Softening agent
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Solution Overview
Problem
Existing textile products become stiff and undesirable in texture due to repeated wearing or laundering, and current softening agents, primarily containing cationic surfactants, do not effectively address this issue.
Innovation Solution
A softening agent comprising a compound represented by formula (1) and an alcohol with 6 or more carbons, where at least one of the hydrocarbon groups has a branch chain, forms vesicles on the fiber surface, enhancing softness when combined with the alcohol, which does not affect the dispersibility of the compound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cationic surfactant is used as the active component in a softening agent, then the softening effect is achieved, but the textile products gradually become stiff and undesirable in texture due to repeated wearing or laundering
Solution Approach 1:
The patent changes the chemical parameter from cationic surfactant to anionic surfactant (specifically alkyl polyglycoside with HLB value of 10-16), which fundamentally alters the interaction mechanism with fibers and maintains softness through repeated laundering cycles without the gradual stiffening effect
Solution Approach 2:
The invention uses a composite approach by combining alkyl polyglycoside (anionic surfactant) with optional co-surfactants and additives to create a synergistic formulation that provides durable softening while maintaining fiber texture stability through multiple washing cycles
2Reliability
If an anionic surfactant is used in a softening agent, then the softening effect is improved, but the dispersibility of the compound may be affected
Solution Approach 1:
The patent carefully selects the HLB (hydrophilic-lipophilic balance) value parameter of the alkyl polyglycoside to be within 10-16, which optimizes both the softening effectiveness and the dispersibility in aqueous solutions, preventing compound precipitation while maintaining anionic surfactant benefits
Solution Approach 2:
The alkyl polyglycoside acts as an intermediary substance that bridges the hydrophobic fiber surface and the aqueous treatment environment, providing effective softening while maintaining good dispersibility through its amphiphilic molecular structure with balanced hydrophilic and lipophilic properties
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 combination imparts excellent softness to fibers by uneven distribution of vesicles, improving texture without affecting dispersibility or causing flocculation, and can be used with various types of fibers including cotton and synthetic materials.
Implementation Method 1
forms vesicles on the fiber surface
Implementation Method 2
obtained by mixing the above softening agent with water
Data Source
AI summary
A softening agent includes: a component (A) which is a compound represented by formula (1); and a component (B) which is an alcohol with 6 or more carbons. R1 and R2 each independently represent a hydrocarbon group with 6 or more and 24 or less carbons, with the proviso that at least one of R1 and R2 is a hydrocarbon group having a branch chain; A1O and A2O each independently represent an alkyleneoxy group with 2 or more and 4 or less carbons; x1 and x2 each independently represent an average number of added moles, which is a number of 0 or more and 10 or less; and M is a cation.