Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
2000-06-23
2001-06-19
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S070150, C424S070170, C424S070190, C424S070220, C424S070310, C510S119000, C514S881000
Reexamination Certificate
active
06248315
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to hair shampoo compositions which provide cleaning and styling benefits. These are achieved by incorporating dispersed latex polymer particles, cationic polymer and organic oil into shampoo compositions.
BACKGROUND OF THE INVENTION
Many hair shampoo compositions provide acceptable cleaning but provide little or no styling benefits, e.g. body, hold, stiffness. To realize such benefits, separate cleaning and styling products are often used.
Recently, hair shampoo compositions have been developed which can provide cleaning performance with some styling benefits, all from a single product. Many of these products contain styling polymers in a compatible shampoo base. To prepare such products. styling polymers can be dissolved in an organic solvent and then incorporated into the shampoo base. The organic solvent thereafter helps disperse the styling polymer in the shampoo composition, and also helps enhance deposition of the styling polymer onto hair. The use of these solvents, however, can sometimes contribute undesirable odors to the finished product or otherwise present formulation problems, e.g. compatibility with other materials in the shampoo composition.
To minimize the use of these organic solvents, latex polymers rather than dissolved polymers have been employed as a means of incorporating styling polymers into a shampoo base. Latex polymer systems are stable dispersions, typically colloidal dispersions, of water-insoluble polymer particles in a continuous aqueous phase. As such, there is little or no organic solvent to contribute undesirable odors or to otherwise present incompatibilities with other materials in the shampoo composition. Without the organic solvent, however, deposition of the latex particles onto hair, which is essential for allowing the styling polymer to set and form a film onto the surface of hair, is reduced. Attempts at improving latex deposition included adding latex deposition aids, e.g., cationic polymers, and/or by increasing the shampoo concentration of the latex polymer.
The foregoing considerations involving styling shampoo compositions and latex polymer systems indicates that there is a continuing need to identify latex polymer shampoos with enhanced latex deposition profiles and styling performance. Accordingly, it is an object of the present invention to provide such compositions, and further to provide such compositions that require minimal or reduced levels of latex polymer to achieve the desired latex deposition profile and styling performance.
SUMMARY OF THE INVENTION
The present invention is directed to hair shampoo compositions which provide cleaning and styling benefits. Compositions of this type comprise dispersed latex polymer particles, cationic polymer and organic oil, wherein the organic oil is present in an amount effective to enhance deposition of the latex particles onto hair. The shampoo compositions will generally be in the form of pourable liquids under ambient conditions and contain one or more compatible surfactants, an aqueous carrier, and one or more other optional materials.
DETAILED DESCRIPTION OF THE INVENTION
“Soluble” and “insoluble” used in reference to particular ingredients of the shampoo compositions refer to solubility or insolubility, respectively, of that ingredient in the shampoo composition of the present invention, unless otherwise specifically indicated. For example the terms “water soluble” and “water insoluble”, as used herein, refer to solubility of the particular ingredient in water, as opposed to solubility in the shampoo composition.
All percentages, parts and ratios are based on weight unless otherwise specified.
“Water soluble” refers to any material that is sufficiently soluble in water (distilled or equivalent) at 25° C. to form a substantially clear solution containing at least about 0.1% by weight of the material.
“Water insoluble” refers to any material that is not water soluble as defined herein.
“Ambient conditions” refer to air temperatures of about 25° C. under about 1 atm of pressure.
“Comprising” means various components can be conjointly employed in the shampoo compositions of the present invention. “Consisting essentially of” and “consisting of” are embodied in the term “comprising.”
Surfactant
The shampoo compositions of the present invention typically contain one or more synthetic surfactants, which surfactants are physically and chemically compatible with the essential components of the shampoo compositions, or do not otherwise unduly impair cleaning and/or styling performance.
Synthetic surfactants for use in the shampoo compositions can be categorized as anionic, nonionic, cationic, zwitterionic or amphoteric, and will generally be present at a level from about 0.5% to about 50%, more typically from about 4% to about 30%, more typically from about 5% to about 25%, by weight, of the shampoo composition. Total surfactant concentrations in the shampoo compositions can vary depending on the shampoo base formulation, the selected surfactant, cosurfactants, product results desired and so forth.
Anionic surfactants for use in the shampoo compositions include alkyl and alkyl ether sulfates. These materials have the respective formulae ROSO
3
M and RO(C
2
H
4
O)
x
SO
3
M, wherein R is alkyl or alkenyl of from about 8 to about 24 carbon atoms, x is 1 to 10, and M is a water-soluble cation such as ammonium, sodium, potassium and triethanolamine. The alkyl ether sulfates are typically made as condensation products of ethylene oxide and monohydric alcohol's having from about 8 to about 24 carbon atoms. Preferably, R has from about 10 to about 18 carbon atoms in both the alkyl and alkyl ether sulfates. The alcohol's can be derived from fats, e.g., coconut oil or tallow, or can be synthetic. Lauryl alcohol and straight chain alcohol's derived from coconut oil are preferred herein. Such alcohol's are reacted with about 1 to about 10, preferably from about 2 to about 5, especially about 3, molar proportions of ethylene oxide and the resulting mixture of molecular species having, for example, an average of 3 moles of ethylene oxide per mole of alcohol, is sulfated and neutralized.
Specific examples of alkyl ether sulfates which may be used in the shampoo compositions are sodium and ammonium salts of coconut alkyl triethylene glycol ether sulfate; tallow alkyl triethylene glycol ether sulfate, and tallow alkyl hexaoxyethylene sulfate. Highly preferred alkyl ether sulfates are those comprising a mixture of individual compounds, said mixture having an average alkyl chain length of from about 10 to about 16 carbon atoms and an average degree of ethoxylation of from about I to about 4 moles of ethylene oxide.
Another class of anionic surfactants suitable for use in the shampoo compositions are the water-soluble salts of the organic, sulfuric acid reaction products of the general formula [R
1
—SO
3
—M] wherein R
1
is chosen from the group consisting of a straight or branched chain, saturated aliphatic hydrocarbon radical having from about 8 to about 24, preferably about 10 to about 18, carbon atoms; and M is a cation. Important examples are the salts of an organic sulfuric acid reaction product of a hydrocarbon of the methane series, including iso-, neo-, ineso-, and n-paraffins, having about 8 to about 24 carbon atoms, preferably about 10 to about 18 carbon atoms and a sulfonating agent, e.g., SO
3
, H
2
SO
4
, oleum, obtained according to known sulfonation methods, including bleaching and hydrolysis. Preferred are alkali metal and ammonium sulfonated C
10-18
n-paraffins.
Additional examples of anionic surfactants suitable for use in the shampoo compositions are the reaction products of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide where, for example, the fatty acids are derived from coconut oil; sodium or potassium salts of fatty acid amides of methyl tauride in which the fatty acids, for example, are derived from coconut oil. Other suitable anionic surfactants of this variety are
Snyder Michael Albert
Young Sharon Ann
Page Thurman K.
Seidleck Brian K.
Sivik Linda M.
The Procter & Gamble & Company
Winter William J.
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