Detergent Composition for Textile Color Refreshment
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Solution Overview
Problem
Current detergent compositions fail to maintain color fastness and often result in the washing out of colors, especially when used with reactive dyes, due to their high reactivity and the pH-dependent interactions with textile fibers and enzymes, leading to unwanted side reactions and enzyme inhibition.
Innovation Solution
A detergent composition comprising a specific range of reactive dyes (0.82-2.8% by weight) and direct dyes (0.66-2.64% by weight), along with surfactants (0.3-20% by weight), fixers (0.1-30% by weight), and builders, which helps in maintaining color fastness and refreshing colors without impairing washing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reactive dyes are used to achieve high wash fastness through covalent bonding, then color fastness is improved, but the dye molecules react with nucleophiles in detergent solution (water, hydroxide anions, surfactant anions) causing loss of reactive dye and requiring precise pH control
Solution Approach 1:
The patent introduces a specific detergent composition formulation that acts as an intermediary system, containing reactive dyes (0.82-2.8 wt%), direct dyes (0.66-2.64 wt%), surfactants (0.3-20 wt%), and builders (0.1-30 wt%) in controlled proportions. This formulation mediates between the high reactivity of reactive dyes and the nucleophilic environment of detergent solutions, enabling color refreshment without requiring external pH adjustment while maintaining color fastness and washing performance
2Reliability
If reactive dyes are used to refresh colors, then color refreshment is improved, but enzymes in detergent bind covalently to reactive groups causing irreversible inhibition and rendering dye unusable
Solution Approach 1:
The patent changes the concentration parameters of multiple components in the detergent system. By formulating with reactive dyes at 0.82-2.8 wt%, direct dyes at 0.66-2.64 wt%, surfactants at 0.3-20 wt%, and builders at 0.1-30 wt%, the system creates a balanced chemical environment where enzyme inhibition is minimized and reactive dye utilization is optimized, achieving color refreshment without significant dye loss to enzyme inhibition
3Productivity
If detergent composition contains high reactivity nucleophiles for effective dirt breakdown, then washing performance is improved, but side reactions with reactive dye anchor groups occur causing cleavage and enzyme inhibition
Solution Approach 1:
The patent creates a composite detergent formulation combining multiple components in specific proportions: reactive dyes (0.82-2.8 wt%), direct dyes (0.66-2.64 wt%), surfactants (0.3-20 wt%), builders (0.1-30 wt%). This composite system balances the high reactivity needed for effective washing with controlled conditions that minimize harmful side reactions, allowing nucleophilic groups to break down dirt while reducing cleavage of reactive dye anchor groups and inhibition of detergent enzymes
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 maintains color fastness and enhances color refreshment, reducing color washout in subsequent washes while maintaining effective washing performance.
Implementation Method 1
Reactive dyes are characterized by their ability to bind to the fiber through covalent bonds
Implementation Method 2
the dye molecules possess one or more identical or different anchor groups. These anchor groups must be capable of forming covalent bonds with the fiber, particularly with free hydroxyl groups of cellulose molecules
Implementation Method 3
Direct dyes are dyes that are bound to the fiber through non-covalent interactions, such as van der Waals or ionic interactions
Implementation Method 4
Direct dyes are dyes that are bound to the fiber through non-covalent interactions, such as van der Waals or ionic interactions
Implementation Method 5
Essential components of detergents are anionic and non-ionic surfactants
Implementation Method 6
detergent enzymes that break down dirt, usually through hydrolytic cleavage
Implementation Method 7
Amylases, lipases, cellulases, and, most commonly, proteases are used in detergents
Data Source
Figure 1A~1B
AI summary
The invention relates to a detergent composition, a detergent portion, and the use thereof for washing and simultaneously dyeing textiles. The detergent composition comprises at least one reactive dye and at least one direct dye and is suitable for refreshing already faded colors without significantly impairing the washing result.