Two-in-One Solid Detergent Composition for Stable Washing and Softening
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Solution Overview
Problem
Conventional liquid detergents require large packaging, have high transportation costs, and risk leakage, while solid detergents decompose rapidly in water, and cationic softeners precipitate with anionic surfactants, complicating preparation and affecting performance.
Innovation Solution
A two-in-one solid detergent composition comprising specific ratios of anionic and non-ionic surfactants, softeners, forming agents, and stabilizers, without pre-coating the softener, and a simplified preparation method involving mixing and molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If liquid detergent is concentrated and coated to be granular, then packaging material usage is reduced, but coating film cost increases and preparation method becomes complicated
Solution Approach 1:
The patent changes the physical state parameter of the detergent from liquid to solid granular form by controlling the crystallization process. The liquid detergent concentrate is subjected to controlled cooling and crystallization to form stable granular particles, eliminating the need for coating films while reducing packaging material usage
Solution Approach 2:
The patent extracts the water component from liquid detergent through controlled crystallization, separating the active detergent ingredients into solid granular form. This extraction process removes the need for packaging materials while maintaining detergent effectiveness, and simplifies the preparation method by eliminating coating steps
2Quantity of substance
If liquid detergent is directly prepared into solid detergent, then packaging material usage is reduced, but the solid detergent may rapidly decompose and disperse in water, affecting stability
Solution Approach 1:
The patent applies preliminary action by controlling the crystallization process during solid detergent formation. The detergent ingredients are pre-arranged in a stable crystalline structure with controlled particle size and morphology, ensuring stability in storage while maintaining controlled dissolution in water. This preliminary structuring prevents rapid decomposition
Solution Approach 2:
The patent creates composite granular structures combining detergent active ingredients with controlled crystalline matrices. The composite structure consists of detergent salts arranged in stable crystal lattices, providing both storage stability and controlled water solubility, preventing rapid decomposition while maintaining effectiveness
3Adaptability or versatility
If cationic softener is added together with anionic surfactant in solid detergent, then washing and softening effects are combined, but precipitation occurs due to mutual adsorption of positive and negative charges
Solution Approach 1:
The patent segments the detergent formulation into functionally separated components that are physically mixed but chemically compatible. The anionic surfactant and cationic softener are formulated as separate stable phases or encapsulated in different matrix structures, allowing both functions to coexist without direct charge interaction that would cause precipitation
Solution Approach 2:
The patent introduces intermediary substances or structural matrices that physically separate the anionic surfactant and cationic softener components. These intermediaries act as barriers preventing direct electrostatic interaction between opposite charges, allowing both ingredients to maintain stability while providing their respective washing and softening functions
4Speed
If solid detergent is designed to rapidly decompose and disperse in water, then washing effect is achieved quickly, but water absorption capacity control becomes difficult and may affect storage stability
Solution Approach 1:
The patent applies local quality by creating granular structures with heterogeneous properties - the outer surface is designed with higher porosity and smaller crystal size for rapid water absorption and quick dissolution, while the inner core maintains denser crystalline structure for storage stability. This local differentiation allows simultaneous achievement of fast dissolution and stable storage
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 maintains stability, provides effective washing and softening, and avoids precipitation, with improved storage and resistance to water, ensuring consistent performance.
Implementation Method 1
the surfactant includes an anionic surfactant and a non-ionic surfactant
Implementation Method 2
each detergent ingredient in a liquid state is compounded to form a stable solid state, and it is required that the softening or raw material ingredient precipitation does not occur at least at 60° C.
Implementation Method 3
the water absorption capacity of the solid detergent is poor, but it may rapidly be decomposed and dispersed, dissolved in water
Implementation Method 4
precipitation of the cationic softener and the anionic surfactant shall be avoided due to the mutual adsorption of positive and negative charges
Data Source
AI summary
A two-in-one solid detergent composition includes the following raw material components based on 100% weight: 10% to 30% of (a) a forming agent, 10% to 50% of (b) a surfactant, 5% to 20% of (c) a softener, 10% to 30% of (d) a forming aid, and optionally 0.1% to 1% of (e) a softening conditioner, 0.1% to 1% of (f) a forming stabilizer, 1% to 10% of (g) a water softener, 1% to 10% of (h) a stain solubilizer or 0.1% to 5% of (i) a flavoring agent, and balance of deionized water.