Linear UV-Absorbing Polyether Chromophore Penetration
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Solution Overview
Problem
Current sunscreens with high molecular weights may not provide adequate protection against ultraviolet radiation, leading to skin damage and increased risk of skin cancers, prompting the need for new ultraviolet radiation-absorbing polymeric compounds.
Innovation Solution
Development of linear ultraviolet radiation-absorbing polyethers with chemically bound UV-chromophores, specifically designed to absorb UV radiation in the UVA and UVB ranges, offering enhanced protection by reducing chromophore penetration through the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If high molecular weight sunscreen compounds are used, then penetration through the epidermis is reduced, but UV protection effectiveness may be compromised
Solution Approach 1:
The patent changes the molecular weight parameter of sunscreen compounds by creating polymeric structures with controlled molecular weights (e.g., polyethylene glycol chains with specific degrees of polymerization). This allows optimization of both penetration resistance and UV protection by adjusting polymer chain length and composition.
Solution Approach 2:
The invention creates composite polymeric sunscreen compounds that combine UV-absorbing chromophore groups with polyether backbone structures. This composite approach integrates the UV protection function with the penetration control function in a single molecular structure, resolving the contradiction between protection effectiveness and penetration reduction.
2Object-affected harmful factors
If new polymeric sunscreen compounds are developed, then UV protection and penetration control are improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the sunscreen compound into modular components: a polyether backbone (e.g., polyethylene glycol) with attached UV-absorbing chromophore groups. This segmentation allows independent optimization of each component and simplifies manufacturing by enabling separate synthesis and subsequent coupling of standard building blocks.
Solution Approach 2:
The invention utilizes controllable polymerization parameters (monomer ratios, reaction conditions, catalyst selection) to produce polymeric sunscreen compounds with specific molecular weights and chromophore densities. By adjusting these parameters, the manufacturing process can be optimized for different performance requirements while maintaining ease of production through well-established polymerization techniques.
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 described polymer compositions provide effective protection against UV radiation, demonstrated by high molar extinction coefficients and suitable molecular weights, potentially offering improved skin protection and reduced risk of skin damage.
Implementation Method 1
ultraviolet radiation (UV) can cause molecular and cellular level damage... Ultraviolet radiation absorbing polyether that includes a chemically bound UV-chromophore... absorb UV radiation in the UVA and UVB ranges
Data Source
AI summary
A polymer composition comprising a linear ultraviolet radiation absorbing polyether that comprises a chemically bound UV-chromophore.