Oil-Based Insect Repellent Composition with Fixatives for Longer Repellency
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Solution Overview
Problem
Existing essential oil-based insect repellents often provide short-term protection and have negative sensory attributes such as negative skin feel and odor, failing to meet consumer demands for long-lasting efficacy and positive aesthetics.
Innovation Solution
A composition comprising clove oil, peppermint oil, and geranium oil, combined with a fixative and solubilizer, enhances the duration and pleasantness of insect repellency, using specific ratios and additives to improve skin feel and odor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the concentration of essential oil active ingredient is increased to lengthen the duration of repellency, then the duration of repellency is improved, but the essential oils become irritating to the skin
Solution Approach 1:
The patent uses a composite formulation combining multiple essential oils (clove oil, peppermint oil, geranium oil, thyme oil, citronella oil) with fixatives and solubilizers. This composite approach allows the formulation to achieve extended repellency duration (over 7.5 hours) while maintaining skin compatibility, as each component contributes different properties that collectively resolve the contradiction between duration and skin irritation.
Solution Approach 2:
The patent optimizes the concentration parameters of each essential oil component within specific ranges (e.g., clove oil 0.1-3.0%, peppermint oil 0.1-10.0%, geranium oil 0.5-10.0%) rather than using high concentrations of single oils. This parameter optimization allows the formulation to achieve long-duration repellency while staying below skin irritation thresholds for individual oils.
2Reliability
If plant-based essential oil repellents are used as alternatives to synthetic repellents, then safety and natural perception are improved, but the repellency duration becomes short and efficacy is reduced
Solution Approach 1:
The patent creates a composite essential oil formulation that combines multiple plant-based oils with different volatility profiles and repellent properties. This composite structure enables the product to maintain the safety and natural perception benefits of plant-based ingredients while achieving extended repellency duration through synergistic interactions among components and the inclusion of fixatives.
Solution Approach 2:
The patent introduces fixatives and solubilizers as intermediary substances that enhance the performance of essential oils. These intermediaries help retain the essential oils on the skin longer (extending duration) and improve their distribution and stability, thereby bridging the gap between natural ingredient safety and effective long-duration repellency.
3Reliability
If essential oil-based formulations are used, then natural and safe perception is improved, but negative sensory attributes such as negative skin feel and odor occur
Solution Approach 1:
The patent formulates a composite mixture of essential oils where the combined odor profile and skin feel properties are optimized. The specific combination of clove oil, peppermint oil, geranium oil, thyme oil, and citronella oil creates a balanced sensory experience that masks individual negative attributes while maintaining natural perception.
Solution Approach 2:
The patent selects specific essential oil components and their ratios to optimize local sensory qualities. By carefully balancing the concentrations of oils with different aromatic profiles and skin feel characteristics, the formulation achieves an overall pleasant odor and positive skin feel while retaining the natural and safe perception associated with plant-based ingredients.
Data Source
AI summary
A composition for repelling insects is disclosed. The composition may include an active component made of (i) a combination of clove oil, geranium oil, and peppermint oil, (ii) a fixative, and (iii) a solubilizer. The composition may include (i) from about 2.5 to about 15 wt. % of an active component made only of (a) from about 0.1 to about 5.0 wt. % of clove oil, (b) from about 0.5 to about 15.0 wt. % of geranium oil, and (c) from about 0.1 to about 15.0 wt. % of peppermint oil, (ii) from about 3 to about 15 wt. % of a fixative, and (iii) from about 15 to about 45 wt. % of a solubilizer.