Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2001-07-06
2002-10-22
Zitomer, Fred (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C424S070100, C424S070110, C424S070122, C424S070170, C424S070210, C528S332000, C528S339000, C528S339300
Reexamination Certificate
active
06469131
ABSTRACT:
TECHNICAL FIELD
The present invention is directed to a composition for the care and/or treatment and/or makeup of the skin, including the scalp and/or lips of human beings. The composition contains a liquid oil phase gelled with a particular gellant and may be supplied as a self-supporting stick, for example, a lipstick, and whose application leaves a glossy deposit that does not bleed or wick.
BACKGROUND OF THE INVENTION
Cosmetic or dermatological products often contain a liquid oil phase that is structured, i.e., either thickened, gelled or rendered rigid; in particular, this is the case for solid compositions such as deodorants, salves and lipstick, products for rings under the eyes and cast makeup foundation. This structuring is typically obtained by incorporating waxes and/or fillers into the formulation. Unfortunately, these waxes and fillers tend to render the composition matte, and that is not always desirable, especially for lipstick. Women prefer a lipstick in the form of a rod that leaves a highly glossy film.
Structuring the liquid oil phase limits the exudation or bleeding of the solid compositions and also limits, after application on the skin or lips, the migration of this phase into wrinkles and lines, also called wicking. Migration is particularly undesireable for a lipstick. The considerable migration of the liquid oil phase containing colorants causes an unpleasant esthetic appearance around the lips, particularly accentuating wrinkles and lines. This migration is often mentioned by women as a major fault with conventional lipstick.
Gloss or or shininess is related primarily to the nature of the liquid oil phase. It is possible to reduce the quantity of waxes and fillers in the composition in order to increase the shine of a lipstick, but the tendency toward migration of the liquid oil phase then increases. In other words, the levels of waxes and fillers typically required to manufacture a lipstick without a tendecy toward wicking reduce the shininess of the deposited film.
The present invention is directed to a composition for care products and/or makeup and/or skin treatment and or lips that can remedy these disadvantages.
SUMMARY OF THE INVENTION
In one aspect, the present invention provides a structured composition that includes at least one liquid oil phase structured by at least one gellant. The at least one gellant includes a tertiary amide-terminated polyamide resin (ATPA) of the formula (1):
wherein, n designates a number of repeating units such that terminal amide groups constitute from 10% to 50% of the total amide groups; R
1
at each occurrence is independently selected from a C
1-22
hydrocarbon group; R
2
at each occurrence is independently selected from a C
2-42
hydrocarbon group; R
3
at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and R
3a
at each occurrence is independently selected from hydrogen, C
1-10
alkyl and a direct bond to R
3
or another R
3a
such that the N atom to which R
3
and R
3a
are both bonded is part of a heterocyclic structure defined in part by R
3a
—N—R
3
; wherein the composition further includes at least one amphiphile compound that is a liquid at ambient temperature or has a melting point below 35° C., and has an HLB value of less than 8.0. In one aspect of the invention, the amphiphile is a liquid at ambient temperature.
In another aspect, the present invention provides a structured composition that includes a cosmetically acceptable medium containing at least one liquid-fatty phase structured by at least one gellant. The at least one gellant includes a tertiary amide-terminated polyamide resin (ATPA) of the formula (1):
wherein, n designates a number of repeating units such that terminal amide groups constitute from 10% to 50% of the total amide groups; R
1
at each occurrence is independently selected from a C
1-22
hydrocarbon group; R
2
at each occurrence is independently selected from a C
2-42
hydrocarbon group; R
3
at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and R
3a
at each occurrence is independently selected from hydrogen, C
1-10
alkyl and a direct bond to R
3
or another R
3a
such that the N atom to which R
3
and R
3a
are both bonded is part of a heterocyclic structure defined in part by R
3a
—N—R
3
; wherein the composition further includes at least one amphiphile compound that is liquid at ambient temperature or has a melting point below 35° C., and has an HLB value of less than 8.0. In one aspect of the invention, the amphiphile is a liquid at ambient temperature.
In characterizing the compositions of the present invention, one or more of the following criterion may be independently selected and included in the description of the invention, so long as the criterion are non inconsistent with one another: The terminal amide groups of the formula C(═O)N(R
1
)(R
1
) constitute from 20% to 35% of the total of the amide groups. The integer n is from 1 to 5. R
2
is a C
30-42
hydrocarbon group having the structure of polymerized fatty acid with the carboxylic acid groups removed. Between 1% and 50% of the R
2
groups are a C
4-19
hydrocarbon group. R
3
is a C
2-36
hydrocarbon group and R
3a
is hydrogen. At least 1% of the —N(R
3a
)—R
3
—N(R
3a
)— groups are independently selected from polyalkylene amine,
wherein R
c
is a C
1-3
alkyl group. The composition includes diamide having formula (1) wherein n=0, such that the ratio of terminal amide groups to the total of the amide groups in the resin is from 0.1 to 0.7.
The amphiphile compound includes a lipophile part covalently bonded to a polar part, with the lipophile part including a carbon chain having at least 8 carbon atoms. The amphiphile compound includes a lipophile part bonded to a polar part, with the lipophile part including a carbon chain having at least 16 to 32 carbons. The amphiphile compound includes a lipophile part covalently bonded to a polar part, with the lipophile part including a carbon chain having at least 18 to 28 carbons. The polar part of the amphiphile compound is selected from the group of alcohols and polyols having from 1 to 12 hydroxyl groups, polyoxyalkylenes having at least 2 oxyalkylene groups and having from 0 to 20 propoxylated groups and/or from 0 to 20 ethoxylated groups. The amphiphile compound is selected from:
(a) an ester of stearic, palmitic, behenic, hydroxystearic, oleic, or isostearic acid or mixtures thereof and glycerol, ethylene glycol, propylene glycol, sucrose, sorbitol, or methylglucose;
(b) an polyoxyalkene ether of a C-12 to C-26 branched- or linear-chain fatty alcohol such as stearyl alcohol or castor oil and;
c) a C-12 to C-26 branched-chain fatty alcohol such as octyldodecanol, and their mixtures.
The amphiphile compound is from 2% to 15% of the total weight of the composition. The ATPA resin is from 5 to 40% of the total weight of the composition. The fatty phase includes more than 50% oil or a mixture of non-polar oils. The oil phase includes at least one hydrocarbon oil of mineral or synthetic origin. The liquid oil phase includes at least one oil selected from parleam oil, isoparaffins, and squalane or mixtures thereof. The liquid oil phase is from 5 to 99% of the total weight of the composition. The liquid oil phase is from 20 to 75% of the total weight of the composition. The composition is formulated for the care and/or treatment and/or making-up of keratinous substances. The composition further includes at least one coloring agent. The composition includes at least one coloring agent, where the coloring agent is chosen from lipophile coloring agents, hydrophile coloring agents, pigments, mother-of-pearl, and mixtures thereof. The composition includes coloring agent where the coloring agent is from 0.01 to 40% of the total weight of the composition. The composit
Lawson Nelson E.
Pavlin Mark S.
Arizona Chemical Company
Seed Intellectual Property Law Group PLLC
Zitomer Fred
LandOfFree
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