Sugar-Modified Detergent Polymers for Stable Enzyme Laundry Formulas
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Solution Overview
Problem
Laundry detergents face challenges in effectively removing fatty soils and reducing greying of fabrics due to redeposition of soil during washing, with existing polymers and enzymes often lacking stability and efficacy.
Innovation Solution
Inventive detergent compositions incorporate a polymer backbone derived from an aliphatic compound with amino groups converted into secondary amines using sugars, combined with enzymes like lipases and proteases, to enhance soil removal and anti-greying performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing polymers and enzymes are used in laundry detergents, then soil removal capability is provided, but storage stability deteriorates and enzymes become deactivated
Solution Approach 1:
The patent applies preliminary action by pre-modifying the polymer backbone with sugar groups before enzyme addition. This pre-modification creates a stable foundation that prevents subsequent enzyme deactivation during storage, addressing the stability issue before it occurs
Solution Approach 2:
The patent creates a composite material system by combining modified polymers with sugar groups and enzymes. This composite structure enhances overall stability while maintaining functionality, as the sugar-modified polymer provides a stable matrix that protects enzyme activity during storage
2Reliability
If conventional polymers are used, then basic detergent function is achieved, but anti-greying performance is insufficient due to soil redeposition
Solution Approach 1:
The patent applies local quality by specifically modifying certain regions of the polymer backbone with sugar groups. This creates localized functional areas that provide enhanced anti-greying properties and prevent soil redeposition, while the rest of the polymer maintains its basic detergent functions
Solution Approach 2:
The patent changes the chemical parameters of the polymer by introducing sugar groups with specific functional groups. This parameter change modifies the polymer's interaction with soil particles, reducing redeposition and improving anti-greying performance
3Productivity
If lipase is added to support fat removal, then fatty soil removal is improved, but compatibility with builders deteriorates in liquid laundry detergents
Solution Approach 1:
The patent introduces a modified polymer as an intermediary between lipase and builders. This intermediary facilitates compatibility by mediating interactions between lipase and builder components, allowing fatty soil removal to proceed effectively without negative compatibility effects
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 compositions demonstrate improved storage stability and enhanced removal of fatty soils and greying, offering better laundry results through the use of specific polymers and enzyme combinations.
Implementation Method 1
at least 40 mol-% of said-(CH2)a—NH2 groups are converted with (b) with a sugar based on a mono-, di- or polysaccharide under formation of a secondary amino group
Data Source
AI summary
Disclosed herein are aqueous detergent compositions including:(A) at least one polymer including:(a) a backbone that is derived from an aliphatic compound with at least 4 amino groups per molecule of which at least one amino group is a —(CH2)a—NH2 group, the variable a being selected from 2 to 4, where at least 40 mol-% of the —(CH2)n—NH2 groups are converted with(b) a sugar based on a mono-, di- or polysaccharide under formation of a secondary amino group of the general formula —(CH2)a—NH—CH2—.