Plastic Aerosol Containers for Stable Natural Pest Control

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Solution Overview

Problem

Existing pest control products with natural ingredients face challenges such as instability at varying temperatures, phase separation, and limited efficacy, particularly when stored in glass containers.

Innovation Solution

An aerosol pest control product is developed, featuring a clear, aqueous pest control composition stored in a pressurized plastic container. The composition includes sodium lauryl sulfate, a natural active ingredient, isopropyl alcohol, and water, with a propellant chosen from nitrogen, carbon dioxide, or mixtures thereof, ensuring stability across a broad temperature range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If glass containers are used to store clear, aqueous pest control compositions, then the clarity and aesthetic appeal of the product is improved, but the composition becomes unstable at varying temperatures and phaseseparates

Engineering Contradiction:
ImproveclarityVSAvoidphase stability
Core Design Contradiction:
Illumination intensityVSStability of the object's composition

Solution Approach 1:

The patent changes the container material parameter from glass to specific plastics (polyethylene, polypropylene, polybutylene, polystyrene, or cellulose derivative) to resolve the contradiction. This material substitution maintains clarity while improving temperature stability and preventing phase separation of the aqueous pest control composition.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses composite material solutions by selecting specific plastic polymers that combine the optical clarity of glass with the thermal stability and flexibility of plastic materials. These composite plastic containers provide both aesthetic clarity and compositional stability across temperature ranges.

Inventive Principle:
Principle #40Composite materials

2Productivity

If pressurized containers are used to store aerosol pest control compositions, then the dispensing efficiency and product delivery is improved, but the container must withstand high internal pressure which limits material choices

Engineering Contradiction:
Improvedispensing efficiencyVSAvoidcontainer material selection
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent changes the pressure resistance parameter of the container by selecting specific plastic materials (polyethylene, polypropylene, polybutylene, polystyrene, or cellulose derivative) that can withstand the required internal pressure of 414-1100 kPa while maintaining other desirable properties like clarity and flexibility.

Inventive Principle:
Principle #35Parameter changes

3Object-affected harmful factors

If natural ingredients are used in pest control products, then the product safety and consumer acceptance is improved, but the product efficacy and stability are reduced

Engineering Contradiction:
Improveproduct safetyVSAvoidproduct efficacy
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent changes the concentration parameters of natural active ingredients (essential oils, plant extracts, or amino acids) to optimized levels that maintain both safety and efficacy. By precisely controlling the amount and combination of natural ingredients, the product achieves reliable pest control performance while maintaining safety and stability.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses composite formulations combining multiple natural ingredients (essential oils, plant extracts, amino acids) with carefully selected concentrations to achieve synergistic effects that improve both efficacy and stability while maintaining safety and consumer acceptance.

Inventive Principle:
Principle #40Composite materials

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 product maintains clarity and phase stability over a wide temperature range when stored in plastic containers, enhancing its efficacy and user experience compared to traditional glass containers.

Implementation Method 1

from about 1% to about 15% by weight of the composition of sodium lauryl sulfate

Methodology Applied
Scientific EffectSurfactant: Surfactant

Implementation Method 2

a pressurized plastic container having an internal gage pressure of from about 414 kPa to about 1,100 kPa

Methodology Applied
Scientific EffectPressure: Pressure Increase

Implementation Method 3

from about 0.1% to about 45% by weight of the composition of a first solvent, wherein the first solvent is isopropyl alcohol

Methodology Applied
Scientific EffectSolvation: Solvation

Data Source

PatentUS20250049041A1Pest control compositions contained in plastic containers
Publication Date: 2025.02.13 PROCTER & GAMBLE CO
  • US20250049041A1 patent drawing
  • US20250049041A1 patent drawing

AI summary

The present disclosure relates to improved pest control compositions and aerosol pest control products comprising the pest control compositions contained in plastic containers. The aerosol pest control product may comprise a spray dispenser connected to a pressurized plastic container and a pest control composition contained in the plastic container. The pest control composition may comprise from about 1 wt % to about 15 wt % of sodium lauryl sulfate; from about 0.005 wt % to about 15 wt % of an active ingredient, wherein the active ingredient is an essential oil; from about 0.1 wt % to about 45 wt % of a first solvent, wherein the first solvent is isopropyl alcohol; from about 45 wt % to about 99 wt % of water; and a propellant, preferably the propellant is selected from the group consisting of nitrogen, carbon dioxide, and mixtures thereof.