Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2001-12-17
2003-08-12
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S119000, C510S276000, C510S287000, C510S308000, C510S466000, C510S515000
Reexamination Certificate
active
06605577
ABSTRACT:
BACKGROUND OF THE INVENTION
The concept of cleansing and conditioning detersive products has drawn great attention since its launch in the early 1980's. From a technical point, cleansing and conditioning are contradictions, since conditioning has to deposit some ingredients on an object and cleansing has to remove the deposited ingredients from the object. To combine cleansing and conditioning in detersive products means when the product removes the dirt from the object, the product also simultaneously deposits some conditioning ingredients on the object. The conditioning effects depend on the equilibrium between the removed dirt, conditioning ingredient and deposit conditioning ingredients. For hair products, conditioning involves depositing certain agents onto the hair to give it the protection, softness, shine and detangling effects. Less deposition means less conditioning and more deposition means more conditioning or over conditioning.
To achieve proper conditioning formulations, chemists are faced with the challenge of choosing the appropriate conditioning ingredients, the proper ratio of conditioning ingredients to surfactants and methods of incorporating conditioning ingredients into the detersive system to form stable products.
A conditioning ingredient should have the basic characteristic of being water-insoluble, easy to be spread and have some affinities with the application objects. Polysiloxane, such as dimethicone, and derivatives are water-insoluble and are widely used conditioning ingredients. Furthermore, polysiloxanes usually give good hair protection, softening, shine and detangling effects.
The various technical methods for incorporating polysiloxanes, such as dimethicone, into the detersive products have been patented. The focus is on the particle size distribution of dimethicone surfactant emulsion and stability of the shampoo. Smaller particle size means more stability and more deposition to the targeted object.
Although some success has been achieved in being able to incorporate polysiloxanes, such as dimethicones, into detersive compositions, other challenges still remain. It remains a challenge to be able to formulate a stable conditioning/detersive composition, especially when a polysiloxane (e.g. dimethicone) is employed. Considering the regular viscosity of the detersive composition and the relatively lightweight of the conditioning ingredients, it is very difficult to achieve a long-term stability of the products. For example, the products tend to separate with the conditioning ingredients settling on top of the water-detergent solution. Furthermore, it remains a challenge to be able to formulate a clear stable conditioning/detersive composition, especially when the conditioning ingredient is a polysiloxane.
There continues to be a need to have a more stable formulation having a conditioner and a detersive composition. In particular, there is a need to have a clear detersive formulation which comprises a polysiloxane.
SUMMARY OF THE INVENTION
The present invention meets this need and provides for a stable, clear detersive composition having a polysiloxane component. In one embodiment, the present invention provides for a clear detersive composition comprising a conditioner. A clear conditioning/detersive composition includes, for example, a conditioning shampoo which is substantially clear.
The term “clear” as used herein means a substantial amount of light may pass through. Alternatively, the term “clear” means transparent or translucent, as opposed to opaque.
In accordance with the invention, a composition comprising an emulsifier component and a polysiloxane component is provided. The polysiloxane component comprises at least one side chain component A having the general formula:
R1 is an H, OH or a C1-C5 hydrocarbon; X is a C1-C10 hydrocarbon, a heteroatom or
Z is a heteroatom and d is 0 to about 6.
Further in accordance with the present invention, the composition further comprises a detersive component. For example, the composition comprises about 5% to about 60% of the detersive component, about 0.01% to about 10% of the emulsifier component, and about 0.01% to about 10% of the polysiloxane component.
Still further in accordance with the present invention, a method of making a clear shampoo is provided. The method comprises the steps of forming a micro-emulsion of a polysiloxane component, and combining the micro-emulsion with a detersive component. The micro-emulsion is formed by combining a non-ionic emulsifier with a polysiloxane component.
Any feature or combination of features described herein are included within the scope of the present invention provided that the features included in any such combination are not mutually inconsistent as will be apparent from the context, this specification, and the knowledge of one of ordinary skill in the art.
Additional advantages and aspects of the present invention are apparent in the following detailed description and claims.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is, in part, based upon the surprising discovery that a polysiloxane component may be combined with a detersive component to form a clear composition, preferably a clear shampoo. In a broad embodiment, the composition comprises an emulsifier component and a polysiloxane component.
Without wishing to limit the invention to any theory or mechanism of operation, it is believed that a clear composition, for example a clear shampoo composition, may be produced by combining a detersive component with preformed micro emulsion comprising a polysiloxane component. The micro emulsions may or may not remain intact after it is combined with a detersive component.
In one embodiment, a composition of the present invention remains stable (for example remain clear) for about 360 days after manufacturing.
In one embodiment, the micro emulsions are formed by mixing the emulsifier components with the polysiloxane components, preferably in the presence of water. For example, micro emulsions are formed by homogenizing emulsifier components with polysiloxane components in a tank at about 40 to about 70 degrees C. In one embodiment, a homogenizer employed is model number ME 100 LC by Charles Ross and Son, Hauppauga, N.Y. In one embodiment, the ratio (by weight) of the emulsifier component to the polysiloxane component in a micro emulsion is about 1:1, 1:2, 1:3, or 1:4.
In one embodiment, emulsifier components include a non-ionic emulsifier. In another embodiment, the emulsifier components include a non-ionic emulsifier and at least one of an anionic emulsifier and an amphoteric emulsifier. The anionic amphoteric emulsifiers are selected from the anionic and amphoteric surfactants, respectively.
Non-limiting examples of non-ionic surfactants include: Capryleth-n, where n=4, 5; Deceth-n, where n=3, 4, 5, 6, 8, 9, 10; Undeceth-n, where n=3, 5, 7, 8, 9, 11; Coceth-n, where n=3, 5, 7, 8, 10; C9-11 Pareth-n, where n=5, 6, 8; C9-15 Pareth-8; C11-15 Pareth-n, where n=3, 5, 9, 12, 15, 20, 30, 40; C11-21-Pareth-n, where n=3, 10; C12−1−n, where n=3, 5, 7, 9, 12; C12-14 Pareth-n, where n=5, 7, 9, 12; C12-15 Pareth-n, where n=2, 3, 4, 5, 7, 9, 10, 11, 12; C12-16 Pareth-n, where n=5, 7, 9; C14-15 Pareth-n, where n=4, 7, 8, 11, 12, 13; C20-22 Pareth-30; C20-40 Pareth-n, where n=3, 10, 24, 40; C22-24 Pareth-33; C30-50 Pareth-n, where n=3, 10, 40; C40-60 Pareth-n, where n=3, 10; C12-14 Sec-Pareth-5; C12-14 Sec-Pareth-n, where n=8, 9, 15, 20, 30, 40, 50; C11-15 Sec-Pareth-12; Dihydrocholeth-n, n=15, 20, 30; Glycereth-n, where n=7, 12, 20, 26, 31; Hydrogenated Talloweth-n, where n=12, 25; Isoceteth-n, where n=10, 15, 20, 30; Isodeceth-n, where n=4, 5, 6; Isolaureth-n, where n=3, 6, 10; Isosteareth-n, where n=2, 3, 10, 12, 20, 22, 25, 50; Laneth-n, where n=5, 10, 15, 16, 20, 25, 40, 50, 60, 75; Laureth-n, where n=1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
Harrison James Jeffries
Harrison Nohemi
Parr James
Sun Zimming
Boyer Charles
Chemsil Silicones, Inc.
Stout, Uxa Buyan & Mullins, LLP
Uxa Frank J.
Yesland Kyle D.
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