Pyrethroid Compounds for Bed Bug Control
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Solution Overview
Problem
Current insecticides are ineffective against bed bugs due to resistance and lack of residual activity, posing challenges in controlling infestations, especially in high-density housing and commercial settings, and existing low-toxicity gel-based pesticides fail to target bed bugs effectively.
Innovation Solution
Development of compounds with specific structures (e.g., 3-methyl-5-propyl-cyclohexen-1-one, 3-methyl-5-propyl-cyclohexen-1-ol) that are safe for humans and the environment, which can be used in various formulations to kill bed bugs through contact, including sprays, absorbent materials, dryer sheets, and cleaning products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If long acting, residual insecticides are used to keep bedbug populations in check, then bedbug control effectiveness is improved, but human safety and environmental safety deteriorate
Solution Approach 1:
The patent modifies the chemical structure of pyrethroid compounds by changing parameters such as the hydrocarbyl group chain length (1-11 carbon atoms), saturation level, and branching patterns. These parameter changes create new compounds with improved bedbug efficacy while maintaining or reducing toxicity to humans and the environment, resolving the contradiction between control effectiveness and safety
Solution Approach 2:
The patent creates composite insecticidal compounds combining pyrethroid structures with specific hydrocarbyl groups. These composite molecular structures achieve enhanced bedbug killing effectiveness while the specific composition allows for reduced human and environmental toxicity, addressing the safety-effectiveness contradiction
2Reliability
If gel-based insecticides are used for cockroach control, then cockroach control is improved, but bedbug control capability deteriorates
Solution Approach 1:
The patent develops compounds with dual functionality that can effectively control both cockroaches and bed bugs. The pyrethroid-based compounds with specific hydrocarbyl groups exhibit broad-spectrum insecticidal activity, allowing a single formulation to address multiple pest types, thus resolving the contradiction between specialized cockroach control and bedbug control capability
3Reliability
If insecticidal chemicals are applied to infected areas, then bedbug mortality is improved, but exposure risk to humans and animals deteriorates
Solution Approach 1:
The patent changes the chemical parameters of pyrethroid compounds by modifying hydrocarbyl group structures (chain length, saturation, branching) to achieve a optimal balance between bedbug lethality and human/animal safety. These parameter adjustments reduce the toxic impact on non-target organisms while preserving effectiveness against bed bugs
Data Source
AI summary
Killing of bed bugs is accomplished by bringing the bed bugs into contact with a toxic amount of at least one of the compounds of the structure (I)whereinX is —OH, ═O, or —O(O)CR, wherein R is selected from H and a branched or straight chain, saturated or unsaturated hydrocarbyl group with zero to three double bonds and from 1 to 11 carbon atoms;R1 is H or CH3;R2 is H or CH3;R3 is H or a branched or straight chain, saturated or unsaturated hydrocarbyl group with zero to three double bonds and from 1 to 11 carbon atoms; andwherein the compounds of structure (I) contain from 6 to 20 total carbon atoms in the compounds.