Drug – bio-affecting and body treating compositions – Manicure or pedicure compositions
Reexamination Certificate
2001-01-25
2002-04-30
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Manicure or pedicure compositions
C424S401000
Reexamination Certificate
active
06379656
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to nail polish removers and specifically to novel liquid compositions which dissolve fingernail polishes and which are constituted by three or two liquid phases, not miscible, which are superimposed one over the other when the compositions remain still. This invention can be formulated as a “Bi-Phase” or “Tri-Phase” remover. The Bi-Phase contains two separate layers: a solvent phase top layer and an aqueous phase bottom layer. The Tri-phase contains an oil phase top layer, a solvent phase middle layer and an aqueous phase bottom layer. The present invention is designed for the purpose of conditioning and protecting nails and cuticles while removing the nail enamels simultaneously.
In U.S. Ser. No. 09/416,573 the composition comprises three liquid and immiscible phases, the phases being superimposed one on the other when the composition is still. The top phase comprises from 9.8% to 30% by weight of at least an oil a) selected from the group consisting of mineral oils and vegetable oils which are in liquid form at a temperature ranging from 40° F. to 120° F.
The solvent phase comprises from 20% to 56% by weight of at least one removing nail enamel solvent b) which is immiscible with water, and which is other than a hydrocarbon; from 0.1% to 24% by weight of at least one removing nail enamel solvent c) which is miscible with water—the total weight of solvents b) and c) in the composition being from 20.1% to 70% by weight.
The bottom phase comprises
from 8 to 40% by weight of water; and
from 8% to 35% by weight of at least one glycol polymer d) having an average molecular weight in the range of 200 to 1200. The glycol is selected from the group consisting of polyethylene glycols and polypropylene glycols.
In the examples in U.S. Ser. No. 09/416,573 the solvent immiscible with water is ethyl acetate and the solvent miscible with water is acetone.
It has now been found that substantial improvements are achieved if instead of the ethyl acetate the composition contains about 25-70% of methyl acetate and 0.5-10% of tert-butyl acetate. One advantage recently achieved is the elimination of acetone or solvent which may dehydrate the fingernail and cuticles.
The mixture of these two solvents also permits to obtain a bi-phase, that is a composition comprising only a solvent phase and an aqueous phase. This bi-phase composition is totally new in this Continuation-in-part application.
The tri-phase composition consists of a
Top Layer:
Oil Phase
Middle Layer:
Solvent Phase
Bottom Layer:
Aqueous Phase
As shown in the Table hereinbelow, the total formulation consists of
MATERIALS
WEIGHT %
Mineral Oil
19.621
Methyl Acetate
25.868
Tert-Butyl Acetate
8.74
Deionized Water
31.00
P425 PPG
14.634
Benzophenone-1 UV Stabilizer
0.006
Benzophenone-4 UV Stabilizer
0.002
The composition may also contain coloring materials and a fragrance as shown in the Table hereinbelow.
D&C Yellow #11
0.075%
FD&C Green #6
0.009
D&C Red #33
0.007
The composition of the three phases is as shown in the Table hereinbelow.
Phases
OIL PHASE
SOLVENT PHASE
AQUEOUS PHASE
Oil(s)
1
:
Solvent(s)
2
:
Water: 40.00-
98.00-100.00%
50.00-80.00%
99.998%
Glycol(s)
3
:
Glycol(s):
20.00-50.00%
0.00-60.00%
Oil soluble dye(s):
Solvent soluble
Water & solvent
0.00-2.00%
dye(s):
soluble dye(s):
0.00-2.00%
0.00-2.00%
UV stabilizer(s):
UV stabilizer(s):
UV stabilizer(s):
0.001-0.01%
0.001-0.01%
0.001-0.01%
Fragrance(s):
Fragrance(s):
Fragrance(s):
0.001-0.01%
0.001-0.01%
0.001-0.01%
Solvent(s)
1
:
0.00-60.00%
2
Top layer:
Bottom layer:
20.00-70.00%
20.00-60.00%
3
Top layer:
Middle layer:
Bottom layer:
10.00-30.00%
3
40.00-70.00%
3
20.00-40.00%
3
The oil is selected from the group of oil that is in liquid at a temperature from 40° F. to 120° F., including but not limited to mineral oil castor, etc.
The solvents are methyl acetate and tertbutyl acetate.
Glycols are selected from the group of polypropylene glycol and the group of polyethylene glycol
The formulation for each phase
Top Layer: Oil Phase
Middle Layer: Solvent Phase
Bottom Layer: Aqueous Phase
Mineral Oil 70:
99.60%
Methyl Acetate:
59.060%
DI Water:
92.451%
D&C Yellow #11
0.380%
t-Butyl Acetate:
7.500%
t-Butyl Acetate:
7.519%
Benzophenone-1
0.010%
Benzophenone-1
0.010%
Benzophenone-4
0.010%
Lilac Fragrance:
0.010%
P-425 PPG:
33.410%
D&C Red #33:
0.02%
FD&C Green
0.020%
Total
100.000
Total
100.000
Total
100.000
19.7%
43.8%
36.5%
The Bi-Phase composition consists of a
Top Layer:
Solvent Phase
Bottom Layer:
Aqueous Phase
Coloring materials and a fragrance are preferably added.
Materials
Weight %
Methyl Acetate
24.930
t-Butyl Acetate
15.000
P425 PPG
20.046
FD&C Green #6
0.012
Benzophenone-1
0.006
Fragrance
0.006
DI Water
39.952
D&C Red #33
0.008
Preservative
0.040
Total
100.000
The formulation for each phase
Top Layer: Solvent Phase
Bottom Layer Aqueous Phase
Methyl Acetate
41.550%
DI Water:
99.880%
t-Butyl Acetate
25.000%
D&C Red #33
0.02%
P425 PPG
33.410%
Preservative
0.100%
FD&C Green #6
0.020%
Benzophenone-1
0.010%
Fragrance
0.010%
Total
100.000
100.000
60%
40%
REFERENCES:
patent: 6187299 (2001-02-01), Wimmer et al.
Armstrong George H.
Candia Thomas R.
Mui Ronnie F.
Pepe Michelle E.
Howard S.
Page Thurman K.
Tevco Inc.
LandOfFree
Liquid composition used for dissolving fingernail polishes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid composition used for dissolving fingernail polishes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid composition used for dissolving fingernail polishes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2849783