Hair care compositions which provide hair body and which...

Details Hair care compositions which provide hair body and which... Hair care compositions which provide hair body and which...

1998-06-05

2002-08-13

Page, Thurman K. (Department: 1615)

Drug, bio-affecting and body treating compositions

Live hair or scalp treating compositions

C424S401000, C424S070120, C514S063000

Reexamination Certificate

active

06432393

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention is directed to hair care compositions which supply body to the treated hair without giving up conditioning attributes. More particularly, the present invention is directed to hair care compositions and a method for treating hair which supply body to the treated hair without giving up conditioning attributes. In the past, it has been difficult to achieve good hair body from a hair treatment composition without giving up conditioning attributes. Moreover, while styling would ordinarily be considered a measure of hair body, prior art compositions have failed to deliver good styling attributes. The present invention overcomes these deficiencies. Other products in the market give either body or conditioning. The present invention gives both body and conditioning.
U.S. Pat. No. 4,902,299 to Bolich et al. teaches styling benefits, which may not provide the combination of body and conditioning, from rigid silicone polymers having complex viscosities greater than 10
7
poise when delivered from a rinse-off product (shampoo or conditioner). They also require a volatile carrier which is typically a linear or cyclic silicone or hydrocarbon. This volatile carrier exhibits a solubility in water of less than 0.1% and is present at a level between 0.1 and 99.9% However, we have measured the complex modulus of the SR-545 material described in the patent and determined that at 5.28×10
−2
dynes/cm
2
it is four orders of magnitude lower than the materials in our invention.
U.S. Pat. No. 4,842,850 to Vu teaches styling benefits from a rigid silicone polymer contained in a shampoo. He also claims a volatile silicone carrier at a range from 1-10% of the total composition.
PCT/EP96/01462 Birtwistle et al., which is hereby incorporated by reference, teaches a hair care composition containing a non-rigid emulsion polymerized cross linked conditioning agent having a viscosity between 10
6
-10
9
cts.
SUMMARY OF THE INVENTION
The present invention is directed to hair care compositions which supply body to the treated hair without giving up conditioning attributes. More particularly, the present invention is directed to hair care compositions and a method for treating hair which supply body to the treated hair without giving up conditioning attributes. In the past, it has been difficult to achieve good hair body from a hair treatment composition without giving up conditioning attributes. Moreover, while styling would ordinarily be considered a measure of hair body, prior art compositions have failed to deliver good styling attributes. The present invention overcomes these deficiencies.
More specifically, this invention relates to aqueous or non-aqueous hair care compositions including conditioners, shampoos, and mousses. Conditioners include rinse-off and leave-in conditioners. The invention also relates to methods of treating hair, and more particularly to treating hair with aqueous hair care compositions which contain one or more elastomeric resinous materials. These materials when tested at the same concentration that would be incorporated into a product exhibit a G′ modulus between 1×10
2
and 1×10
5
dynes cm
2
. Furthermore these resins when mixed with a hydrophilic or hydrophobic diluent at a ratio of 1:95 to 95:1% and this mixture then incorporated into an aqueous emulsion in the range of 0.1 to 10% have been demonstrated to deliver a consumer perceptible increase in hair body without sacrificing conditioning attributes.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to aqueous and non-aqueous hair care compositions including for example, conditioners, shampoos, hair sprays and mousses. Conditioners include rinse-off and leave-in conditioners. The invention also relates to methods of treating hair, and more particularly to treating hair with aqueous hair care compositions which contain one or more elastomeric resinous materials. As noted above, these elastomeric materials when tested at the same concentration that would be incorporated into a product exhibit a G′ modulus between 1×10
2
and 1×10
5
dynes/cm
2
. Furthermore these resins when mixed with a hydrophilic or hydrophobic diluent at a ratio of 1:95 to 95:1% and this mixture then incorporated into an aqueous emulsion in the range of 0.1 to 10% have been demonstrated to deliver a consumer perceptible increase in hair body without sacrificing conditioning attributes.
Previous work has demonstrated that silicone resins of high viscosity 10
5
-10
9
poise are required to yield styling benefits from a rinse off product (Bolich et al., Birtwistle et al. and Vu). All of our previous work indicates that styling is an important component of body in the consumers' mind. Thus, one would expect that a material that is capable of delivering styling would also deliver body. However, we have found that not all resins in the 10
5
-10
9
poise range are capable of delivering on consumer perceptible body. Additionally, resins that fall well below the 10
5
-10
9
poise range also deliver on body. What we have found, unexpectedly, is that it is not the viscosity of the neat resin that determines if it will deliver body. What is important is the viscosity of the resin when mixed with a hydrophilic or hydrophobic diluent that is then incorporated into the final formulation.
The one or more elastomeric resinous materials that can be included in our compositions are any elastomers that have the G′ and G″ measurements set forth in this specification. These elastomers include non-silicone elastomers or more preferably cross-linked or uncross-linked silicone elastomers.
Moreover, the degree of crosslinking of silicone elastomers affects their performance in the compositions of the invention. Preferred silicone elastomers for ;use in the invention are polydiorganosiloxanes, preferably derived from suitable combinations of R
3
SiO
0.5
units and R
2
SiO units where each R independently represents an alkyl, alkenyl (e.g. vinyl), alkaryl, aralkyl, or aryl (e.g. phenyl) group. R is most preferably methyl.
The preferred crosslinked silicone elastomers of the invention are cross-linked polydimethyl siloxanes (which have the CTFA designation dimethicone), optionally having end groups such as hydroxyl or methyl.
One preferred elastomer of the invention is DC 2-9040.
DC 2-9040 Cross-linking Chemistry is as follows.
The cross linker used in the DC 2-9040 is an alpha, omega aliphatic diene of the following structure: CH
2
═CH(CH
2
)
x
CH═CH
2
, where X ranges from 1-20. A gel is formed by crosslinking and addition of Si—H across double bonds in the alpha, omega-diene. The following Dow Corning patent describes the DC 2-9040: U.S. Pat. No. 5,654,362. This just mentioned U.S. patent is hereby incorporated by reference.
Another preferred elastomer of the invention is DC 3-2365.
The structure of the cross-linker used in DC 3-2365 is given below:
Another preferred elastomer of the invention is Silicone/Urethane Copolymer.
The structure of the urethane cross-linker is given below:
The tradename for the silicone-urethane copolymer is Polyderm PPI-SI-100. The supplier is Alzo Incorporated, Matawan, N.J.
The degree of crosslinking of the silicone elastomers is suitably from about 0.05% to about 35%, preferably being in the range of about 0.15% to about 7%, e.g. from about 0.2 to about 2%.
Suitable emulsion polymerized cross-linked silicone elastomers are commercially available or can be readily made using conventional techniques well known to those skilled in the art.
G′ and G″ are well-recognized moduli that are used in measuring the physical properties of viscoelastic fluids as can be seen from “Viscoelastic Fluids” Ronald Darby pages 106 through 115, published by Marcel Dekker, Inc. (1976) which are hereby incorporated by reference.
G′ and G″ are components of the complex modulus, G*, that is used to characterize the viscoelastic behavior of polymers. G′ represents the elastic or solid-like character of the

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