pH-Stabilized Peroxide Microemulsion for Hard-Water Cleaning
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Solution Overview
Problem
Existing cleaning solutions face challenges with formulation performance, color stability, odor, and extended shelf life while maintaining environmentally preferred characteristics.
Innovation Solution
A pH-stabilized peroxide-based microemulsion formulation using a two-component buffer system, comprising a first buffering agent and a second buffering agent, to maintain a pH of approximately 2.0 to 2.5 in diluted and non-diluted forms, even in the presence of EPA-defined hard water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a peroxide-based cleaning formulation is used, then cleaning performance is improved, but pH instability and corrosiveness worsen
Solution Approach 1:
A two-component buffer system acts as an intermediary between the peroxide-based cleaning agents and the environment, mediating pH control to maintain stability while preserving cleaning effectiveness. The buffer system components work together to resist pH changes without interfering with the peroxide's oxidizing action.
Solution Approach 2:
The formulation uses a two-component buffer system that maintains pH within a specific range (approximately 2.0 to 2.5) through coordinated action of buffer components. This parameter control allows the peroxide to remain effective for cleaning while preventing excessive corrosiveness that would occur at lower pH levels.
2Productivity
If pH is reduced to enhance cleaning power, then cleaning performance is improved, but corrosiveness worsens
Solution Approach 1:
The two-component buffer system precisely controls pH within the range of approximately 2.0 to 2.5, optimizing cleaning power while minimizing corrosiveness. This parameter optimization allows the formulation to achieve effective cleaning without the excessive metal corrosion associated with lower pH levels.
Solution Approach 2:
The buffer system converts the potential harm of low pH (corrosiveness) into a benefit by maintaining the pH at an optimal level that provides sufficient cleaning power while protecting metal surfaces. The peroxide's oxidizing action provides cleaning effectiveness without requiring excessively low pH levels.
3Stability of the object's composition
If conventional buffer systems are used, then pH control is achieved, but colorant and fragrance stability worsen
Solution Approach 1:
The two-component buffer system acts as a specialized intermediary that provides pH control while being compatible with colorants and fragrances. Unlike conventional single-component buffers that may cause precipitation or degradation, this buffer system maintains stability of all formulation components including aesthetic additives throughout the shelf life.
4Device complexity
If single-component buffer systems are used, then formulation simplicity is maintained, but pH stability in hard water worsens
Solution Approach 1:
The formulation uses a composite two-component buffer system that combines two buffering agents working synergistically. This composite approach provides superior pH stability in hard water conditions compared to single-component buffers, while adding minimal complexity to the formulation. The two components complement each other to resist pH changes from water hardness.
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 formulation achieves stable pH levels, enhancing the performance and shelf life of cleaning solutions while minimizing corrosiveness and maintaining desired properties.
Implementation Method 1
a pH stabilizing system, wherein the pH stabilizing system comprises: (a) a first buffering agent, and (b) a second buffering agent
Implementation Method 2
an oxidizing agent, wherein the oxidizing agent comprises a peroxide
Implementation Method 3
peroxide-based microemulsion formulations
Data Source
AI summary
A microemulsion cleaning solution, including: water; a solvent; an oxidizing agent, wherein the oxidizing agent comprises a peroxide; a pH stabilizing system, wherein the pH stabilizing system comprises a first buffering agent and a second buffering agent; a surfactant; an optional colorant; and an optional fragrance.


