Tick Repellent Composition With Heat-Stable Active Ingredients
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Solution Overview
Problem
Farnesyl acetone's repellent effect decreases rapidly due to oxidative modification during heat treatment, making it unsuitable for long-term anti-tick treatment of materials like bedding and carpets.
Innovation Solution
Using 2,4-DHAP or xanthoxyline as active ingredients, which have low transpiration properties and are less prone to oxidation, maintaining effective tick repellency for extended periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If farnesyl acetone is used as an active ingredient for tick repellent treatment, then the repellent effect lasts for a long period of time (14 days or more), but the oxidation reactivity is high causing the repellent effect to decrease rapidly during heat treatment
Solution Approach 1:
The patent changes the chemical structure parameter of the active ingredient from farnesyl acetone to 2,4-DHAP or xanthoxyline. These alternative compounds have different molecular structures that inherently possess lower oxidation reactivity while maintaining or enhancing tick repellent efficacy, thus resolving the contradiction between duration and heat treatment stability
Solution Approach 2:
The patent selects compounds (2,4-DHAP and xanthoxyline) that are naturally derived and can be readily applied to living materials. These compounds provide sustained protection without requiring frequent reapplication or replacement of treated materials, effectively addressing the long-term durability requirement
2Duration of action of moving object
If farnesyl acetone is used for anti-tick treatment of living materials, then the repellency rate remains high over 14 days, but the treatment is not suitable for materials with long replacement cycles (years)
Solution Approach 1:
The patent changes the chemical composition parameter by selecting 2,4-DHAP or xanthoxyline as active ingredients. These compounds exhibit superior oxidative stability compared to farnesyl acetone, enabling the treated living materials to maintain effective tick repellency over extended periods (years) that align with the replacement cycles of bedding and carpets
Solution Approach 2:
The patent ensures continuous effective protection by selecting compounds that resist degradation over time. The low oxidation reactivity of 2,4-DHAP and xanthoxyline maintains consistent repellent activity throughout the service life of treated materials, providing uninterrupted protection against ticks
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 chosen compounds provide stable tick repellency for up to 3 years, preventing tick propagation and reducing allergy risks, suitable for materials with long replacement cycles.
Implementation Method 1
2,4-DHAP and xanthoxyline have low transpiration properties, 6×10−5 mmHg and 1.5×10−5 mmHg respectively, under conditions of 25° C. and are also difficult to oxidize and stable compared to farnesyl acetone
Data Source
AI summary
An insect repellent is suitable for an anti-tick treatment to living materials such as bedding and carpets with long-term replacement cycles in years and that also has a tick repellent effect stably lasting over a long period of time. The insect repellent contains 2,4-DHAP or xanthoxyline as an active ingredient. 2,4-DHAP and xanthoxyline can stably maintain repellency rates of at least 30-40% and about 90% respectively even if a heating treatment at 150° C. is continued for 5 minutes or longer, that is, for about 3 years in an environment of 25° C.