Long-Chain Aliphatic Ketones for UV Reflection and Water Repellence
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Solution Overview
Problem
Current anti-ultraviolet agents, such as titanium oxide and zinc oxide, pose toxicity concerns, and there is a need for effective water-repellent agents in cosmetics and other applications.
Innovation Solution
The use of specific long-chain aliphatic aldehydes and ketones, like 2-pentacosanone, 2-heptacosanone, and triacontanal, which are derived from the wax of the white-tailed skimmer dragonfly, providing both ultraviolet reflecting and water-repellent properties when applied in crystalline form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If titanium oxide or zinc oxide is used as ultraviolet reflecting agent, then ultraviolet protection is achieved, but toxicity problems occur
Solution Approach 1:
The patent changes the chemical composition parameter from conventional metal oxides (titanium oxide, zinc oxide) to long-chain aliphatic aldehydes and ketones (C24-C32), fundamentally altering the substance type while maintaining ultraviolet reflecting capability. This parameter change eliminates toxicity while preserving UV protection function.
Solution Approach 2:
The patent employs organic compounds (aldehydes and ketones) that can be applied as temporary coatings rather than permanent metal oxide layers. These organic substances provide UV protection during their functional lifetime and can be naturally degraded or removed, avoiding the persistence and bioaccumulation issues of metal oxides.
2Object-affected harmful factors
If conventional water-repellent agents are used in cosmetics, then water repellence is achieved, but safety concerns arise
Solution Approach 1:
The patent identifies compounds that simultaneously provide multiple functions: ultraviolet reflection and water repellence. The long-chain aliphatic aldehydes and ketones create a dual-functional coating that eliminates the need for separate UV protection and water-repellent agents, reducing the number of ingredients and potential safety issues.
Solution Approach 2:
The patent changes the molecular structure parameter to long-chain aliphatic compounds (C24-C32) that naturally provide both UV reflection and water repellence through their physical properties, eliminating the need for potentially harmful conventional water-repellent additives in cosmetic formulations.
3Object-affected harmful factors
If metal oxide particles are applied to skin, then ultraviolet protection is provided, but skin penetration and toxicity risks increase
Solution Approach 1:
The patent replaces the mechanical particle system (metal oxide particles) with an organic molecular coating system. Instead of relying on physical particle scattering, the organic compounds form a molecular layer that reflects UV light, eliminating particle penetration risks while maintaining protection efficacy.
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
These compounds effectively protect against ultraviolet light and impart water repellence, offering a safer and more effective alternative for cosmetics and paints by achieving spectral reflectance and water contact angles that meet specific criteria.
Implementation Method 1
specific long-chain aliphatic aldehydes and ketones, which are constituent components of the wax present on the surface of mature male dragonflies, have strong ultraviolet reflecting ability
Implementation Method 2
specific long-chain aliphatic aldehydes and ketones, which are constituent components of the wax present on the surface of mature male dragonflies, have strong ultraviolet reflecting ability and high water repellence
Data Source
AI summary
The present invention relates to an ultraviolet reflecting agent composition or a water repellent agent composition, which contains at least one compound selected from among 2-pentacosanone, 2-heptacosanone, 2-nonacosanone, tetracosanal, hexacosanal, octacosanal and triacontanal.