Liquid Rinse Aid Surfactant Blend Drying
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Solution Overview
Problem
Current dishwashing detergents and rinse aids fail to effectively dry dishes, particularly plastic and metal surfaces, leading to water spots and increased energy consumption due to prolonged drying cycles, and multifunctional compositions compromise drying performance.
Innovation Solution
A liquid rinse aid composition featuring a blend of specific non-ionic surfactants, including a C9/11 oxoalcohol and a C10 fatty alcohol, in a binary mixture ratio, along with co-surfactants, hydrotropes, and organic acids, which enhances drying performance on difficult surfaces without increasing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard rinse aids are used, then water runs off surfaces well, but drying performance is poor on plastic and metal surfaces
Solution Approach 1:
The patent changes the chemical parameters of the surfactant blend by specifying precise chain lengths (C9-11 oxoalcohol with 8-9 methylene groups, C10 fatty alcohol with 8-9 methylene groups) and alkoxylation degrees (5-6 moles EO/PO for oxoalcohol, 5-6 moles EO for fatty alcohol). These parameter changes optimize the surfactant's interaction with plastic and metal surfaces, improving drying performance without requiring complex formulation approaches.
Solution Approach 2:
The patent creates a composite surfactant system by combining two specific non-ionic surfactants (oxoalcohol and fatty alcohol alkoxylates) in defined ratios (1:5 to 5:1 by weight). This composite approach leverages the complementary properties of both surfactants to achieve superior drying performance on difficult surfaces like plastic and metal, while maintaining formulation simplicity.
2Reliability
If drying phase is extended or temperature increased, then drying performance improves, but energy consumption increases
Solution Approach 1:
The surfactant blend enables the drying process to be more self-effective by significantly improving water run-off and surface drying through its chemical composition. The optimized surfactant molecules actively promote drying on plastic and metal surfaces, reducing the need for additional energy input or extended drying phases, thereby lowering overall energy consumption while maintaining high drying performance.
3Adaptability or versatility
If multifunctional compositions are used, then product consolidation is achieved, but drying performance deteriorates
Solution Approach 1:
The patent applies local quality by focusing the surfactant blend's optimized properties specifically on the drying function within the multifunctional composition. The precise chain lengths and alkoxylation degrees are tailored to enhance drying performance on plastic and metal surfaces, ensuring that even in a consolidated multifunctional product, the drying function maintains high reliability without being compromised by other functions.
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 surfactant blend significantly improves drying efficiency on plastic and metal surfaces, allowing for reduced drying temperatures and shorter cycle times, meeting energy-saving standards while maintaining or exceeding drying performance standards.
Implementation Method 1
The aim of the surfactants in these compositions consists in influencing the interfacial tension of the water in such a way that it can run off from the ware in the thinnest possible, coherent film so that no water drops, streaks or films are left behind during the subsequent drying process
Implementation Method 2
The addition of liquid or solid rinse aid ensures that the water runs off from the ware as completely as possible, meaning that the wide variety of surfaces are residue-free and shiny at the end of the wash programme
Data Source
AI summary
Suggested is a liquid rinse aid composition, comprising a blend of two non-ionic surfactants having simultaneously good rinsing, drying, streak-free, anti-filming and anti-spotting performance on substrates and also showing compared to the state of the art a superior water run-off behaviour.