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(12) United States Patent (10) Patent No.: US 7,378,382 B2 Serobian Et Al

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(12) United States Patent (10) Patent No.: US 7,378,382 B2 Serobian Et Al USOO7378382B2 (12) United States Patent (10) Patent No.: US 7,378,382 B2 Serobian et al. (45) Date of Patent: May 27, 2008 (54) RHEOLOGICALLY STABILIZED SILICONE 5,543,074 A * 8/1996 Hague et al. ............... 510,122 DISPERSIONS COMPRISING A 5,554.313 A * 9/1996 Chandler ....... ... 510,121 POLYDIMETHYLSILOXANE MIXTURE 5,645,751 A * 7/1997 Haley ........ ... 252.8.91 5,753,607 A * 5/1998 Burke et al. ... ... 510,242 75 5,824,723 A * 10/1998 Yano et al. ....... ... 524,262 (75) Inventors: to repaign 5,866,532 A * 2/1999 Jackson et al. ............. 510/466 turqozo leasanton, 5,977,038 A * 11/1999 Birtwistle et al. ... 510,122 CA (US); Danielle J. Coutts, 6,114.299 A 9/2000 Hunter et al. ......... ... 510,466 Pleasanton, CA (US); Daniela N. 6,117,830 A * 9/2000 Yokosuka et al. .......... 510/242 Fritter, Pleasanton, CA (US); Adam F. 6,165,479 A 12/2000 Wheeler ........... ... 424/400 Gross, Pleasanton, CA (US); Mona 6,221,433 B1 4/2001 Muntz et al. ..... ... 427,387 Marie Knock, Pleasanton, CA (US); 6,221,833 B1 * 4/2001 Colurciello, Jr. .. ... 510,466 Frederick R Van Wort, III, 6,277.360 B1* 8/2001 Carew et al. ............ 424.70.12 Pleasanton, CA (US); Tarric M 6,506,715 B1* 1/2003 Schultz et al. .............. 510,189 s s 6,583,103 B1* 6/2003 Klinkhammer ............. 510/478 El-Sayed, Pleasanton, CA (US) 6,616,934 B1 9/2003 Hill et al. ............. ... 424/401 rsr rr 6,656,975 B1 12/2003 Christiano et al. ............ 516, 22 (73) Assignee: The Clorox Company, Oakland, CA 6,759,377 B2 * 7/2004 Hackenthal et al. ........ 51Of 197 (US) 6,809,145 B1 * 10/2004 Okamura et al. ........... 524,497 c - 0 6,827,795 B1* 12/2004 Kasturi et al. ................ 134/42 (*) Notice: Subject to any disclaimer, the term of this 6,881,757 B2 * 4/2005 Moodycliffe et al. .......... 516.6 patent is extended or adjusted under 35 6,930,080 B2 * 8/2005 Moodycliffe et al. ....... 510,295 U.S.C. 154(b) by 344 days. 2002/0001605 A1 1/2002 Carew et al. ......... ... 424/405 2003/0022799 A1 1/2003 Alvarado et al. ........... 510/119 (21) Appl. No.: 10/840,477 2003/011097.6 A1 6/2003 Adibh et al. ................... 106.2 2003/01 19917 A1 6/2003 Fey et al. ..................... 516.13 (22) Filed: May 5, 2004 2003.0143179 A1* 7, 2003 Cao et al. ......... ... 424.70.13 2004/0016364 A1 1/2004 Legrow et al. ................ 106.2 (65) Prior Publication Data 2005, 0164898 A1* 7/2005 Kasturi et al. .............. 510,237 US 2005/0250668 A1 Nov. 10, 2005 FOREIGN PATENT DOCUMENTS CA 1176828 10, 1984 (51) Int. Cl. k . CLID 9/36 (2006.01) cited by examiner CLID 3/37 (2006.01) Primary Examiner Charles I Boyer (52) U.S. Cl. ...................... 510/466; 510/243; 510/244: (74) Attorney, Agent, or Firm—Erin Collins 510/245; 510/275; 510/417. 510/434; 510/477 (58) Field of Classification Search ................ 510/243, (57) ABSTRACT 510/244, 245, 275,417,434, 466,477 See application file for complete search history. Aqueous dispersions of silicone oils are prepared without the need for Surfactants, solvents, hydrotropes or emulsifiers (56) References Cited by employing water soluble and/or water dispersible poly U.S. PATENT DOCUMENTS CS providing inventive compositions which exhibit a rheological Critical Strain value greater than Zero and less 3,462.384 A * 8, 1969 Kokoszka et al. ..... 106,287.14 than about 0.5. Disclosed according to the present invention 3,720,538 A 3/1973 Bergmeister et al. ......... 117/72 are compositions and methods of use of the aqueous dis 3,929,492 A * 12/1975 Chapman et al. .............. 106.3 persions of silicone fluids for cleaning, preserving, protect 4,023,978 A 5, 1977 Messina ......... ... 106,211.1 ing, and otherwise treating a variety of Surfaces, including 4,347,151 A 8, 1982 Lohr et al. .................. 510,398 household Surfaces, such as floors, counter tops, furniture, 3. 3. A ck 3.E. SE, r 42... g walls, and automotive surfaces, Such as tires, rubber, vinyl, 5,236,624 A 8/1993 Lepert et al. ............... 252,314 upholstery, fabric, plastic and general elastomer Surfaces. 5,254,284 A * 10/1993 Barone et al. .............. 510, 181 5.433,890 A 7, 1995 Meyer et al. ............... 252.309 24 Claims, 1 Drawing Sheet U.S. Patent May 27, 2008 US 7,378,382 B2 O V O y X V OC X { CSV E N X SpO 5 isC V O X L C) s O i c Vm O O O O O O qm v. S O V vu (Seosed) so SnInpow 9Sel US 7,378,382 B2 1. 2 RHEOLOGICALLY STABILIZED SILICONE since the Surfactant employed is advantageously selected for DISPERSIONS COMPRISING A its emulsifying capability rather than another benefit Such as POLYDIMETHYLSILOXANE MIXTURE for wetting or cleaning purposes. Surfactant based silicone emulsions used in Surface treatment applications thus tend to BACKGROUND OF THE INVENTION suffer from undesirable characteristics, such as reduced shine, reduced coating longevity, increased susceptibility to 1. Field of the Invention hydration by water and/or high humidity, susceptibility to This invention relates generally to aqueous dispersions of rinse-off by water, increased stickiness to the treated surface silicone oils prepared using water Soluble and/or water leading to dust pickup, retention offingerprints and the like, dispersible polymers providing inventive compositions 10 owing to the Surfactant employed as emulsifier. which exhibit a rheological Critical Strain value greater than Alternative approaches in the art for emulsifying silicone Zero and less than about 0.5. Aqueous dispersions of silicone oils include the use of Solvents and hydrotropes, alone and oils are prepared without the need for Surfactants, solvents, in combination with emulsifying Surfactants, in order to hydrotropes or emulsifiers by employing water soluble and/ achieve emulsification of the silicones. Solvents are not or water dispersible polymers providing inventive compo 15 without their own issues, for instance those that fall in the sitions which exhibit a rheological Critical Strain value class of Volatile organic compounds, are Subject to ever greater than Zero and less than about 0.5. Disclosed accord increasing regulatory compliance issues. While Volatile sol ing to the present invention are compositions and methods of vents evaporate after application, the resulting films suffer use of the aqueous dispersions of silicone fluids for cleaning, less from the detrimental effects of the correspondingly preserving, protecting, and otherwise treating a variety of reduced or replaced surfactant emulsifiers present. However, Surfaces, including household Surfaces, such as floors, in general Solvents are often flammable, aggressive to the counter tops, furniture, walls, and automotive Surfaces, such Substrates to which the silicone compositions are applied, as tires, rubber, vinyl, upholstery, fabric, plastic and general require special packaging and handling requirements, and elastomer Surfaces. Disclosed according to the present limit formulation options such as including other beneficial invention are compositions and methods of use of the 25 ingredients to the compositions that are not solvent compat aqueous dispersions of silicone fluids prepared using water ible. Generally, high solvent and/or hydrotrope level and soluble and/or water dispersible polymers providing inven Solvents and hydrotropes capable of coupling the silicone oil tive compositions which exhibit a rheological Critical Strain to water are required, with similar issues to the emulsifying value greater than Zero and less than about 0.5 and an Elastic Surfactants as described above owing to their incorporation Modulus value greater than Zero and less than about 400 30 into the resulting silicone film deposited onto the treated Pascals. Surface. 2. Description of the Related Art Further, the emulsions formed in prior practice achieve a A typical approach in the art for producing stable com high degree of Stability with regards to storage conditions, positions containing silicones is by forming an emulsified temperature and time typically required for practical use. phase or emulsion of the silicone oil in water through the use 35 However, the inherent stability of these emulsions can result of emulsifying agents such as Surfactants, solvents, hydro in lowered performance owing to the inability of the emul tropes and their respective mixtures combined with high sions to break, that is to release the emulsified silicone oils, shear mixing conditions to obtain a particle size of the at time of use so that the silicone oils are available to coat silicone oil Small enough for reasonable storage stability and the intended target surface or substrate. It is desirable to coat preventing gross separation of the silicone oil droplets 40 or treat the surface with a layer of essentially pure silicone resulting in formation of a separate silicone phase. Current oil, or alternatively with silicone oil without significant or equipment and procedures are only able to reduce the otherwise detrimental levels of emulsifying agents, rather average particle size to about 3-10 microns in Surfactant than to provide a coating or layer of emulsified silicone oil based emulsions, and inherent to high shear processing is the with extraneous components present that not only do not potential degradation of other additives, particularly longer 45 contribute to the desired protective benefits, but may detract chain polymers, and contribution to localized heating effects from these protective benefits. during processing that can further degrade heat-sensitive To over come some of the negative effects of the emul ingredients, such as fragrances, preservatives and the like. sifiers commonly employed, higher levels of the silicone oils Further, high shear mixing processes bring the introduction are typically required for the formulations to exhibit the of unwanted air into the formulation, creating changes in 50 desired preserving, protecting and aesthetic benefits to density and leading to problems with reproducibility of the treated Surfaces Such as those disclosed herein.
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