Alkyl Polyglycoside Composition pH Neutralization for Perfume Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cleaning compositions with alkyl polyglycoside surfactants face challenges in stabilizing a high level of perfume, particularly in alkaline solutions, leading to perfume degradation and reduced shine and scent intensity.
Innovation Solution
A process involving a concentrated aqueous solution of alkyl polyglycoside with a pH greater than 11, followed by neutralization with a suitable agent like citric acid to achieve a pH of 7-8, stabilizes the perfume by reducing the alkalinity and incorporating a chelating agent to prevent transition metal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a high level of perfume is incorporated into an aqueous alkaline composition, then the cleaning composition provides strong cleaning power and pleasant scent, but the perfume degrades rapidly due to chemical instability
Solution Approach 1:
The patent changes the pH parameter from highly alkaline (pH 11-14) to neutral or slightly acidic (pH 7-8) by adding neutralizing agents. This parameter change stabilizes the perfume components against degradation while maintaining the cleaning effectiveness of the alkyl polyglycoside surfactant, allowing high levels of perfume to be incorporated without rapid degradation
Solution Approach 2:
The patent introduces neutralizing agents (such as citric acid, lactic acid, or other acids) as intermediary substances that mediate between the alkaline surfactant solution and the perfume components. These intermediaries neutralize the excess base, creating a stable environment that prevents perfume degradation while preserving cleaning performance
2Reliability
If more emulsifier is added to stabilize perfume in aqueous composition, then perfume stability improves, but the shine of the cleaned surface deteriorates
Solution Approach 1:
The patent changes the pH parameter to neutral or acidic levels, which eliminates the need for high levels of emulsifiers to stabilize perfume. At these pH levels, the perfume remains stable without requiring excessive emulsifying agents, thereby preserving surface shine while maintaining perfume stability
Solution Approach 2:
The patent extracts or removes the need for high levels of emulsifiers by fundamentally changing the chemical environment (pH) in which the perfume is formulated. This extraction of the emulsifier requirement allows the composition to achieve both perfume stability and surface shine without compromising either property
3Stability of the object's composition
If alkyl polyglycoside surfactant is used in highly alkaline formulation, then the surfactant maintains solubility and stability, but the composition negatively interacts with perfume components
Solution Approach 1:
The patent applies preliminary neutralization action by adding neutralizing agents before incorporating the perfume. This preliminary action creates a stable chemical environment (neutral to slightly acidic pH) that prevents harmful interactions between the surfactant and perfume components, while maintaining surfactant solubility and stability
Solution Approach 2:
The patent introduces neutralizing agents as intermediary substances that mediate between the alkyl polyglycoside surfactant and perfume components. These intermediaries neutralize the alkaline environment, preventing negative interactions and degradation of perfume components while preserving the stability and solubility of the surfactant system
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 process results in a stable, isotropic composition with improved perfume stability, enhanced cleaning performance, and pleasant scent, maintaining shine without phase separation for extended periods.
Implementation Method 1
adding a neutralizing agent to the solution resulting from step i); wherein the concentrated aqueous solution of step i) has a pH greater than about 11 as measured at 25°C
Implementation Method 2
incorporating a chelating agent to prevent transition metal interference
Data Source
AI summary
A process for making an alkaline composition comprising an alkyl polyglycoside surfactant and a perfume, the process comprises the pre-neutralization of the alkyl polyglycoside surfactant.