Etheramine Mixture for Low-Temperature Grease Removal
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Solution Overview
Problem
Conventional laundry detergents fail to achieve satisfactory grease stain removal at low temperatures, such as 30°C or below, while also preserving fabric whiteness and not impacting clay cleaning negatively.
Innovation Solution
A mixture of etheramines with specific molecular structures and weight ranges, combined with an acid, is used to enhance detergent performance at low temperatures, comprising etheramines of formula (I) and (II), which are synthesized by reacting dialcohols with alkylene oxides and then aminated with ammonia, providing improved grease removal without affecting fabric whiteness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional amine compounds are used to remove grease stains, then grease removal is improved, but fabric whiteness is negatively impacted
Solution Approach 1:
The patent changes the chemical structure parameters of the amine compound by specifying precise molecular weight ranges (250-700 g/mol), specific formulas (I and II) with defined alkylene groups and amino groups, and controlled polyethylene/polypropylene oxide ratios. These parameter changes result in etheramines that effectively remove grease stains while being free from the whiteness-degrading effects of conventional amine compounds.
2Loss of energy
If conventional detergents are used at low temperatures, then energy consumption is reduced, but grease stain removal is insufficient
Solution Approach 1:
The patent changes the chemical parameters of the detergent composition by incorporating etheramines with specific molecular weights (250-700 g/mol) and controlled degrees of polymerization (x+y=3-100). These parameter changes enable the detergent to maintain high grease removal efficacy at low temperatures (30°C or below) without requiring high energy input for heating.
3Object-generated harmful factors
If high molecular weight branched amines are used to suppress suds, then suds control is improved, but cleaning performance at cold temperatures deteriorates
Solution Approach 1:
The patent changes the molecular structure parameters by defining etheramines with molecular weights of 250-700 g/mol, specific linear or branched alkylene configurations, and controlled amino group positions (primary, secondary, or tertiary). These parameter changes create a compound that provides effective suds control while maintaining superior cleaning performance at cold temperatures, unlike high molecular weight branched amines.
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 etheramine mixture effectively removes grease stains at cold water temperatures, outperforming conventional detergents in stain removal index and maintaining fabric whiteness, while being suitable for use in laundry and other cleaning compositions.
Implementation Method 1
the etheramines contribute to the improvement of the washing performance of the detergent at lower temperatures
Data Source
AI summary
This invention relates to etheramines based on dialcohols, wherein the etheramines comprise at least three linear or branched C4-alkylene groupsand a process for the manufacture of these etheramines.