Composition comprising hueing agent
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Solution Overview
Problem
Laundry care compositions face inefficiencies at lower temperatures and shorter wash cycles, and existing bleaching agents can damage textiles and are environmentally unfriendly, while also failing to achieve desired reddish-violet hue effects.
Innovation Solution
Aqueous laundry care compositions containing a polymeric thiophene hueing agent, specifically formulated with structures of Formula I, II, and III, which are deposited onto textile substrates during washing, providing enhanced whitening effects and extending textile life without the need for harsh chemicals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If lower temperature and shorter washing cycles are used to conserve energy, then energy consumption is reduced, but cleaning efficiency deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the washing system by introducing polymeric thiophene hueing agents with specific molecular structures (Formula I, II, III) that are designed to function effectively at lower temperatures. These agents have modified chemical properties including polyethyleneoxy and polypropyleneoxy chains that enable them to maintain whitening activity in cold water conditions, thus resolving the contradiction between energy conservation and cleaning efficiency.
2Illumination intensity
If harsh bleaching chemicals are used to achieve whitening effect, then whitening performance is improved, but textile life cycle and environmental friendliness deteriorate
Solution Approach 1:
The invention fundamentally changes the chemical nature of the whitening agent from harsh oxidizing bleaches to polymeric thiophene hueing agents with specific structures (Formula I, II, III). These agents work through a different chemical mechanism that deposits colorant molecules onto textile fibers, providing whitening and hue effects without the damaging oxidative action of traditional bleaches, thus preserving textile life and reducing environmental harm.
Solution Approach 2:
The patent converts the traditional approach of using harmful chemicals into a beneficial alternative by employing polymeric thiophene compounds that provide the desired whitening effect through deposition rather than oxidation. This transforms the whitening mechanism from a harmful process to a benign one, achieving the same visual effect without the adverse consequences.
3Illumination intensity
If traditional bleach formulations are used to mask yellowing, then whitening effect is achieved, but desired reddish-violet hue cannot be obtained
Solution Approach 1:
The patent changes the chromatic properties of the washing composition by incorporating polymeric thiophene hueing agents with specific molecular structures (Formula I, II, III) that can produce reddish-violet hues. These agents contain aromatic rings and conjugated systems that absorb and reflect light in specific wavelengths, enabling hue control that traditional bleaches cannot achieve, thus providing both whitening and color enhancement capabilities.
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 thiophene hueing agents significantly improve the whitening effect on cellulose-containing textiles compared to polyester-containing textiles, measured by whiteness index, while being environmentally friendly and bleach-free.
Implementation Method 1
Each time the textile substrate is washed, the hueing agent is deposited on the textile substrate
Data Source
AI summary
This invention relates to a laundry care composition comprising a laundry care ingredient and a polymeric thiophene hueing agent.