Unit-Dose Dishwashing Detergent Composition for Grit Prevention
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Solution Overview
Problem
Automatic dishwashing detergents often result in grit formation on washed items, which is difficult to remove and negatively impacts shine, especially in unit dose forms and heavily soiled loads, with the mechanism of grit formation not well understood.
Innovation Solution
An automatic dishwashing detergent composition in unit dose form containing a high level of starch degrading enzyme, preferably alpha-amylase, combined with protease and lipase, along with anti-redeposition agents and sulfonated polymers, to prevent grit formation and enhance cleaning and finishing results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional automatic dishwashing detergents are used, then cleaning function is provided, but grit formation occurs on washed items
Solution Approach 1:
The patent changes the concentration parameter of starch degrading enzymes from conventional levels to high levels (at least 0.2 mg active enzyme per gram of composition). This parameter change enables effective prevention of grit formation while maintaining cleaning function, resolving the contradiction between cleaning effectiveness and grit prevention
Solution Approach 2:
The patent creates a composite detergent composition combining multiple enzyme types (starch degrading enzymes, proteases, lipases) with anti-redeposition agents and sulfonated polymers. This composite approach synergistically prevents grit formation while maintaining comprehensive cleaning performance across different soil types
2Object-generated harmful factors
If high level of starch degrading enzyme is used, then grit formation is prevented, but product complexity increases
Solution Approach 1:
The patent designs enzyme compositions that perform multiple functions: starch degrading enzymes prevent grit formation, while proteases and lipases simultaneously clean protein and fat soils. This multi-functionality reduces the need for separate specialized additives, managing formulation complexity while achieving comprehensive performance
Solution Approach 2:
The patent optimizes enzyme concentration parameters to achieve effective grit prevention at specific thresholds (at least 0.2 mg active starch degrading enzyme per gram). By defining clear parameter ranges, the patent manages formulation complexity through quantifiable specifications rather than open-ended composition requirements
3Reliability
If multiple enzyme types are combined, then cleaning performance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent incorporates enzymes in preliminary stabilized forms suitable for unit dose packaging, with starch degrading enzymes, proteases, and lipases pre-formulated to maintain stability during storage and dissolution. This preliminary preparation simplifies the manufacturing process by eliminating the need for complex post-formulation enzyme stabilization steps
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 effectively prevents grit formation, improves cleaning and finishing, and provides better shine on washed items even under stressed conditions, reducing filming and spotting, by suspending soil particles and preventing recombination.
Implementation Method 1
comprising a high level of active starch degrading enzyme... A good performance in terms of grit prevention has been found when using an alpha-amylase
Implementation Method 2
The results can be further improved by adding a protease enzyme to the composition
Implementation Method 3
by suspending soil particles and preventing recombination
Data Source
AI summary
An automatic dishwashing detergent composition in unit dose form wherein the composition comprises at least about 0.2 mg of active starch degrading enzyme per gram of composition and wherein the weight of the composition is less than about 25 grams.