Ternary Solvent Detergent Composition for Storage Stability
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Solution Overview
Problem
Existing detergents face challenges with storage stability under varying temperatures, leading to issues like clouding, precipitation, and phase separation, which are exacerbated by increasing solvent fractions to enhance concentration, contradicting the goal of convenient handling and sustainability.
Innovation Solution
A flowable detergent preparation using a specific solvent system comprising ethanol, 1,2-propanediol, and glycerol in a weight ratio of 0.9 to 5.0, with optional additives like surfactants, enzymes, and other solvents, ensuring good storage life and cleaning performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the solvent fraction of liquid detergent is increased to counteract physical instabilities, then storage stability is improved, but concentration is reduced
Solution Approach 1:
The patent applies parameter changes by optimizing the specific composition ratio of organic solvents (ethanol, 1,2-propanediol, and glycerol in a weight ratio of 0.9 to 5.0) and adjusting the water content (5-20 wt.%) to achieve a balance between storage stability and concentration. This specific parameter optimization allows the detergent to maintain physical stability without excessive solvent dilution.
2Reliability
If the proportion of organic solvents is increased to improve storage stability, then physical instabilities are reduced, but the goal of concentration is contradicted
Solution Approach 1:
The patent uses a composite solvent system combining three different organic solvents (ethanol, 1,2-propanediol, and glycerol) with water. This composite approach leverages the complementary properties of each component: ethanol provides good solubility, 1,2-propanediol enhances stability, and glycerol contributes to viscosity control and stability. The synergistic effect allows achieving storage stability with lower total organic solvent content.
Solution Approach 2:
The patent optimizes the weight ratio of ethanol and 1,2-propanediol to glycerol between 0.9 and 5.0, and controls water content at 5-20 wt.%, to achieve the desired balance between stability and concentration without excessive organic solvent use.
3Ease of operation
If miniaturization of film pouches is implemented to simplify handling and improve sustainability, then consumer acceptance and sustainability are improved, but manufacturing complexity may increase
Solution Approach 1:
The detergent composition is formulated with controlled viscosity parameters through the specific solvent system (ethanol, 1,2-propanediol, glycerol in weight ratio 0.9 to 5.0), ensuring the product flows appropriately for miniaturized packaging while maintaining stability. This parameter optimization enables successful miniaturization.
Data Source
AI summary
A flowable detergent preparation containing, based on the total weight thereof, a) ethanol and 1,2-propanediol and glycerol in a total amount of 5 to 25 wt. %; wherein the weight ratio of ethanol and 1,2-propanediol to glycerol is 0.9 to 5.0, and washing method using this detergent preparation.