DEET Sunscreen Composition with Polymeric Binder for Clump-Free Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sunscreen and insect repellant compositions often fail to provide a broad spectrum of skin protection and insect repellency while maintaining a stable, clump-free consistency.
Innovation Solution
The development of compositions comprising at least 15 weight percent diethyl toluamide (DEET) or dihydronepetalactones, combined with UV ray absorbers and a polymeric binder system, including C10-30 alkyl acrylate and C12-22 alkyl methacrylate polymers, to create a stable and effective sunscreen and insect repellant formulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high concentrations of DEET and sunscreen components are used to provide broad spectrum protection and insect repellency, then the effectiveness of skin protection and insect repellency is improved, but the composition becomes unstable and forms clumps or agglomerates
Solution Approach 1:
The patent introduces a polymeric binder system as an intermediary substance that mediates between the active ingredients (DEET and sunscreen components) and the base formulation. This binder system prevents direct interaction between incompatible active ingredients that would otherwise cause clumping, while still allowing them to function effectively at high concentrations for broad spectrum protection and insect repellency.
Solution Approach 2:
The patent creates a composite formulation by combining multiple components including DEET, sunscreen components, and a polymeric binder system into a unified stable composition. This composite structure allows the maintenance of high concentrations of active ingredients without compromise of stability, as the polymeric binder integrates all components into a homogeneous stable matrix.
2Reliability
If high concentrations of active ingredients are used to ensure broad spectrum protection and insect repellency, then the protective function is improved, but the manufacturing complexity and formulation difficulty increase
Solution Approach 1:
The patent modifies the formulation parameters by introducing a polymeric binder system that changes the physical and chemical properties of the composition. This parameter change enables the formulation to maintain stability at high active ingredient concentrations, simplifying the manufacturing process by reducing the need for complex stabilization measures while ensuring broad spectrum protection and insect repellency.
3Adaptability or versatility
If multiple sunscreen components and insect repellant agents are combined to provide comprehensive protection, then the spectrum of protection is broadened, but the risk of clumping and agglomeration increases
Solution Approach 1:
The polymeric binder system serves as an intermediary that facilitates the compatibility of multiple sunscreen components and insect repellant agents. It creates a stable matrix that prevents phase separation and clumping, allowing the formulation to provide comprehensive broad spectrum protection without compromising consistency.
Solution Approach 2:
The patent achieves homogeneity in the formulation by using a polymeric binder system that ensures uniform distribution of all active ingredients throughout the composition. This homogeneous structure prevents clumping and agglomeration while maintaining the versatility and broad spectrum protection provided by the combination of multiple sunscreen components and insect repellant agents.
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 solution provides a stable, broad-spectrum sunscreen and insect repellant composition that effectively protects against UV rays and insects, maintaining a desirable consistency without clumps, thus enhancing skin protection and repellency.
Implementation Method 1
a polymeric binder system, wherein all weight percents are based on a total weight of said combination sunscreen and insect repellant composition
Implementation Method 2
one or more sunscreen components, each of said one or more sunscreen components being capable of absorbing ultraviolet light rays
Data Source
AI summary
The present invention is directed to combination sunscreen and insect repellant compositions. The combination sunscreen and insect repellant compositions contain (i) diethyl toluamide (or N,N-Diethyl-3-methylbenzamide or DEET), and (ii) one or more sunscreen components, with each sunscreen component being capable of absorbing ultraviolet light rays. The combination sunscreen and insect repellant compositions may contain additional composition components such as a polymeric binder system, and deionized water. The present invention is also directed to methods of making and using combination sunscreen and insect repellant compositions.