Polymeric Dyes for Detergent Staining via Segmentation
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Solution Overview
Problem
There is a need for dyes that effectively stain detergents without transferring the stain to textiles during the cleaning process, as existing reactive dyes often fail to minimize staining on textiles.
Innovation Solution
A colorant comprising a poly(amidoamine) compound with specific chromophore groups and reactive dye moieties, formed through a Michael-Addition and subsequent polycondensation process, is used to create a polymeric dye that exhibits reduced staining properties on textiles while maintaining effective staining of detergents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If reactive dyes are used for staining detergents, then staining properties for detergents are improved, but staining on textiles increases
Solution Approach 1:
The invention segments the dyeing function by using polymeric dyes where the chromophore is separated from the reactive group through a spacer. The polymer structure (poly(amidoamine) or polyethyleneimine) provides multiple binding sites that anchor the dye to the detergent, while the chromophore groups remain available for staining. This segmentation allows the dye to selectively stain the detergent without transferring to textiles, as the polymer backbone acts as a carrier that remains on the detergent surface.
Solution Approach 2:
The invention creates a composite structure by combining reactive dye molecules with polymeric carriers (poly(amidoamine) or polyethyleneimine). This composite polymeric dye integrates the staining function of the chromophore with the binding function of the polymer, resulting in a material that stains detergents effectively while minimizing textile staining. The composite structure allows simultaneous achievement of high detergent staining and low textile staining.
2Object-affected harmful factors
If polymeric dyes based on poly(oxyalkylene) or polyether polyols are used, then staining on textiles is reduced, but staining properties for detergents may be insufficient
Solution Approach 1:
The invention changes the chemical parameters of the polymeric carrier by using poly(amidoamine) or polyethyleneimine structures with specific functional groups (amido groups, primary amino groups, secondary amino groups). These parameter changes in the polymer structure provide enhanced binding affinity for the reactive dye groups while maintaining low textile staining. The specific molecular weight range (1,000 to 1,000,000 g/mole) and functional group composition are optimized to balance detergent staining and textile non-staining properties.
3Quantity of substance
If dyes with high reactivity are used to ensure effective staining, then staining on hard surfaces and skin increases
Solution Approach 1:
The polymeric carrier (poly(amidoamine) or polyethyleneimine) acts as an intermediary between the reactive dye and the substrate. The polymer binds the reactive dye through covalent or strong non-covalent interactions, controlling the release and interaction of the chromophore with substrates. This intermediary function allows the dye to stain detergents effectively while the polymer structure prevents excessive reactivity with hard surfaces and skin, reducing unwanted staining in these areas.
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 polymeric dye demonstrates good staining properties for detergents while showing low staining on textiles, reducing or eliminating staining on hard surfaces, skin, and equipment, and is compatible with various pH ranges and systems, making it suitable for non-ink applications like cleaning agents.
Implementation Method 1
the poly(amidoamine) is the reaction product of a branched or non-branched amine with an acrylate or methacrylate in a Michael-Addition
Implementation Method 2
wherein the product formed in said Michael-Addition subsequently is subjected to polycondensation to afford said poly(amidoamine)
Data Source
AI summary
Colorant of formula (I):whereinA signifies a monovalent organic residue comprising a chromophore group;B signifies a bivalent organic residue selected from the class consisting of aromatic, heteroaromatic, cycloaliphatic and aliphatic groups containing from 2 to 10 carbon atoms, optionally substituted;andC signifies the residue of compound comprising at least one amido group, one primary amino group, and one secondary amino group, wherein C is linked to B via a nitrogen atom of an amino group, wherein said compound is a poly(amidoamine).