Liquid Dishwashing Detergent Quaternised Acrylic Copolymer Drying Speed
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid hand dishwashing detergent compositions with quaternised acrylic copolymers have poor performance in soft water conditions when not formulated with high levels of alkoxylated alcohol nonionic surfactants, leading to inadequate drying times for dishware after rinsing.
Innovation Solution
A liquid hand dishwashing detergent composition comprising a quaternised acrylic copolymer, an anionic surfactant system, and less than 3.0% alkoxylated alcohol nonionic surfactant, with a specific weight ratio of anionic to alkoxylated alcohol nonionic surfactant of less than 10:1, which improves the drying speed of dishware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high levels of alkoxylated alcohol nonionic surfactant are used, then drying speed is improved, but formulation complexity and cost increase
Solution Approach 1:
The patent changes the concentration parameter of alkoxylated alcohol nonionic surfactant from high levels to less than 3.0%, and adjusts the anionic to nonionic surfactant weight ratio to less than 10:1. This parameter optimization maintains effective drying speed while reducing formulation complexity and cost.
Solution Approach 2:
The patent creates a composite surfactant system combining anionic surfactant and alkoxylated alcohol nonionic surfactant in a specific weight ratio less than 10:1. This composite approach synergistically improves drying speed while using lower overall surfactant levels, avoiding the need for high concentrations of single surfactants.
2Device complexity
If quaternised acrylic copolymer is used without alkoxylated alcohol nonionic surfactant, then formulation simplicity is improved, but drying performance deteriorates
Solution Approach 1:
The patent optimizes the concentration parameter of alkoxylated alcohol nonionic surfactant to less than 3.0% and sets the anionic to nonionic surfactant weight ratio below 10:1. This parameter adjustment maintains formulation simplicity while restoring effective drying performance that was previously lost.
Solution Approach 2:
The patent forms a composite system where quaternised acrylic copolymer works synergistically with a low-level alkoxylated alcohol nonionic surfactant combined with anionic surfactant. This composite approach enhances drying performance without requiring high surfactant levels, balancing simplicity and effectiveness.
3Speed
If water hardness is low, then sheeting performance deteriorates, but drying speed is improved with optimized surfactant system
Solution Approach 1:
The patent adjusts the surfactant system parameters in soft water conditions, setting alkoxylated alcohol nonionic surfactant at less than 3.0% and anionic to nonionic weight ratio below 10:1. This parameter optimization compensates for low water hardness effects, maintaining both sheeting performance and improved drying speed.
Solution Approach 2:
The patent tailors the surfactant composition specifically for soft water conditions by optimizing the anionic to nonionic surfactant weight ratio to less than 10:1. This localized formulation adjustment addresses the specific challenges of soft water (reduced sheeting) while achieving the goal of faster drying speed.
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 composition significantly enhances the drying speed of dishware after rinsing, even in soft water conditions, by optimizing the surfactant system and reducing the need for high levels of alkoxylated alcohol nonionic surfactants.
Implementation Method 1
The use of quaternised acrylic copolymers for improving the speed of drying is known. Such copolymers increase the speed of drying by improving the sheeting of water off the dishware and improving beading of the water.
Implementation Method 2
the surfactant system comprises: anionic surfactant; and less than 3.0% by weight of the composition of alkoxylated alcohol nonionic surfactant
Data Source
AI summary
The need for a liquid hand dishwashing detergent, comprising a quaternised acrylic copolymer, having further improved speed of drying of dishware after hand dishwashing, is met by formulating the composition with a surfactant system which increases the efficacy of the quaternised acrylic copolymer.