Neutral Dishwashing Detergent with Acidifying Particle
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Solution Overview
Problem
Traditional automatic dishwashing detergents are highly alkaline, leading to filming, spotting, and corrosion issues, which require additional ingredients to manage, increasing cost and complexity while potentially interacting with other actives and diminishing cleaning effectiveness.
Innovation Solution
A neutral automatic dishwashing detergent composition with a pH of 5 to 7.5, incorporating an acidifying particle comprising methylglycine diacetic acid or its salt, which has low hygroscopicity and high cake strength, providing excellent cleaning and finishing without the need for additional acidifying agents, and includes a sulfonated polymer for improved shine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional highly alkaline detergents are used, then cleaning power is improved, but filming and spotting occur, and glass and metal care is deteriorated
Solution Approach 1:
The patent changes the pH parameter of the detergent from highly alkaline to neutral (pH 6.5-7.5) by using aminocarboxylic acid builders instead of traditional alkaline builders, thereby eliminating filming and spotting while maintaining cleaning effectiveness
Solution Approach 2:
The patent uses a composite builder system comprising aminocarboxylic acid (MGDA) and its salts in specific ratios to achieve both neutral pH and effective cleaning, combining the benefits of different chemical forms to resolve the contradiction
2Productivity
If traditional highly alkaline detergents are used, then cleaning power is improved, but machine and dishware/tableware corrosion and deterioration occur
Solution Approach 1:
The patent changes the pH parameter from highly alkaline to neutral (pH 6.5-7.5), which eliminates corrosion and deterioration of metal articles, glass patterns, and ceramic items while preserving cleaning power through the use of aminocarboxylic acid builders
3Object-affected harmful factors
If ingredients are added to manage filming and spotting and glass and metal care, then care quality is improved, but cost and complexity increase
Solution Approach 1:
The neutral pH detergent composition provides multi-functionality by simultaneously achieving cleaning, preventing filming and spotting, and protecting glass and metal surfaces through its inherent neutral pH character, eliminating the need for separate care ingredients
Solution Approach 2:
By changing the pH parameter to neutral, the patent inherently provides glass and metal care without requiring additional specialized ingredients, thereby reducing formulation complexity while maintaining care quality
4Object-affected harmful factors
If ingredients are added to manage filming and spotting and glass and metal care, then care quality is improved, but cleaning activity is diminished
Solution Approach 1:
The neutral pH composition achieves multi-functionality where the same ingredient system provides both cleaning activity and glass/metal care, avoiding the negative interaction that occurs when separate care ingredients are added to alkaline formulations
5Productivity
If particles containing aminocarboxylic builders are used, then cleaning performance is improved, but hygroscopicity increases and mechanical and physical properties deteriorate
Solution Approach 1:
The patent changes the particle pH parameter to a narrow neutral range (6.5-7.5) and controls moisture content (3-10%), which dramatically improves particle stability, reduces hygroscopicity, and enhances mechanical properties while maintaining cleaning performance
Solution Approach 2:
The patent uses a composite particle formulation combining MGDA, its salts, and fillers in specific ratios, creating a composite material that achieves both good cleaning performance and improved physical stability with reduced hygroscopicity
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 achieves stable performance under high humidity and temperature conditions, offering enhanced cleaning and finishing results while avoiding the drawbacks of high alkalinity, such as filming and corrosion, and optimizing space in the detergent formulation.
Implementation Method 1
a neutral automatic dishwashing detergent composition... having a pH of from 5 to 7.5... The acidifying particle comprises an aminocarboxylic builder comprising methylglycine diacetic acid
Implementation Method 2
The particle for use in the composition of the invention presents very good mechanical and physical properties. The particle has a low hygroscopicity and cake strength. The detergent composition of the invention is very stable even under high humidity and temperature conditions
Data Source
AI summary
A neutral automatic dishwashing detergent composition comprising an acidifying particle comprising an aminocarboxylic builder wherein the acidifying particle has a low hygroscopicity, a cake strength of at most 20N and a pH of from about 2 to about 6 as measured in 1% aqueous solution at 20°C.