Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2002-05-16
2003-10-07
Webb, Gregory E. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S417000, C510S424000, C510S477000, C510S488000, C510S505000, C252S364000, C424S061000, C424S401000, C424S702000
Reexamination Certificate
active
06630431
ABSTRACT:
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT
None
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a nail polish lacquer remover which is non-toxic, non-flammable and environmentally benign. In particular, the present invention relates to a composition, kit and method which comprises a liquid mixture of a hydroxylated carboxylic acid ester and a dicarboxylic acid diester which is a solvent for the lacquer.
2. Description of Related Art
Nail polish, sometimes referred to as nail polish lacquer, must be removed from nails without damage to the nail or to health of the individual. At present, most commercial finger nail polish removers utilize acetone, which is flammable and highly volatile, as the base for a liquid formulation. A second class of removers utilize ethyl acetate as the base which is also flammable and highly volatile.
The following patents are representative of the prior art. JP 54046846 (1979) teaches the use of gamma butyrolactone, methyl acetate, water, and perfumes as the basis for the formulation. This formulation is claimed to be noncombustible. A number of other compounds are described which are different from those of the present invention. JP 57122013 (1982) claims an acetone, water, and 2-octyldodecyl oleate mixture. U.S. Pat. No. 4,735,798 (1988) claims an acetone, ethyl acetate, ethanol, water, and glycerin mixture with a claim of improved adhesion of the nail polish subsequent to use of the remover.
Two (2) U.S. patents separately describe the use of succinate or lactate esters.
In Bayless (U.S. Pat. No. 5,372,742), the solvent d-limonene which is a skin irritant is used in the formulations. In addition, ethyl acetate and cetyl acetate are claimed as essential. The present invention does not use either limonene or cetyl acetate. In Farynlarz et al (U.S. Pat. No. 5,486,305), a volatile component, acetone, is described as essential, in addition to a C
4
to C
30
diester, and water. These formulations do not include hydroxylated carboxylic acid esters (e.g. ethyl lactate) and requires that one component be a volatile solvent. Thus solvents such as acetone and limonene are required in these formulations. These components are flammable and toxic.
SUMMARY OF THE INVENTION
The present invention relates to a composition for removing nail polish lacquer which comprises as a mixture:
(a) a hydroxylated carboxylic acid ester which is liquid at STP; and
(b) a dicarboxylic acid diester which is a liquid at STP, wherein the mixture is a solvent for the nail polish lacquer.
Further, the present invention relates to a composition for removing nail polish which comprises as a mixture:
(a) ethyl lactate; and
(b) diethyl succinate, wherein the mixture is a solvent for nail polish.
The present invention also relates to a nail polish lacquer removing composition comprising as a mixture:
(a) for the lacquer 1 to 10 part by volume of ethyl lactate;
(b) 1 to 10 part by volume of diethylsuccinate; and
(c) optionally up to about 0.1 part by volume water based upon (a) and (b).
The present invention also relates to a nail polish lacquer removing composition which comprises in admixture:
(a) a liquid hydroxylated mono, di- or tri-carboxylic acid ester, wherein the hydroxylated mono- , di- or trihydroxylated acid moiety is selected from the group consisting of lactic, malic, citric and tartaric acids and mixtures thereof, and the ester moiety is lower alkyl containing 1 to 4 carbon atoms; and
(b) a liquid dicarboxylic acid diester of the formula
wherein R
1
and R
2
are lower alkyl containing 1 to 4 carbon atoms, which can be the same or different, and x is an integer of 1 to 4.
The present invention also relates to a method for removing a dried nail lacquer from the nail which comprises:
(a) applying a composition comprising as a mixture a hydroxylated carboxylic acid ester which is liquid at STP; and a dicarboxylic acid diester which is a liquid at STP, wherein the mixture is a solvent for the nail polish lacquer so as to solvate the nail polish on the nail; and
(b) removing the solvated nail polish from the nail.
The present invention also relates to a method for removing a dried nail polish lacquer from the nail which comprises:
(a) applying a composition which comprises a mixture ethyl lactate; and diethyl succinate, wherein the mixture is a solvent for nail polish to solvate the nail polish on the nail; and
(b) removing the solvated nail polish from the nail.
The present invention relates to a method for removing a dried nail polish lacquer from the nail which comprises:
(a) applying a composition comprising as a mixture 1 to 10 part by volume of ethyl lactate; 1 to 10 part by volume of diethylsuccinate; and optionally up to about 0.1 part by volume water based upon (a) and (b) to solvate the nail polish lacquer on the nail; and
(b) removing the solvated nail polish from the nail.
The present invention also relates to a method for removing a nail polish lacquer from the nail which comprises:
(a) applying a composition as a mixture which comprises a liquid hydroxylated mono, di- or tri-carboxylic acid ester wherein the acid moiety is selected from the group consisting of lactic, malic, citric and tartaric acids and mixtures thereof, and the ester moiety is alkyl containing 1 to 4 carbon atoms; and a liquid dicarboxylic acid diester of the formula
wherein R
1
and R
2
are lower alkyl containing 1 to 4 carbon atoms which can be the same or different and x is 1 to 4 to solvate the nail polish lacquer on the nail;
(b) removing the solvated nail polish from the nail.
The present invention also relates to a kit for solvating nail polish lacquer which comprises:
(a) a composition which comprises as a mixture a hydroxylated carboxylic acid ester which is liquid at STP and a dicarboxylic and diester which is liquid at STP, wherein the mixture is a solvent for the nail polish lacquer in a sealable container; and
(b) an applicator in the container which is removable from the container for applying the composition to the nail to solvate the nail polish lacquer for removal.
The present invention also relates to a kit for solvating nail polish lacquer which comprises:
(a) a composition which comprises as a mixture ethyl lactate; and diethylsuccinate, wherein the mixture is a solvent for nail polish lacquer; and
(b) an applicator in the container and removable from the container for applying the composition to the nail.
The present invention also relates to a kit for solvating nail polish lacquer which comprises:
(a) a composition which comprises as a mixture lacquer 1 to 10 part by volume of ethyl lactate; 1 to 10 part by volume of diethyl succinate; and optionally up to about 0.1 part by volume water based upon the lactate and succinate in a sealable container; and
(a) an applicator in the container which seals the container and which is removable from the container for applying the composition to the nail to solvate the nail polish lacquer for removal.
The present invention also relates to a kit for solvating nail polish lacquer which comprises:
(a) a composition as a mixture which comprises a liquid hydroxylated mono, di- or tri-carboxylic acid ester wherein the acid moiety is selected from the group consisting of lactic, malic, citric and tartaric acids and mixtures thereof, and the ester moiety is alkyl containing 1 to 4 carbon atoms; and
a liquid dicarboxylic acid diester of the formula
wherein R
1
and R
2
are lower alkyl containing 1 to 4 carbon atoms which can be the same or different and x is 1 to 4 in a sealable container; and
(b) an applicator which is removable from the container for applying the composition to the solvate the nail polish lacquer from removal.
In particular, lactate-succinate ester blends are excellent nail polish lacquer removing solvents which are non-toxic. The preferred embodiment of the invention uses ethyl lactate and diethyl succinate in equal volume proportions. These esters are miscible with each other in all proportions. In addition, some water can be added to the mixture, howeve
Board of Trustees of Michigan State University
McLeod Ian C.
Webb Gregory E.
LandOfFree
Nail polish lacquer remover does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nail polish lacquer remover, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nail polish lacquer remover will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3118945