Polyetheramine Grease Removal in Cold Water Detergents
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Solution Overview
Problem
Current laundry detergents fail to achieve satisfactory cleaning performance at low wash temperatures, particularly in removing grease stains in cold water without affecting the quality or production of detergents.
Innovation Solution
A cleaning composition containing 1% to 70% surfactant system and 0.1% to 10% polyetheramine, specifically formulated to enhance grease removal in cold water, comprising polyetheramines obtained by reacting a dialcohol with C2-C4 alkylene oxide and subsequent amination, which effectively removes grease stains without interfering with detergent quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surfactants and known additives (aliphatic amines, linear alkoxypropylamines) are used in laundry detergents, then detergent power is enhanced for grease removal, but satisfactory cleaning performance at low temperatures (30°C and below) cannot be achieved
Solution Approach 1:
The patent introduces a novel polyetheramine compound with specific molecular structure parameters (molecular weight 200-1000, specific formula I structure) that changes the chemical parameters of the detergent system, enabling effective grease removal at low temperatures where conventional additives fail
Solution Approach 2:
The patent creates a composite detergent formulation combining conventional surfactants with the novel polyetheramine compound (0.1-10% by weight), where the composite system achieves synergistic effects that enable low-temperature cleaning performance without compromising overall detergent quality
2Object-generated harmful factors
If high-molecular-weight branched trifunctional primary amines (e.g., Jeffamine T-5000) are used to suppress suds, then suds suppression is achieved, but grease removal performance at cold temperatures is not improved
Solution Approach 1:
The patent changes the molecular weight parameter from high (≥1000) to low (200-1000), and modifies the structural parameters to follow formula I, creating a polyetheramine that provides both cold water grease cleaning effectiveness and controlled sudsing properties, eliminating the need to choose between these opposing functions
3Ease of operation
If low molecular weight organic diamines are used in detergent compositions, then hand dishwashing applications are improved, but laundry detergent grease removal at low temperatures remains insufficient
Solution Approach 1:
The patent applies the principle of local quality by designing a polyetheramine with specific local structural features (formula I with particular R1, R2, R3, R4 groups and A1-A6 alkylene chains) that are optimized for laundry grease removal, distinguishing it from the diamines optimized for dishwashing applications
Data Source
AI summary
The present invention relates generally to cleaning compositions and, more specifically, to cleaning compositions containing a polyetheramine that is suitable for removal of stains from soiled materials.