Concentrated Flowable Washing Agent for Stable Sachet Dosing
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Solution Overview
Problem
Existing washing agents face challenges in achieving high concentration without compromising optical and rheological properties, storage stability, and cleaning performance, particularly when packaged in water-soluble sachets, while also requiring sustainable and easy dosing solutions.
Innovation Solution
A flowable washing agent preparation comprising 2 to 7 wt.% quaternized ethoxysulfated hexamethylenediamine, 2 to 7 wt.% polyalkoxylated polyalkyleneimine, 5 to 15 wt.% alkyl ether sulfate, and less than 20 wt.% water, with a specific weight ratio of 2:1 to 1:2, along with a balanced surfactant system, ensures stability and effective cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the concentration of active ingredients in washing agents is increased, then cleaning performance is improved, but optical and rheological properties deteriorate and storage stability is affected
Solution Approach 1:
The patent changes the chemical composition parameters by introducing quaternized ethoxysulfated hexamethylenediamine with specific molecular weight (2000-8000 g/mol) and ethoxylate chain length (n=15-30), along with controlled water content (5-45 wt%), to achieve high concentration while maintaining stability
Solution Approach 2:
The patent creates a composite washing agent system combining multiple surfactants (quaternized ethoxysulfated hexamethylenediamine, polyalkoxylated polyalkyleneimine, alkyl ether sulfate) in specific ratios to achieve synergistic effects that maintain both high cleaning performance and storage stability
2Reliability
If the concentration of active ingredients in washing agents is increased, then cleaning performance is improved, but optical properties deteriorate
Solution Approach 1:
The patent optimizes optical properties by controlling water content (5-45 wt%) and the molecular weight and ethoxylate chain length of quaternized ethoxysulfated hexamethylenediamine (n=15-30), which affects the formulation's optical clarity while maintaining high active ingredient concentration
3Reliability
If the concentration of active ingredients in washing agents is increased, then cleaning performance is improved, but rheological properties deteriorate
Solution Approach 1:
The patent maintains favorable rheological properties at high concentration by optimizing the molecular weight (2000-8000 g/mol) and ethoxylate chain length (n=15-30) of quaternized ethoxysulfated hexamethylenediamine, which prevents excessive viscosity while ensuring effective cleaning
Solution Approach 2:
The patent formulates a composite system with multiple surfactants in specific ratios where polyalkoxylated polyalkyleneimine and alkyl ether sulfate work synergistically with quaternized ethoxysulfated hexamethylenediamine to maintain stable rheological properties despite high active ingredient concentration
4Ease of operation
If washing agents are packaged in water-soluble sachets for easy dosing, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent adjusts the formulation parameters including water content (5-45 wt%) and surfactant composition to ensure the washing agent remains stable and effective when packaged in water-soluble sachets, maintaining ease of dosing without compromising performance
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 solution provides a visually appealing, easily producible, and shelf-stable washing agent with enhanced cleaning performance, suitable for packaging in water-soluble sachets, while maintaining low turbidity and attractive appearance.
Implementation Method 1
The washing agent preparation contains quaternized ethoxysulfated hexamethylenediamine and polyalkoxylated polyalkyleneimine as essential components, with a weight ratio of 2:1 to 1:2, forming a surfactant system that provides washing properties
Implementation Method 2
The washing agent preparation contains 5 to 15 wt.% alkyl ether sulfate, which works synergistically with the quaternized ethoxysulfated hexamethylenediamine and polyalkoxylated polyalkyleneimine to enhance cleaning performance
Data Source
AI summary
A flowable washing agent preparation containing, based on its total weight, a) 2 to 7 wt. % quaternized ethoxysulfated hexamethylenediamine; b) 2 to 7 wt. % polyalkoxylated polyalkyleneimine obtainable by reacting polyalkyleneimines with alkylene oxides; c) 5 to 15 wt. % alkyl ether sulfate; and d) less than 20 wt. % water, wherein the weight ratio of quaternized ethoxysulfated hexamethylenediamine to polyalkoxylated polyalkyleneimine is 2:1 to 1:2, and a textile washing method using these washing agent preparations.