Liquid Cleaning Composition Stabilization via Xanthan Gum
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Solution Overview
Problem
Liquid detergent compositions containing phosphonates in the neutral pH range suffer from reduced storage stability due to crystal formation during extended storage periods, and they also compromise cleaning performance on minced meat.
Innovation Solution
A liquid cleaning agent with a pH of 6.5 to 8.5, containing less than 1% of homopolymers and copolymers of acrylic and methacrylic acid, 0.15 to 0.8% xanthan gum, 0.2 to 6.0% phosphonates, and 2.0 to 15% complexing agents, which are biodegradable, to maintain stability and enhance cleaning performance on minced meat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phosphonates are added to liquid detergent compositions with neutral pH, then cleaning performance on minced meat is improved, but storage stability deteriorates due to crystal formation
Solution Approach 1:
Xanthan gum is introduced as an intermediary substance that mediates between phosphonates and the detergent matrix. It forms a stabilizing network that prevents phosphonate crystallization while maintaining cleaning performance, effectively acting as a protective mediator that resolves the conflict between stability and efficacy
Solution Approach 2:
The patent changes the rheological parameters of the detergent by adding xanthan gum, which increases viscosity and creates a gel-like structure. This parameter change slows down phosphonate crystallization kinetics and maintains supersaturation, allowing the system to retain both improved cleaning performance and enhanced storage stability
2Shape
If homopolymers of acrylic acid and methacrylic acid are used as thickening agents, then viscosity is increased, but biodegradability and ecological compatibility worsen
Solution Approach 1:
The patent replaces synthetic acrylic/methacrylic acid homopolymers with xanthan gum, changing the thickening mechanism from polyacrylate-based to polysaccharide-based. This substitution maintains the desired viscosity parameter while dramatically improving biodegradability and ecological compatibility, as xanthan is a naturally occurring fermentable polysaccharide
Solution Approach 2:
Xanthan gum, being a naturally derived and biodegradable substance, replaces persistent synthetic polymers. Although xanthan may be more expensive initially, its complete biodegradability eliminates long-term environmental accumulation, effectively trading short-term material cost for long-term ecological sustainability
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 stable and effective cleaning performance on minced meat without sedimentation or phase separation over four weeks at 40°C, ensuring good biodegradability and reduced environmental impact.
Implementation Method 1
Xanthan gum is a microbial anionic heteropolysaccharide... In amounts ranging from 0.15 to 0.8 wt.%, xanthan gum can be completely dissolved and is able to stabilize the liquid cleaning agent and minimize disintegration of the mixture. In particular, the sedimentation of all other components contained in the cleaning agent can also be reduced.
Implementation Method 2
0.2 to 6.0% by weight of phosphonate(s), 2.0 to 15.0% by weight of complexing agents from the group consisting of methylglycinediacetic acid (MGDA), glutamic acid diacetic acid (GLDA) and/or their salts
Data Source
AI summary
The invention relates to cleaning agents which are liquid at 20 °C and which contain 0.2 to 6.0 wt.% of phosphonates, but neither homopolymers of acrylic acid and methacrylic acid nor copolymers or terpolymers of acrylic acid or methacrylic acid with monomers containing sulfonic acid groups.