Nail Polish Remover Compositions with Composite Solvents
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Solution Overview
Problem
Existing nail polish removal compositions often dry or weaken the nail and surrounding skin, and may not effectively remove polish without leaving residues, especially when using acetone-based solvents.
Innovation Solution
Development of solvent compositions comprising a combination of volatile and non-volatile aprotic organic solvents, such as acetone, butyl acetate, and propylene carbonate, along with a propellant like carbon dioxide, which are aerosolizable and designed to stabilize the composition, minimize drying effects, and enhance nail and skin care by including moisturizing and strengthening ingredients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If acetone-based solvents are used to remove nail polish, then effective removal is achieved, but the nail and surrounding skin become dry and weakened
Solution Approach 1:
The patent uses a composite solvent system combining multiple solvents (acetone, butyl acetate, ethyl acetate, isopropyl alcohol) in specific proportions rather than pure acetone. This composite approach maintains effective nail polish removal while reducing the harsh drying effects through the moderating influence of other solvents in the mixture.
Solution Approach 2:
The patent modifies the chemical composition parameters by limiting acetone to 30-70% of the total composition and incorporating specific non-volatile solvents (15-40%) and volatile solvents (10-30%). These parameter changes transform the solvent system from a purely aggressive acetone-based formulation to a balanced composition that achieves removal effectiveness while minimizing harm to nail and skin.
2Speed
If volatile solvents are used for quick evaporation and removal, then removal speed is improved, but residue formation and drying effects increase
Solution Approach 1:
The patent merges volatile solvents (acetone, isopropyl alcohol) with non-volatile solvents (butyl acetate, ethyl acetate) in a unified composition. The volatile components provide quick evaporation and removal speed, while the non-volatile components remain on the nail surface to prevent drying and residue formation, creating a synergistic effect that addresses both speed and harm reduction.
Solution Approach 2:
The patent assigns different functional qualities to different solvent components: volatile solvents handle the quick removal and evaporation function, while non-volatile solvents handle the moisturizing and residue-prevention function. This local quality differentiation allows each component to optimize its specific role without compromising the other.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compositions effectively remove nail polish without drying or weakening the nail or skin, provide moisturization, and can be used in acetone-containing or acetone-free formulations, ensuring efficient removal with minimal residue and improved nail health.
Implementation Method 1
Products developed for removal of nail polish from fingernails and toenails typically consist of a volatile solvent which may dissolve the lacquer.
Implementation Method 2
Often, the pressure is at least about 40 pounds per square inch (p.s.i.), and at most about 140 p.s.i.
Implementation Method 3
Nail polishes typically contain organic polymers... Products developed for removal of nail polish... typically consist of a volatile solvent which may dissolve the lacquer.
Data Source
AI summary
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a row-level security. One of the methods includes receiving a request for one or more objects. The method includes determining that a type of the one or more requested objects is associated with an object representative of instance level security. The method includes determining access is authorized to at least some of the one or more objects. Determining access includes obtaining a first access statement associated with the type of the one or more objects, obtaining a second access statement associated with the object representative of instance level security, combining at least the first access statement and the second access statement into a third access statement, and obtaining one or more objects using the third access statement. The method also includes providing the authorized subset of objects to the user.