Fiber Treatment Ester Composition for Stable High-Speed Spinning
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Solution Overview
Problem
Conventional fiber treatment agents fail to provide a lubricating component with a low melting point, good heat resistance, and stable emulsion properties, leading to issues such as fiber breakage and reduced lubricating performance during high-speed spinning.
Innovation Solution
An ester compound represented by the formula R1-O-((EO)l-(PO)m)-(EO)n-CO-R2, where R1 is a hydrocarbon group and R2 is an alkyl or alkenyl group, is used as a fiber treatment agent, with specific molecular structure and reaction steps to achieve a low melting point and improved emulsion stability, allowing for uniform coating and easy handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lubricating components (paraffin hydrocarbons, oleyl oleate, etc.) are used, then lubricating performance is provided, but heat resistance is poor causing decomposition and fuming
Solution Approach 1:
The patent changes the chemical structure parameters of the lubricating component by using ester compounds with specific molecular weight ranges (500-2000) and specific structural formulas, transforming the molecular characteristics to achieve both low melting point and high heat resistance simultaneously
Solution Approach 2:
The patent creates a composite molecular structure combining ester groups with specific hydrocarbon chains and alkylene oxide adducts, integrating multiple functional groups into one molecule to achieve contradictory properties of low melting point and high heat resistance
2Stability of the object's composition
If emulsifying components (surfactants) are added to achieve uniform coating, then emulsion stability is improved, but fiber breakage occurs due to hydrolytic thickening
Solution Approach 1:
The patent extracts and eliminates the separate emulsifying component (surfactant) from the formulation, achieving emulsion stability through the intrinsic properties of the ester compound itself, thereby avoiding the harmful hydrolytic thickening effect on fibers
Solution Approach 2:
The ester compound serves dual functions as both lubricating component and emulsifying agent, with its molecular structure providing both lubrication and emulsion stability without requiring additional surfactants that would harm fiber strength
3Reliability
If lubricating components with high melting point are used, then heat resistance is improved, but lubricating performance and handling property deteriorate
Solution Approach 1:
The patent precisely controls the melting point parameter of the lubricating component by selecting ester compounds with specific molecular weights (500-2000) and structures, achieving optimal balance between heat resistance and handling properties at ambient temperature
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 ester compound provides a fiber treatment agent with enhanced lubricating performance, heat resistance, and emulsion stability, facilitating the fiber production process by maintaining a liquid state at ambient temperature and preventing separation during scouring and washing.
Implementation Method 1
an aqueous fiber treatment agent is required to have enough stability in an emulsion state for uniform attachment of a lubricating component on fibers
Implementation Method 2
a fiber treatment agent containing a lubricating component having a high melting point reduces lubricating performance, stability, and/or handling property. There is thus a demand for a fiber treatment agent containing a lubricating component having a low melting point and being in the liquid state at an ambient temperature
Data Source
AI summary
The present invention discloses a fiber treatment agent containing an ester compound represented by the formula (1): R1-O-((EO)l-(PO)m)-(EO)n-CO-R2 (1) wherein, R1 represents a hydrocarbon group containing 8 to 24 carbon atoms; R2 represents an alkyl, alkenyl or cycloalkyl group having 7 to 23 carbon atoms; EO represents an ethyleneoxy group; PO represents a propyleneoxy group; l and n each represent an average reacted mole number of ethyleneoxy groups, 1 ranging from 0 to 15 and n ranging from 1 to 20; m represents an average reacted mole number of propyleneoxy groups, ranging from 0.5 to 20; and ((EO)l-(PO)m) and (EO)n are arranged in block in this order, while (EO)l and (PO)m in ((EO)l-(PO)m) may be arranged at random or in block.