Liquid Detergent Surfactant Blend for Speed Washing
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Solution Overview
Problem
Conventional liquid detergent compositions fail to maintain effective stain removal performance when washing time is shortened in speed washing cycles, leading to decreased detergency and increased energy consumption.
Innovation Solution
A liquid detergent composition blending a nonionic surfactant and an anionic surfactant with specific molecular structures and an organic solvent, optimized to achieve detergency equivalent to standard washing times in reduced washing times, enhancing washing speed and performance for sebum and food stains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If washing time is shortened in speed washing cycles, then productivity is improved, but detergent composition fails to maintain effective stain removal performance
Solution Approach 1:
The patent changes the chemical parameters of the detergent composition by specifying precise molecular structures for the nonionic surfactant (Formula 1 with specific R1 groups and ethylene oxide units) and anionic surfactant (Formula 2 with specific R2 groups and alkylene oxide units), along with their blending ratios (0.3-2.0 mass ratio of anionic to nonionic). These parameter changes enable the composition to maintain detergency effectiveness in shortened washing cycles by optimizing surfactant performance characteristics.
Solution Approach 2:
The patent creates a composite detergent system by combining specific nonionic surfactants and anionic surfactants in defined proportions, along with organic solvents and water. This composite material approach leverages the synergistic effects between different surfactant types to achieve both fast washing action and effective stain removal, resolving the contradiction between washing speed and detergency maintenance.
2Use of energy by moving object
If washing time is reduced, then energy consumption is decreased, but stain removal performance deteriorates
Solution Approach 1:
The patent optimizes the molecular parameters of the surfactants, specifically the hydrocarbon chain lengths (C12-C18 for nonionic, C8-C16 for anionic) and the alkylene oxide unit compositions (ethylene oxide and propylene oxide ratios). These parameter changes enhance the surfactants' ability to rapidly emulsify and remove stains, achieving effective cleaning with reduced washing time and consequently lower energy consumption.
Solution Approach 2:
The detergent composition is designed to maintain continuous and effective surfactant action throughout the shortened washing cycle. The specific blending of nonionic and anionic surfactants ensures sustained micelle formation and stain emulsification activity, allowing the system to achieve complete stain removal even in compressed timeframes without requiring additional energy input.
3Reliability
If surfactant concentration is increased to maintain detergency, then container resin amount and transportation fuel cost increase
Solution Approach 1:
The patent optimizes the concentration and molecular characteristics of the surfactants to achieve maximum cleaning efficiency at lower concentrations. By selecting specific hydrocarbon chain lengths and alkylene oxide unit compositions, the surfactants exhibit enhanced surface activity and stain removal power per unit concentration, reducing the total quantity of detergent components needed while maintaining effective detergency.
Solution Approach 2:
The patent applies local quality by concentrating the cleaning action at the stain-detergent interface through optimized surfactant molecular structures. The specific R1 and R2 group configurations (such as linear alkyl chains and branched structures) enhance the surfactants' ability to locally interact with and emulsify stains, achieving effective cleaning with reduced overall surfactant concentration and consequently less packaging material required.
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 ensures effective stain removal even in short washing times, improving washing speed and detergency for both sebum and food stains, while reducing energy consumption and maintaining economic efficiency.
Implementation Method 1
a nonionic surfactant and an anionic surfactant with specific molecular structures... improving washing speed and detergency for both sebum and food stains
Data Source
AI summary
Provided is a liquid detergent composition for clothing which is formed by blending (a) a nonionic surfactant represented by Formula (1), (b) an anionic surfactant represented by Formula (2), a predetermined amount of (c) an organic solvent having one or more hydroxyl groups, and water in which the mass ratio (b)/(a) of the blending amount of the component (b) to the blending amount of the component (a) is 0.5 or more and 10 or less: R1O-(EO)mH (1) [in Formula (1), R1 represents a hydrocarbon group having 8 or more and 18 or less carbon atoms, EO represents an ethyleneoxy group, and m represents an average added mole number of 1 or more and 10 or less] and R2O-[(A1O)p/(EO)q]-SO3M (2) [in Formula (2), R2 represents a hydrocarbon group having 8 or more and 22 or less carbon atoms, A1O represents an alkyleneoxy group selected from an alkyleneoxy group having 3 carbon atoms and an alkyleneoxy group having 4 carbon atoms, EO represents an ethyleneoxy group, and p and q each represent an average added mole number, p is a number of 1 or more and 5 or less and q is a number of 0 or more and 10 or less. The notation "/" indicates that the (A1O)p group and the (EO)q group are bonded to each other in block in random order. M represents a cation].