Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
1999-05-14
2001-04-03
Fries, Kery (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S392000, C510S136000, C510S466000, C424S070110, C424S070120
Reexamination Certificate
active
06211125
ABSTRACT:
BACKGROUND OF INVENTION AND PRIOR ART
There is sufficient evidence both from both consumer and clinical testing that the use of heat styling appliances is damaging to human hair.
For consumers that heat style, their primary concern is to use a shampoo or conditioner treatment that can protect and improve the condition of their hair. Shampoos and conditioners containing silicone conditioning agents are able to deliver these benefits by 1) coating the hair with a conforming layer of silicone that smoothes the hair's imperfections such as roughness, cracks, cuticle uplift, or cuticle removal, and, 2) helping to protect the hair from extreme internal water loss with heat. As a result of coating the hair with conditioning agents, shampoo and conditioner treatments often impart increased softness, better combing characteristics, luster, and in general, improve the appearance of one's hair.
The claimed invention not only protects the hair from the damaging action of heat, but in addition, uses heat to mediate increased conditioning or softness dependent on the delivery and deposition of conditioning agent between certain known levels.
SUMMARY OF THE INVENTION
The invention is the use of silicone based conditioning agents in shampoos, conditioners or the like, to elicit a heat—mediated reduction in bending modulus, or softening, or conditioning to hair, as compared to air dried, treated hair. The heat required to elicit the effect would be the heat exposure of a blow dryer or styling appliance, measured at point of origin of the appliance to be typically between 200° F. to 400° F.
In brief, the present invention is directed to a method for thermal conditioning hair which comprises:
(a) applying to hair a rinse-off composition comprising:
(1) a nonvolatile, silicone conditioning agent; and
(2) a carrier;
(b) rinsing the composition from the hair with water;
(c) applying heat via a heating appliance to the composition treated hair to dry or style the hair and wherein a reduction in the bending modulus caused by the silicone conditioning agent is at least 1.00%, and wherein the method of the invention results in the deposition on the hair of at least 30 ug silicone/1 g of hair.
DETAILED DESCRIPTION OF THE INVENTION
As used herein nonvolatile, silicone conditioning agent means any silicone having a boiling point of 200° C. or greater, typically this would include silicones within a broad range of molecular weight, and having viscosities of between about 5 centistokes to 1 million centistokes.
As used herein, SLES means sodium lauryl ether sulfate.
As used herein, heating device means heating appliance.
As used herein, % means weight % unless otherwise indicated.
Heat activation is defined as some change that is mediated by use of the composition of the invention with heat, from styling appliances such as a blow dryer, curling iron, hot curler, hot brush, hot comb, hot rollers, crimper, or hair dryer. From internal testing of various appliances this average temperature can range on the “hot” setting to be 200° to 400° F.
Any nonvolatile silicone conditioning agent which will deposit silicone on hair may be used in the compositions and methods of the present invention. Silicone agents in the compositions of the present invention include dimethicone, dimethiconol, phenyl trimethicone, dimethicone copolyols, amino functional silicones, organically modified silicone resins such as stearyl siloxysilicate and lauric siloxysilicate, silicone gums, silicone elastomers, and crosslinked siloxane polymers which may be either linear or branched.
Silicone conditioning agents are responsible for a heat-induced reduction in bending modulus or softening of the hair. The preferred non-volatile silicone conditioning agents are dimethiconol, dimethicone, amodimethicone which are added to a composition of the present invention in an amount sufficient to provide improved combing and improved feel (softness) to the hair after shampooing.
Preferred silicones include linear and branched polydimethylsiloxanes, of the following general formula:(CH
3
)
3
SiO—[Si(CH
3
)
2
O]
n
—Si(CH
3
)
3
, wherein n is from about 7 to about 15,000, preferably from about 7 to about 9,000. Silicones useful in compositions of the present invention are available from a variety of commercial sources, including General Electric Company and Dow Corning. In addition to the linear and branched polydimethylsiloxanes, the polydimethylsiloxanes can be organically modified to include amine, hydroxyl, alkyl, alkyl aryl, ethoxylated, and propoxylated functionalities.
In accordance with one important embodiment, the composition of the present invention also includes from about 0.1% to about 10%, particularly about 0.5% to about 10%, and preferably from about 1.0% to about 5.0%, by weight of a nonvolatile silicone compound or other conditioning agent(s), preferably a water-insoluble, emulsifiable conditioning agent. Any nonvolatile silicone agent will work in the compositions and methods of the invention provided that the silicone agent deposits silicone onto the hair.
Using compositions and methods of the invention, wherein the nonvolatile, silicone conditioning agent was present in the compositions at an active range of about 0.1 to about 2.0%, depositing on hair in the range of about 30 ug/g to about 1200 ug/g hair. In these just above mentioned compositions, the nonvolatile, silicone conditioning agents were as follows:
Dimethiconol containing silicone emulsions such as, Dimethiconol (and) TEA-Dodecylbenzenesulfonate (and) Polyethylene Oxide Laurel Ether. Non-emulsion forms of silicone conditioning agents include dimethicone; and amodimethicone.
The surface active agent can be anionic, cationic, nonionic, zwitterionic or amphoteric. Typically useful surface active agents contain at least one fatty, carbon atom, chain. The individual surface active agents can also be used in mixtures of two or more surface active agents or their salts.
Exemplary anionic surface active agents include but are not limited to alkali metal and ammonium salts of fatty alkyl sulfates and fatty alpha-olefin sulfonates such as ammonium lauryl sulfate and the sodium alpha-olefin sulfonate prepared from mixed olefins having about 12 to 18 carbon atoms in the fatty chain, alkali metal and ammonium soaps such as potassium oleate and ammonium palmitate, alkali metal ethoxylated fatty alkanol sulfates and phosphates such as sodium polyoxyethylene myristyl sulfate and potassium polyoxyethylene lauryl phosphate in which there are an average of 1 to about 4 oxyethylene units per molecule, and the like.
Exemplary nonionic surface active agents include but are not limited to polyoxyethylene derivatives of fatty alcohols containing about 4 to about 25 oxyethylene units per molecule such as polyoxyethylene (20) cetyl ether and polyoxyethylene (4) lauryl ether, polyoxyethylene derivatives of octyl- and nonylphenols containing an average of about 4 to about 25 oxyethylene units such as polyoxyethylene (9) octylphenyl ether and polyoxyethylene (15) nonylphenyl ether, mono- and dialkanol amides of fatty acids such as N-(2-hydroxyethyl) tallow acid amide and N,N-bis-(2-hydroxyethyl) coco fatty acid amide, and the like.
Exemplary cationic surface active agents include but are not limited to quaternary nitrogen-containing compounds that include the following structures: (1) one fatty chain and three lower alkyl (one to four carbon atoms) substituents on the quaternary nitrogen such as stearyltrimethylammonium chloride and cetyldimethylethylammonium bromide; (2) one fatty chain, two lower alkyl groups and a benzyl group such as cetylidimethylbenzylammonium bromide; (3) two fatty chains and two lower alkyl groups such as dimethyldi-(hydrogenated tallow)-ammonium chloride; (4) three fatty chains and one lower alkyl group such as tricetylmethylammonium chloride; and the like.
Exemplary zwitterionic surface active agents include but are not limited to betaine and sultaine derivatives such as stearyldimethylglycine, cocamidopropyldimethylglycine, cocamidopropyldimethyl sultai
Bergmann Wolfgang
Crudele Joanne
Kamis Kimberly
Milczarek Pawel
Shah Varsha
Boxer Matthew
Fries Kery
Helene Curtis Inc.
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