Oligoamine-LAS Laundry Composition for Malodor Control
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Solution Overview
Problem
Current laundry wash processes often fail to effectively eliminate malodors from fabrics, and polyamines or oligoamines used for cleaning can cause discoloration such as yellowing on fabrics, necessitating a composition that provides improved malodor control without these drawbacks.
Innovation Solution
A treatment composition comprising an oligoamine with a specific structure and a surfactant system including linear alkyl benzene sulfonate (LAS) is used, where the oligoamine is present at levels of 0.01% to 3.0% by weight, and the surfactant system enhances the deposition of the oligoamine onto fabrics to inhibit malodor-causing soil breakdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If polyamines or oligoamines are used in detergent compositions to facilitate cleaning benefits such as grease removal, then cleaning performance is improved, but discoloration such as yellowing occurs on fabrics
Solution Approach 1:
The patent changes the chemical structure parameters of the oligoamine by specifying particular molecular weights (100-1200 Da) and structural formulas (Formula I with specific constraints on L, m, n, and R1-R5 groups). This structural parameter optimization enables the oligoamine to provide effective grease removal while minimizing fabric yellowing, as the specific structure allows for controlled interaction with fabrics and soils.
Solution Approach 2:
The patent creates a composite cleaning system by combining the specifically structured oligoamine (Formula I) with conventional detergent components. This composite approach leverages the unique properties of the optimized oligoamine structure to achieve synergistic cleaning performance while the specific structural constraints prevent adverse effects like fabric discoloration.
2Productivity
If conventional wash processes are used to remove soils from fabrics, then cleaning is achieved, but malodors persist or form after treatment
Solution Approach 1:
The patent optimizes the molecular weight parameters of the oligoamine within the range of 100-1200 Da and specifies particular structural parameters (Formula I constraints) to enhance malodor control. This parameter optimization allows the oligoamine to effectively address malodor issues while maintaining efficient soil removal capabilities.
Solution Approach 2:
The specifically structured oligoamine acts as an intermediary substance that mediates between the cleaning process and malodor control. Its optimized structure enables it to interact with both soils and malodor-causing compounds, providing dual functionality of soil removal and malodor prevention without requiring separate treatment steps.
3Object-generated harmful factors
If higher levels of oligoamine are used to improve malodor control, then malodor benefits increase, but fabric discoloration increases
Solution Approach 1:
The patent resolves this contradiction by changing the structural parameters of the oligoamine to the specific Formula I structure with defined constraints on L, m, n, and R1-R5 groups. This structural parameter change enables effective malodor control at lower concentrations (0.01-3.0% by weight) while minimizing fabric yellowing, eliminating the need to use high concentrations that would cause discoloration.
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 combination of oligoamine and LAS surfactant provides significant malodor control benefits by chelating metal ions like copper, preventing the release of volatile malodorous compounds and reducing fabric discoloration, thereby improving the overall cleaning performance.
Implementation Method 1
the oligoamine can chelate and sequester copper ions in a treatment liquor, and thereby inhibit the release of such malodorous compounds
Implementation Method 2
deposition of the oligoamines onto a target surface may be aided by the LAS surfactant, for example through hydrophobic interactions
Data Source
AI summary
Treatment compositions that include a surfactant system and an oligoamine, the surfactant system including linear alkyl benzene sulfonate. Related methods of use and preparation of such compositions.