Polymer for finishing substrates containing amino and/or amide groups

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Solution Overview

Problem

Dyed textiles using anionic dyes suffer from unsatisfactory colorfastness due to weak ionic bonds, leading to issues like fading, yellowing, and poor wash fastness, and existing colorfastness enhancers contain harmful substances like phenols and formaldehyde.

Innovation Solution

A polymer with specific repeating units and salt forms, promoting dye anchoring through hydrophobic and π-interactions, ensuring stable dye attachment and preventing fading, while being free of harmful substances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If phenolic colorfastness enhancers are used to anchor dyes to substrates, then colorfastness is improved, but yellowing occurs due to UV light exposure

Engineering Contradiction:

ImprovecolorfastnessVSAvoidyellowing

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent removes harmful phenolic components from the colorfastness enhancer formulation while retaining the essential dye-anchoring functionality through alternative polymer structures that do not cause yellowing under UV exposure

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention changes the chemical composition parameters by using specific polymer structures with controlled functional groups (carboxylic acids, sulfonic acids, phosphonic acids) that provide dye anchoring without the yellowing side effect associated with phenolic groups

Inventive Principle:

Principle #35Parameter changes

2Reliability

If phenolic colorfastness enhancers are used to improve dye anchoring, then colorfastness is improved, but harmful substances are introduced

Engineering Contradiction:

ImprovecolorfastnessVSAvoidharmful substances

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the requirement for strong dye anchoring into a beneficial function achieved through safe polymer structures, eliminating the need to use harmful phenolic substances while maintaining or improving colorfastness performance

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The invention employs composite polymer structures combining multiple functional groups (carboxylic, sulfonic, phosphonic acids) in specific ratios to achieve effective dye anchoring without relying on harmful phenolic components

Inventive Principle:

Principle #40Composite materials

3Reliability

If formaldehyde-based syntans are used as post-treatment agents, then colorfastness is improved, but environmental friendliness and health safety deteriorate

Engineering Contradiction:

ImprovecolorfastnessVSAvoidenvironmental harm

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and eliminates formaldehyde and other harmful substances from the post-treatment agent formulation, replacing them with environmentally friendly polymer structures that maintain colorfastness functionality

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention changes the chemical parameters by using polymers with controlled molecular weights, functional group compositions, and salt forms that provide effective dye anchoring without introducing harmful substances to the environment

Inventive Principle:

Principle #35Parameter changes

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 polymer achieves excellent colorfastness against perspiration, washing, steaming, and mechanical friction, with improved handling properties and no yellowing, and is suitable for various substrates including textiles and leather.

Implementation Method 1

the dye molecules are anchored to the substrate by the polymer according to the invention essentially by means of hydrophobic and π-interactions of the aromatic groups

Methodology Applied

Scientific EffectHydrophobic interaction: Hydrophobe

Implementation Method 2

the dye molecules are anchored to the substrate by the polymer according to the invention essentially by means of hydrophobic and π-interactions of the aromatic groups

Methodology Applied

Scientific Effectπ-interaction: London Dispersion Force