UV-Stable Pest Control Compositions with Bacillus thuringiensis
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Solution Overview
Problem
Existing pest control compositions using Bacillus thuringiensis are ineffective in maintaining bacteria viability and activity after exposure to light, leading to reduced pest control efficacy.
Innovation Solution
Incorporating a polymer with specific monomeric structural units derived from ethylenically unsaturated monomers having benzotriazole and benzophenone structural units, along with Bacillus thuringiensis and water, enhances the composition's UV stability and bacteria viability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pest control compositions using Bacillus thuringiensis are used, then the composition is simple and easy to manufacture, but the bacteria viability and activity are lost after light exposure
Solution Approach 1:
A polymer acts as an intermediary substance between Bacillus thuringiensis and light (UV radiation). The polymer includes monomeric structural units derived from ethylenically unsaturated monomers having UV-absorbing groups (benzotriazole and/or benzophenone) that absorb harmful UV radiation, protecting the bacteria from light-induced damage while maintaining bacteria viability and activity
Solution Approach 2:
The pest control composition is formulated as a composite material combining Bacillus thuringiensis with a specially designed polymer. The polymer serves as a protective matrix containing UV-absorbing monomeric units, creating a composite structure that maintains bacterial viability while enabling light exposure resistance
2Stability of the object's composition
If the polymer includes higher content of UV-absorbing monomers (0.10-10.00 wt%), then the UV stability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent defines specific parameter ranges for UV-absorbing monomers (0.10-10.00 wt%, with preferred ranges of 0.10-1.00 wt% and 0.10-0.50 wt%) to achieve adequate UV protection. By establishing these quantitative parameters, the invention balances UV stability enhancement with manageable manufacturing precision requirements, avoiding overly stringent constraints
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 improved polymer composition maintains higher Bacillus thuringiensis activity and viability after light exposure, resulting in enhanced pest control performance compared to traditional formulations.
Implementation Method 1
the polymer includes from 0.10 wt % to 10.00 wt % of monomeric structural units derived from an ethylenically unsaturated monomer having a benzotriazole structural unit, an ethylenically unsaturated monomer having a benzophenone structural unit
Data Source
AI summary
Embodiments are directed towards pest control compositions including a polymer, wherein the polymer includes from 0.10 wt % to 10.00 wt % of monomeric structural units derived from a benzotriazole, a benzophenone, or combinations thereof based upon a total weight of the emulsion polymer; Bacillus thuringiensis; and water.