Anionic Polyester Soil Release Polymer Compatibility
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Solution Overview
Problem
Anionic soil release polymers have compatibility issues with cationic polymers when formulated together, leading to suboptimal cleaning and care performance in fabric and home care products.
Innovation Solution
A fabric and home care composition comprising an anionic polyester soil release polymer and a polysaccharide-based cationic polymer, specifically designed to address compatibility issues and enhance both cleaning and care performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anionic soil release polymer and cationic polymer are formulated together, then cleaning performance and care performance are improved, but compatibility issues occur between the polymers
Solution Approach 1:
The patent introduces a specific anionic soil release polymer with defined structural parameters (formula I and formula II units with specific molar ratios and chain lengths) that acts as an intermediary between the cationic polymer and the fabric/soil system. This specific polymer structure mediates the interaction to achieve both cleaning and care benefits while maintaining compatibility.
Solution Approach 2:
The patent resolves the compatibility issue by precisely controlling the structural parameters of the anionic polymer, including the molar ratio of formula I to formula II units (specifically 1:1), the chain length parameter n (2-12), and the degree of polymerization x (30-200). These parameter changes enable the polymer to function effectively without compromising compatibility.
2Reliability
If soil release polymer deposits on fabric surface, then soil adhesion is reduced and cleaning performance is improved, but fabric surface properties are altered
Solution Approach 1:
The anionic soil release polymer provides localized modification of the fabric surface by depositing specifically on the fabric fibers. The polymer creates a soil-release active layer on the fabric surface while maintaining the bulk fabric properties, achieving soil release performance without fundamentally altering the overall fabric composition.
Solution Approach 2:
The invention creates a composite structure on the fabric surface where the anionic soil release polymer forms a functional coating layer on top of the fabric fibers. This composite material approach allows the fabric to maintain its inherent properties while gaining enhanced soil release capabilities through the deposited polymer layer.
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 composition effectively reduces soil adhesion to fabric surfaces, controls malodor, and deposits conditioning actives, while maintaining excellent cleaning and care performance.
Implementation Method 1
Anionic soil release polymers typically have compatibility issues with cationic polymers when they are formulated together. The present invention addresses the problem by providing a fabric and home composition comprising cationic polymer and a specific anionic soil release polymer.
Data Source
AI summary
The present invention relates to a fabric and home care composition containing a fabric and home care ingredient, an anionic polyester soil release polymer and a polysaccharide-based cationic polymer.