Hypohalite Compositions with DADMAC Polymer for Bleaching
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Solution Overview
Problem
Sodium hypochlorite solutions exhibit reduced stain removal and bleaching performance when used with various detergent formulations due to complex interactions, leading to inconsistent cleaning and whitening results, especially under high soil loads.
Innovation Solution
A composition comprising a homopolymer of diallyl dimethyl ammonium chloride (DADMAC) combined with a hypohalous acid or hypohalite, water, and optional adjuvants, which is free from anionic water-soluble polymers and block copolymers, enhancing compatibility with fluorescent whitening agents and improving soil removal and bleaching efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sodium hypochlorite solutions are used with various detergent formulations, then cleaning and sanitizing function is provided, but stain removal and bleaching performance is reduced due to complex interactions
Solution Approach 1:
The patent introduces a cationic polymer as an intermediary substance that mediates between sodium hypochlorite and detergent components. This polymer acts as a bridge that prevents direct harmful interactions between hypochlorite and detergent ingredients while maintaining the cleaning effectiveness of both components.
Solution Approach 2:
The patent modifies the chemical parameters of the hypochlorite solution by adjusting pH, concentration, and adding a cationic polymer. These parameter changes alter the interaction dynamics between hypochlorite and detergent components, reducing harmful reactions and improving overall compatibility and performance.
2Quantity of substance
If concentrated sodium hypochlorite solutions are delivered to consumers for dilution, then storage efficiency is improved, but interaction complexity with detergent increases
Solution Approach 1:
The patent performs preliminary action by pre-formulating the hypochlorite solution with a cationic polymer and adjusting pH before delivery to the consumer. This preliminary preparation ensures that when the consumer dilutes and uses the solution with detergent, the interactions are already optimized to minimize harmful effects.
3Illumination intensity
If fabric brighteners are added to detergent formulations, then aesthetic performance is improved, but compatibility with sodium hypochlorite is reduced
Solution Approach 1:
The cationic polymer serves as a protective intermediary that shields fabric brighteners from harmful interactions with hypochlorite. This allows the brighteners to maintain their aesthetic-enhancing function while the polymer prevents degradation from the hypochlorite component.
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 solution provides consistent and enhanced bleaching and whitening performance across different detergent formulations, improving fabric reflectance and stain removal by increasing the concentration of hypochlorite ions at stain surfaces and flocculating particulates for efficient removal.
Implementation Method 1
increasing the concentration of hypochlorite ions at stain surfaces
Implementation Method 2
flocculating particulates for efficient removal
Implementation Method 3
an oxidant selected from the group consisting of a hypohalous acid, a hypohalite
Data Source
AI summary
The invention relates to compositions and methods of treatment employing compositions including a cationic polyelectrolyte, without any anionic polyelectrolytes, so that no polyelectrolyte complex (PEC) is formed. In addition to not forming PECs, and being free of anionic water-soluble polymers (i.e., an anionic polyelectrolyte polymer that could form a PEC with the cationic polyelectrolyte), the composition is also free of random copolymers, block copolymers, coacervates, precipitates, and silicone copolymers. The composition may be a concentrate, to be diluted prior to use to treat a surface.