Aprotic Solvent Stabilization of Hydrolytically Unstable Benefit Agents
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Solution Overview
Problem
Benefit agents in compositions are susceptible to hydrolysis during storage, leading to breakdown and instability, which affects consumer experience by providing unpredictable performance.
Innovation Solution
Incorporating an aprotic solvent with a molecular weight between 70 and 250, specifically propylene glycol carbonate, to stabilize benefit agents with nucleophilically or hydrolytically unstable bonds, often used in conjunction with detergent adjunct ingredients in detergent compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If benefit agents are used in compositions, then consumer desired benefits are provided, but the benefit agents are susceptible to hydrolysis by other components present in the product
Solution Approach 1:
The patent introduces an aprotic solvent as an intermediary substance that mediates between the benefit agent and other composition components. The aprotic solvent creates a protective environment that prevents harmful hydrolysis reactions while allowing the benefit agent to maintain its function. This resolves the contradiction by adding a mediating substance that blocks the harmful interaction without eliminating the benefit agent's effectiveness.
2Stability of the object's composition
If benefit agents are stable during storage, then consistent performance is provided, but benefit agents often break down upon storage
Solution Approach 1:
The patent changes the chemical environment parameters by introducing an aprotic solvent with specific properties (low water content, specific polarity). This parameter change in the composition's chemical environment stabilizes the benefit agent's molecular structure during storage, preventing hydrolysis and ensuring consistent performance characteristics throughout the product's shelf life.
3Reliability
If aprotic solvent is added to stabilize benefit agents, then hydrolysis is prevented, but composition formulation complexity increases
Solution Approach 1:
The patent selects aprotic solvents that serve multiple functions: they stabilize benefit agents by preventing hydrolysis, maintain product viscosity, and are compatible with other composition components. This multi-functionality reduces the need for additional separate stabilizing agents, thereby limiting the increase in formulation complexity while achieving the desired stability improvement.
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 use of aprotic solvents significantly improves the stability of benefit agents, ensuring consistent performance across the product's lifetime by preventing hydrolysis, thus enhancing consumer satisfaction.
Implementation Method 1
the stability of benefit agents having at least one hydrolytically unstable bond in compositions can be improved by the presence of specific solvents, namely aprotic solvents
Data Source
AI summary
Composition comprising a benefit agent and an aprotic solvent, wherein the benefit agent comprises at least one nucleophilically and/or hydrolytically unstable bond.