Two-Phase Dishwashing Composition with Dissolving Detergent Particles
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Solution Overview
Problem
Existing automatic dishwashing compositions face issues with unwanted filming on surfaces and poor storage stability due to water-insoluble coatings on solid particles, which are not effectively addressed by previous solutions.
Innovation Solution
A two-phase cleaning composition with visibly distinct detergent particles that are solid under storage conditions but dissolve during washing, utilizing surfactants with a Krafft temperature of 30 to 55 °C, ensuring high solubility and minimal sedimentation, and incorporating rheological modifiers for stability and pourability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If solid particles are added to liquid cleaning composition to improve aesthetic appearance and visualize cleaning performance, then consumer acceptance improves, but unwanted filming occurs on surfaces due to water-insoluble coatings releasing into wash solution
Solution Approach 1:
The patent changes the solubility parameter of the coating by selecting water-soluble polymers (such as polyvinyl alcohol, cellulose derivatives, or carboxymethyl cellulose) instead of water-insoluble coatings. This parameter change ensures the coating dissolves during washing, eliminating filming while maintaining aesthetic appearance and particle visibility in the liquid composition.
Solution Approach 2:
The patent uses composite particles consisting of an abrasive core (such as silica or alumina) combined with a water-soluble polymer coating. This composite structure provides both the cleaning effectiveness of the abrasive and the solubility benefits of the polymer coating, preventing harmful filming while maintaining aesthetic appeal.
2Illumination intensity
If solid particles are suspended in liquid cleaning composition to serve as visible detergent particles, then product appearance improves, but storage stability deteriorates due to particle sedimentation
Solution Approach 1:
The patent modifies the surface properties of particles by coating them with hydrophilic polymers, changing their interaction with the liquid medium. This parameter change increases suspension stability by reducing particle aggregation and improving compatibility with the liquid phase, thereby preventing sedimentation while maintaining visual appearance.
Solution Approach 2:
The patent introduces water-soluble polymer coatings as intermediaries between the hydrophobic abrasive particles and the aqueous liquid medium. These coating layers improve wetting and suspension characteristics, acting as a mediator that prevents particle aggregation and sedimentation while maintaining the visual visibility of particles in the composition.
3Reliability
If particles are used in liquid ADW compositions to provide visible active component, then cleaning performance visualization improves, but compatibility with other ingredients deteriorates
Solution Approach 1:
The patent changes the chemical parameter of the coating to be water-soluble and chemically inert, allowing the particles to coexist with various cleaning ingredients (enzymes, surfactants, builders) without incompatibility issues. This enables the visible particles to maintain their function across different formulation compositions.
Solution Approach 2:
The patent creates homogeneous water-soluble polymer coatings on particle surfaces that are compatible with all other ingredients in the liquid cleaning composition. This homogeneity in solubility and chemical nature across all components prevents precipitation, aggregation, or degradation reactions, ensuring stable coexistence of particles with other formulation ingredients.
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 excellent cleaning performance, aesthetic appeal, and long-term stability with reduced sedimentation and improved pourability, maintaining transparency and preventing solid residues that could affect cleaning outcomes.
Implementation Method 1
the detergent particles comprise one or more surfactants having a Krafft temperature of 30 to 55 °C
Implementation Method 2
the Krafft temperature within the meaning of the present invention defines the minimum temperature from which micelle formation takes place
Data Source
AI summary
The present invention generally relates to two-phase cleaning compositions with visibly distinct detergent particles. In particular, the present invention relates to a two-phase cleaning composition comprising a liquid phase and visibly distinct detergent particles dispersed in the liquid phase, the use of said cleaning composition in automatic dishwashing, an automatic dishwashing method using said cleaning composition and a container containing said cleaning composition.