Liquid Laundry Composition for Enzyme and Polymer Storage Stability
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Solution Overview
Problem
Laundry detergents face challenges in maintaining storage stability, especially when containing hygroscopic ingredients like enzymes, and there is a need to reduce non-biodegradable components while ensuring effective cleaning performance.
Innovation Solution
A liquid laundry composition comprising triethanolamine, citrate, and a water-soluble polymer with ester groups, optionally with aliphatic or cycloaliphatic amines, to enhance stability and performance, using specific ratios and counterions to stabilize the composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If biodegradable polymers are used to replace non-biodegradable components, then environmental compatibility is improved, but storage stability deteriorates due to premature degradation
Solution Approach 1:
The patent introduces a stabilization system comprising a polyamine (with specific structural features: at least one primary amino group, at least one secondary amino group, and specific carbon chain lengths) as an intermediary substance. This polyamine acts as a mediator that protects biodegradable polymers from premature degradation during storage while maintaining their environmental compatibility. The polyamine stabilizes the polymer structure through specific molecular interactions, allowing the biodegradable polymer to remain stable during storage but still degrade effectively during use.
Solution Approach 2:
The patent modifies the chemical parameters of the stabilization system by specifying precise structural characteristics of the polyamine (molecular weight range, amino group types, carbon chain lengths) and its concentration relative to the biodegradable polymer (specific molar ratios). These parameter changes optimize the balance between storage stability and biodegradability, enabling the system to maintain polymers stable during storage while preserving their environmental compatibility for degradation after use.
2Productivity
If enzymes are added to enhance cleaning performance, then cleaning efficacy is improved, but storage stability deteriorates due to enzyme deactivation
Solution Approach 1:
The polyamine stabilization system serves as an intermediary protective environment for enzymes. The specific polyamine structure (with primary and secondary amino groups, specific molecular weight and carbon chain length) creates a stabilizing matrix that protects enzyme structures from deactivation during storage. This intermediary system allows enzymes to maintain their cleaning efficacy while being protected from premature deactivation during storage periods.
3Ease of operation
If liquid detergent formulations are used to improve ease of operation, then application convenience is improved, but storage stability deteriorates due to hygroscopic ingredient absorption
Solution Approach 1:
The polyamine-citrate stabilization system acts as an intermediary protective environment that counteracts the hygroscopic nature of liquid detergent ingredients. The specific polyamine structure and its interaction with citrate create a stabilized matrix that prevents excessive water absorption during storage, thereby maintaining the liquid formulation's convenience for application while improving storage stability.
Data Source
AI summary
Disclosed herein is a composition including(A) at least one combination of compounds including(α) triethanolamine, and(β) citrate,and(B) at least one water-soluble polymer that bears at least two ester groups per molecule.