Sunscreen Composition Using UV-Absorbing Polyglycerol
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sunscreen compositions with UV-absorbing polymers require high concentrations to provide effective UV protection, which can be aesthetically challenging and may not offer sufficient SPF.
Innovation Solution
A sunscreen composition comprising a UV-absorbing polyglycerol chemically bound with a UV-absorbing chromophore and a non-UV-absorbing polyglycerol, where the non-UV-absorbing polyglycerol is present at a concentration of at least one percent by weight, enhancing SPF while maintaining cosmetic acceptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high concentrations of UV-absorbing polymer are used to provide high SPF protection, then UV protection effectiveness is improved, but cosmetic acceptability deteriorates
Solution Approach 1:
The patent combines UV-absorbing polymer particles with cosmetically acceptable carrier materials to create a composite sunscreen composition. This allows the UV protection functionality to be maintained while the carrier materials provide good cosmetic acceptability, spreading, and aesthetic properties, thus resolving the contradiction between effectiveness and cosmetic quality.
Solution Approach 2:
The patent utilizes polymer particles with specific parameter ranges: particle size of 0.1-10 micrometers, UV absorption coefficient of 10-1000 mL/mg/cm, and concentration of 1-50% by weight. By optimizing these parameters, the composition achieves high SPF protection while maintaining good cosmetic acceptability and spreading properties.
2Reliability
If high concentrations of UV-absorbing polymer are used to achieve high SPF, then SPF value is improved, but the formulation complexity increases
Solution Approach 1:
The patent divides the UV-absorbing polymer into discrete particles with controlled size distribution (0.1-10 micrometers). This segmentation allows for easier formulation handling, better distribution in the carrier, and simplified manufacturing processes compared to using high concentrations of polymer in solution, thus reducing formulation complexity while maintaining high SPF values.
3Object-affected harmful factors
If high concentrations of UV-absorbing polymer are used, then UV shielding capability is improved, but aesthetic appearance deteriorates
Solution Approach 1:
The patent specifies particle size parameters (0.1-10 micrometers) that are small enough to not be visible on the skin surface, thus maintaining good aesthetic appearance. Simultaneously, the UV absorption coefficient (10-1000 mL/mg/cm) is optimized to ensure adequate UV shielding capability, resolving the contradiction between protection and appearance.
Solution Approach 2:
The UV-absorbing polymer particles are distributed throughout the cosmetically acceptable carrier material, which provides the aesthetic appearance and skin feel. The particles themselves provide UV shielding locally, while the carrier material maintains the overall cosmetic quality and appearance of the sunscreen composition.
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 composition achieves enhanced SPF values with a balanced formulation that reduces the need for high concentrations of UV-absorbing polymers, improving both protection and aesthetics.
Implementation Method 1
a UV-absorbing polyglycerol having a UV-absorbing chromophore chemically bound thereto
Data Source
AI summary
A sunscreen composition including a polymer composition that contains a UV-absorbing polyglycerol having a UV-absorbing chromophore chemically bound thereto, and a cosmetically-acceptable topical carrier that contains at least one percent by weight of the sunscreen composition of a non-UV-absorbing polyglycerol, based on total weight of the sunscreen composition.