TAED TriAED Detergent Additive Hydrolytic Stability
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Solution Overview
Problem
Tetraacetylethylenediamine (TAED) and triacetylethylenediamine (TriAED) lose effectiveness in liquid detergent formulations due to hydrolysis when used in aqueous systems, as they react to form less effective N,N′ diacetylethylenediamine (DAED), making them unsuitable for use in liquid detergents without modification.
Innovation Solution
A detergent additive comprising one or both of tetraacetylethylenediamine and triacetylethylenediamine, combined with polyvinyl butyral, which enhances hydrolytic stability and is prepared by dissolving polyvinyl butyral in a solvent, suspending the active, and spray-drying the mixture to create a dry powder with encapsulating efficiency, allowing controlled release during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TAED or TriAED is used in liquid detergent formulations, then the detergent can provide bleaching and microbial control functions, but the active ingredients undergo hydrolysis and lose effectiveness
Solution Approach 1:
The patent introduces an intermediary substance (polymer or surfactant) that acts as a protective barrier between the TAED/TriAED active ingredients and the aqueous environment. This intermediary prevents direct contact between the active and water, thereby preventing hydrolysis while still allowing the detergent to function effectively in liquid formulation.
Solution Approach 2:
The patent modifies the physical or chemical parameters of the detergent formulation by adjusting pH, concentration, or adding stabilizing agents to prevent hydrolysis of TAED/TriAED. By changing these parameters, the formulation maintains the effectiveness of the active ingredients while preserving their hydrolytic stability in aqueous environments.
2Ease of manufacture
If TAED is used without modification, then the formulation process is simple, but the product is not suitable for aqueous detergent formulations
Solution Approach 1:
The patent segments the detergent formulation into distinct functional components: the active ingredients (TAED/TriAED), the intermediary protective substance (polymer/surfactant), and the aqueous detergent base. This segmentation allows each component to perform its specific function while maintaining overall compatibility with liquid detergent formulations.
Solution Approach 2:
The patent creates a universal detergent formulation that can accommodate multiple functions (bleaching, microbial control, and stability) within a single liquid product. The modified formulation serves both as an effective detergent and as a stable vehicle for the active ingredients, making it adaptable to various detergent application scenarios.
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 additive provides enhanced long-term stability and controlled release of the active ingredients in aqueous detergent formulations, maintaining effectiveness as a peroxy bleaching activator and microbial control agent, extending shelf life and improving performance in washing machines.
Implementation Method 1
A detergent additive comprising one or both of tetraacetylethylenediamine and triacetylethylenediamine, combined with polyvinyl butyral, which enhances hydrolytic stability
Implementation Method 2
spray-drying the reaction mixture
Data Source
AI summary
A detergent additive comprising an active, the active comprising one or both of tetraacetylethylenediamine and triacetylethylenediamine; and polyvinyl butyral. A method of preparing a detergent additive comprising providing a solvent to a reaction mixture; providing polyvinyl butyral to the reaction mixture; providing an active to the reaction mixture, the active comprising one or both of tetraacetylethylenediamine and triacetylethylenediamine; mixing the reaction mixture; and spray-drying the reaction mixture.