Nail Glue Composition Using Vitamin E Stabilizers
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Solution Overview
Problem
The existing nail glue compositions rely on phenolic stabilizers like BHA, HQ, and MEHQ, which have been linked to health risks and are likely to be banned or restricted in cosmetics, necessitating an alternative inhibitor stabilizer.
Innovation Solution
A nail glue composition that replaces phenolic stabilizers with Vitamin E compounds, specifically α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, α-tocotrienol, β-tocotrienol, γ-tocotrienol, and δ-tocotrienol, at a concentration of at least 0.02 wt% to enhance durability and longevity of the adhesion between artificial and natural nails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phenolic stabilizers (BHA, HQ, MEHQ) are used in nail glue compositions, then polymerization inhibition and shelf life are improved, but health safety and regulatory compliance deteriorate
Solution Approach 1:
The patent removes phenolic stabilizers (BHA, HQ, MEHQ) from the nail glue composition entirely, extracting the harmful component while maintaining the essential polymerization inhibition function through alternative mechanisms
Solution Approach 2:
The patent changes the chemical parameters of the stabilizer system by replacing phenolic compounds with non-phenolic alternatives, specifically adjusting the chemical composition to eliminate harmful substances while maintaining functional performance
2Duration of action of stationary object
If phenolic stabilizers are used to prevent premature polymerization, then product shelf life is improved, but regulatory compliance and market availability deteriorate
Solution Approach 1:
The patent extracts and eliminates phenolic stabilizers from the formulation, removing the regulatory burden while maintaining shelf life through alternative stabilizing mechanisms that comply with current cosmetic regulations
Solution Approach 2:
The patent modifies the chemical parameters of the stabilizer system to use non-phenolic compounds, thereby changing the regulatory classification and enabling compliance with EU and other international cosmetic regulations
3Reliability
If BHA is used as a stabilizer, then polymerization inhibition is improved, but carcinogenicity and safety classification deteriorate
Solution Approach 1:
The patent extracts BHA from the formulation entirely, removing the carcinogenic substance while maintaining polymerization inhibition through alternative non-carcinogenic stabilizers
Solution Approach 2:
The patent converts the harmful phenolic stabilizer system into a beneficial non-phenolic system, transforming a carcinogenic formulation into a safe one while preserving the essential polymerization inhibition function
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 use of Vitamin E compounds as stabilizers significantly increases the durability and longevity of the adhesion between artificial and natural nails, while also improving the tensile strength of the bond, thus providing a safer and effective alternative to phenolic stabilizers.
Implementation Method 1
They have been, and still are, widely used in the polymer industry but have fallen out of favour when used in cosmetic products for safety reasons... phenolic inhibitors/stabilisers are added both during and after the manufacturing process for monomers (especially acrylate monomers) to prevent or slow auto polymerisation by absorbing free radicals
Implementation Method 2
Most nail glues used to bond artificial nails to natural nails are based on 2-ethyl cyanoacrylate... These adhesives, also known as 'superglues', are strong and fast-acting
Data Source
AI summary
A nail glue composition includes at least one cyanoacrylate of the formula CH2γC(CN)COOR, an anionic stabiliser, and an antioxidant stabiliser comprising at least one stabiliser compound selected from the group consisting of α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, α-tocotrienol, β-tocotrienol, γ-tocotrienol, δ-tocotrienol, and derivatives thereof. R is ethyl, methoxyethyl, ethoxyethyl, n-butyl or octyl or mixtures thereof. The at least one stabiliser compound is in an amount of at least 0.02 wt % of the nail glue composition.