix comprising particles comprising poly(diallyldimethylammonium chloride-co-acrylic acid) and alkyl ethoxylate sulfate;

b. introducing a structurant into said premix using low energy dispersion to form a stable composition;

wherein said stable composition has a resting viscosity of from about 10,000 to about 50,000 cps at 0.05/s.

19. A process according to claim 18 wherein said particles comprise colloidal particles having a particle size of from about 1 to about 50 μ

m.