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(12) United States Patent (10) Patent No.: US 9,334,465 B2 Fernandez Prieto Et Al

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(12) United States Patent (10) Patent No.: US 9,334,465 B2 Fernandez Prieto Et Al USOO9334465B2 (12) United States Patent (10) Patent No.: US 9,334,465 B2 Fernandez Prieto et al. (45) Date of Patent: May 10, 2016 (54) STRUCTURING USING AN EXTERNAL USPC .................................................. 510/535, 353 STRUCTURANT AND A COSMOTROPE See application file for complete search history. (71) Applicant: The Procter & Gamble Company, (56) References Cited Cincinnati, OH (US) U.S. PATENT DOCUMENTS (72) Inventors: Susana Fernandez Prieto, Benicarlo 5,916,967 A * 6/1999 Jones ..................... A61K 8,731 (BE); Johan Smets, Lubbeek (BE); 510/405 Vincent Josep Nebot Carda, Vila Real 8,222, 197 B2* 7/2012 Fernandez Prieto . C07C 237/22 510,303 (ES); Beatriu Escuder Gil, Sant Mateu 8,236,748 B2* 8/2012 Fernandez Prieto . C07C 237/22 (ES); Juan Felipe Miravet-Celades, 510,501 Castellon (ES) 2008/0057005 A1 3/2008 Lehn et al. 2008, 0087293 A1* 4, 2008 Glenn ................ A45D 19,0008 132/210 (73) Assignee: The Procter & Gamble Company, 2009, O124.533 A1 5, 2009 Kottke et al. Cincinnati, OH (US) 2011/0166291 A1 7, 2011 Turk et al. 2011 O220537 A1* 9, 2011 Fernandez-Prieto CO7C 237/22 (*) Notice: Subject to any disclaimer, the term of this 206,524.7 patent is extended or adjusted under 35 2011/0223125 A1* 9/2011 Hough ................. A61K 8,8152 424.70.12 U.S.C. 154(b) by 0 days. 2011/0224124 A1* 9, 2011 Fernandez Prieto ... CO7C 237/22 510/405 (21) Appl. No.: 14/106,891 2011/0243873 A1* 10/2011 Hough ..................... A61K 8.91 424.70.16 (22) Filed: Dec. 16, 2013 2011/0256085 A1 * 10/2011 Talingting Pabalan A61 K8/042 424.70.13 (65) Prior PublicationO O Data 2013/0029894 A1 1/2013 Bettiol ................. C11D510,236 3/1266 US 2014/0179591 A1 Jun. 26, 2014 2014/0179591 A1* 6/2014 Fernandez Prieto ..... C11D 3/06 • 1-ys 510,535 (30) Foreign Application Priority Data OTHER PUBLICATIONS Dec. 20, 2012 (EP) ..................................... 121986O1 EP Search Report, EP 12198.601, dated May 16, 2013, containing 6 pageS. (51) Int. Cl. Suzuki M et al: “New 1-valine-based hydrogelators:formation of Supramolecular hydrogels'. Tetrahedron Letters, Elsevier, t t R Ansterdam, NL, vol. 45, No. 28, Jul. 5, 2004 pp. 5399-5402, ( .01) XP004.518889, ISSN: 0040-4039, DOI: 10.1016/J.TETLET2044. CID 7/00 (2006.01) 05.056 p. 5400, left-hand col., line 16—right-hand col., line 33*. CID 3/20 (2006.01) CID 3/32 (2006.01) * cited by examiner CID 3/37 (2006.01) CID 3/06 (2006.01) Primary Examiner — Nicole M Buie-Hatcher CID 3/30 (2006.01) Assistant Examiner — M. Reza Asdjodi CID 7/04 (2006.01) (74) Attorney, Agent, or Firm — Gregory S. (52) U.S. Cl. Darley-Emerson; Leonard W Lewis; Steve W Miller CPC CIID3/046 (2013.01); CIID3/06 (2013.01); CI ID3/2079 (2013.01); CI ID3/2086 (57) ABSTRACT (2013.01); CIID 3/30 (2013.01): CI ID 3/32 The structuring ability of fluid compositions comprising an (2013.01); CIID3/3726 (2013.01): CIID amido-gellant or HEUR polymeric structurant can be 17/003 (2013.01): CIID 17/043 (2013.01) improved with the addition of a cosmotrope. (58) Field of Classification Search CPC .............................. C11D3/046; C11D 3/2079 14 Claims, 1 Drawing Sheet U.S. Patent May 10, 2016 US 9,334,465 B2 s occo ar www.wwwar www.www. lulu Auru. w is Viscoelastie region A. was a Aakaaaaaya YaaaaaaXXYYYasaw YYaxeauxxYxxx8&axYYX |-N arm www.Y.A.N&MNNYNsawaxem meanNassassy --8 m akamerasaara US 9,334,465 B2 1. 2 STRUCTURING USING AN EXTERNAL chloride, tetramethylammonium acetate, tetramethylammo STRUCTURANT AND A COSMOTROPE nium bromide, tetramethylammonium fluoride, tetramethy lammonium formate, tetramethylammonium Sulphate, tet FIELD OF THE INVENTION ramethylammonium bisulphate, tetramethylammonium hydrogensulphate, tetramethylammonium citrate, tetram The present invention relates to the structuring of fluid ethylammonium phosphate, lithium fluoride, lithium chlo compositions using a combination of an external structurant ride, trilithium citrate, lithium acetate, lithium phosphate, and a cosmotrope. lithium formate, lithium Sulphate, caesium fluoride, Caesium chloride, Caesium acetate, caesium phosphate, caesium cit BACKGROUND OF THE INVENTION 10 rate, caesium Sulphate, rubidium acetate, rubidium chloride, rubidium fluoride, rubidium formate, rubidium sulphate, External structurants, useful for providing rheological ben rubidium bromide, and mixtures thereof. efits to fluid compositions, include those derived from poly The present invention also relates to a process of forming mers (both natural and synthetic), castor oil, fatty acids, fatty Such compositions, and the use of a cosmotrope for increasing esters, or fatty soap water-insoluble waxes. However, the 15 the Viscosity of a composition comprising an external struc required performance ingredients often complicate the addi turant selected from the group consisting of an amidogellant, tion of external structurants known in the art and may even be a hydrophobically modified ethoxylated urethane polymeric incompatible with them. For instance, many external struc structurant, and mixtures thereof. turants are degraded by performance ingredients, such as It has been discovered that the fluid compositions of the enzymes. They are also often incompatible with low pH and 20 present invention provide increased viscosity and structuring, peroxide bleaches. In addition, external structurants gener even at lower levels of the external structurant. In addition, ally require the use of structurant premixes incorporating since the cosmotrope can be readily mixed into fluid compo large amounts of water. Such structurant premixes are less sitions having a high viscosity, the compositions of the Suitable for compact detergents and for unit-dose applica present invention can be more easily made, by first combining tions. 25 the external structurant with the fluid composition, and only Amido-gellants and hydrophobically modified ethoxy increasing the Viscosity after adding the cosmotrope. lated urethane (HEUR) polymeric structurants provide struc turing for fluid compositions, while also being compatible BRIEF DESCRIPTION OF THE DRAWINGS with a broad range of potential ingredients, such as bleaches and/or enzymes. They also provide an aesthetically pleasing 30 FIG. 1 details G' and G" within the linear viscoelastic pour profile without negatively impacting the composition region and the oscillation stress at the point where G' and G" clarity. Moreover, they can be formulated into structurant cross over as a measure for gel strength. premixes that are low water, or even entirely water-free. It is desirable to reduce the amount of such external struc DETAILED DESCRIPTION OF THE INVENTION turants, while still providing the desired viscosity and level of 35 structuring. Also, amido gellants and HEUR polymers can be Suitable fluid compositions include, but are not limited to, difficult to mix into a fluid composition, particularly when consumer products such as: products for treating fabrics, such high viscosities are desired. as for laundry detergent compositions, as well as for laundry Therefore, a need remains for a means of achieving the and rinse additives; products for treating hard Surfaces in the desired viscosity, and level of structuring, while using less of 40 area of home care, including dishwashing compositions, floor the external structurant, and also simplifying the process of cleaning compositions, and toilet bowl cleaning composi mixing the external structurant into the fluid composition. tions; and personal care compositions such as shampoos, skin EP2365050 and EP2365052 disclose amido-gellants cleaners and exfolients, shaving liquids (including foams and which are suitable for use in fluid compositions. EP2365051 gels), and oral care (including toothpastes, gels and whitening and EP2365053 disclose fluid detergent compositions com- 45 compositions). prising amido gellants. WO 97/40133 discloses compositions A particularly preferred embodiment of the invention is a comprising HEUR polymers. “fluid detergent composition'. As used herein, “fluid deter gent composition” refers to any composition comprising a SUMMARY OF THE INVENTION fluid capable of wetting and cleaning a Substrate. Such as 50 fabric. Suitable fluid detergent compositions include “fluid The present invention relates to fluid compositions com laundry detergent compositions'. As used herein, “fluid laun prising: an external structurant selected from the group con dry detergent composition” refers to any laundry treatment sisting of an amido gellant, a hydrophobically modified composition comprising a fluid capable of wetting and clean ethoxylated urethane polymeric structurant, and mixtures ing fabric e.g., clothing, in a domestic washing machine. thereof, and a cosmotrope selected from the group consisting 55 The fluid composition can include solids or gases in Suit of calcium fluoride, calcium Sulphate, calcium citrate, cal ably subdivided form, but the overall composition excludes cium formate, calcium hydrogenphosphate, calcium dihydro product forms which are non-fluid overall, such as tablets or genphosphate, tricalcium diphosphate, calcium acetate, granules. The fluid compositions preferably have densities in Sodium fluoride, Sodium acetate, Sodium phosphate, sodium the range from of 0.9 to 1.3 grams per cubic centimeter, more hydrogenphosphate, sodium dihydrogenphosphate, potas- 60 preferably from 1.00 to 1.10 grams per cubic centimeter, sium formate, tripotassium citrate, potassium chloride, potas excluding any Solid additives but including any bubbles, if sium fluoride, potassium
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