Efflorescent Coated Bleach and Enzyme Granulates for Dishwashing Detergent Stability
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Solution Overview
Problem
Automatic dishwashing detergents face stability issues due to temperature changes, leading to caking and handling problems, and existing solutions often compromise performance under different temperature conditions.
Innovation Solution
A dishwashing detergent composition comprising at least 9% coated bleach particles with an efflorescent material coating and enzyme granulates containing at least 30% efflorescent material, specifically sodium sulphate, which maintains stability and performance across various temperature cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If powder is protected from moisture under cold conditions, then caking is prevented, but under hot conditions the same protection causes handling problems
Solution Approach 1:
The patent uses efflorescent materials that change their hydration state based on temperature and humidity conditions. These materials absorb moisture under cold conditions to prevent caking, then release it under hot conditions to maintain handling properties, dynamically adjusting their properties to resolve the contradiction between stability and ease of operation.
Solution Approach 2:
The efflorescent materials in the detergent composition automatically regulate moisture content based on environmental conditions without external intervention. They self-adjust by absorbing or releasing water vapor, providing both protection against caking and maintaining handling properties through their inherent hygroscopic characteristics.
2Stability of the object's composition
If efflorescent material is used to prevent caking under cold conditions, then storage stability is improved, but enzyme activity may be affected under hot conditions
Solution Approach 1:
The efflorescent material acts as an intermediary between the enzyme granulates and the external environment. It provides a protective microenvironment that buffers temperature and humidity fluctuations, allowing the enzyme to maintain activity while the outer material handles moisture regulation, thus resolving the contradiction between storage stability and enzyme reliability.
Solution Approach 2:
The detergent composition has different functional zones: the efflorescent material on the outer surfaces handles moisture regulation and storage stability, while the inner enzyme granulates are protected in a microenvironment that maintains their activity. This spatial differentiation of functions resolves the contradiction between storage stability and enzyme reliability.
3Reliability
If high level of efflorescent material is used in both bleach particles and enzyme granulates, then temperature cycle resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies the same efflorescent material strategy to both bleach particles and enzyme granulates, merging the moisture protection approach across different functional components. This unified strategy simplifies the overall manufacturing process compared to developing separate protection systems for each component, while achieving superior temperature cycle resistance.
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 provides excellent cleaning performance while being resistant to temperature changes, preventing caking and ensuring stable storage and handling, even under extreme conditions.
Implementation Method 1
the coating of the bleach particles and the enzyme-containing granulates comprise an efflorescent material
Implementation Method 2
Some anhydrous materials (hygrocopic materials) have a strong tendency to absorb water vapour from the air, thus becoming hydrated compounds
Implementation Method 3
the hydrated material forming a crystal bridge between particles reverts to the anhydrous (or less hydrated) form
Implementation Method 4
moisture in the air within the granules can condense at particles contact points and can give rise to hydrated crystal bridges
Data Source
AI summary
An automatic dishwashing detergent composition comprising by weight of the composition: a) at least 9% of coated bleach particles the particles having a coating comprising at least 5% by weight of the particle of an efflorescent material; b) at least 0.5% of granulates containing active enzyme wherein the granulates comprise efflorescent material.