Detergent Tablet Hardness via High MW Acrylic Polymer
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Solution Overview
Problem
Existing automatic dishwashing detergent tablets face challenges in maintaining sufficient hardness for handling and transportation while ensuring controlled dissolution during wash cycles, with issues of clumping, incomplete dissolution, and shape deformation under varying operational conditions.
Innovation Solution
Incorporating a crosslinked acrylic acid polymer with a weight average molecular weight of at least 500,000, which provides the necessary hardness and controlled dissolution, eliminating the need for conventional binders and ensuring consistent performance across different wash cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional binders are used to maintain tablet hardness, then tablet strength during handling is improved, but controlled dissolution during wash cycles deteriorates due to clumping and incomplete dissolution
Solution Approach 1:
The patent changes the molecular weight parameter of the acrylic acid polymer to at least 500,000, which fundamentally alters the polymer's physical properties. This high molecular weight creates a network structure that provides tablet hardness without the clumping issues of conventional binders, while maintaining controlled dissolution characteristics through the polymer's inherent water solubility and crosslinked structure.
Solution Approach 2:
The patent creates a composite binder system using crosslinked acrylic acid polymer that combines the hardness-providing properties of polymers with the controlled dissolution properties of water-soluble materials. The crosslinked network structure acts as a matrix that holds the detergent ingredients together while allowing controlled water penetration and dissolution during the wash cycle.
2Strength
If tablets are made harder for transportation, then handling stability is improved, but dissolution control during wash cycles deteriorates due to shape deformation
Solution Approach 1:
By increasing the molecular weight of the acrylic acid polymer to at least 500,000, the patent creates a more flexible yet strong binder matrix that can accommodate tablet shape changes during dissolution without causing deformation. This high molecular weight polymer provides a cushioning effect that maintains tablet integrity during handling while allowing controlled shape change during the wash cycle.
3Ease of manufacture
If conventional binder formulations are used, then manufacturing ease is improved, but product performance deteriorates due to clumping in high-humidity areas
Solution Approach 1:
The patent changes the molecular weight parameter of the acrylic acid polymer to at least 500,000, which fundamentally alters the polymer's hygroscopic properties. This high molecular weight creates a less hygroscopic binder that resists moisture absorption and clumping in high-humidity environments, while still maintaining ease of manufacture through simple mixing and compression processes.
Data Source
AI summary
A tablet including a dishwashing detergent composition and a crosslinked acrylic acid polymer having a weight average molecular weight (Mw) of at least 500,000.