Epilamization Copolymer for Cleaning Resistance
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Solution Overview
Problem
Current epilamization agents have poor resistance to watchmakers' cleaning operations, particularly on gold and steel substrates, and require multiple types for different materials, making them inconvenient and complex to synthesize.
Innovation Solution
A statistical copolymer-based epilamization agent with specific functional units that forms a stable, hydrophobic surface, offering improved resistance to cleaning and universal compatibility with various materials, synthesized in a simplified process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known epilamization agents (e.g., Moebius Fixodrop FK/BS, 3M Fluorad) are used, then the surface becomes hydrophobic and lipophobic to prevent lubricant spreading, but the resistance to watchmakers' cleaning operations is poor
Solution Approach 1:
The invention uses a copolymer comprising at least two different monomer units: first monomer units containing a catechol group for strong substrate attachment, and second monomer units containing a fluorinated chain for hydrophobic/lipophobic properties. This composite structure combines the advantages of both functional groups into a single epilamization agent that provides both strong adhesion and cleaning resistance.
Solution Approach 2:
The invention modifies the chemical structure of the epilamization agent by incorporating specific functional groups (catechol and fluorinated chains) with defined molecular characteristics. The catechol group provides strong coordination bonds with metal substrates, while the fluorinated chains provide the desired surface energy properties and cleaning resistance.
2Adaptability or versatility
If a single epilamization agent is used for all substrates, then universality is improved, but adhesion strength on specific materials like gold and steel may be reduced
Solution Approach 1:
The copolymer epilamization agent is designed to be universal by combining catechol groups that can strongly attach to various metal substrates (gold, steel, etc.) through coordination bonds, with fluorinated chains that provide the required hydrophobic/lipophobic surface properties. This single agent works effectively on multiple substrate types without requiring material-specific formulations.
3Reliability
If multiple types of epilamization agents are used for different materials, then adhesion on each specific material is optimized, but device complexity and inventory requirements increase
Solution Approach 1:
The invention replaces the need for multiple material-specific epilamization agents with a single universal copolymer agent. The catechol groups in the copolymer provide strong adhesion to various metal substrates including gold and steel, while the fluorinated chains provide the required surface energy properties, eliminating the need for inventory management of multiple agent types.
4Reliability
If complex multi-step synthesis methods are used (e.g., mixing thiol and biphosphonic compounds), then adhesion resistance is improved, but manufacturing time and process complexity increase
Solution Approach 1:
The invention merges the functions of multiple separate compounds (catechol group for adhesion and fluorinated chains for surface properties) into a single copolymer molecule. This eliminates the need for complex multi-step synthesis processes involving mixing different compounds, reducing both synthesis time and process complexity while maintaining or improving performance.
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 epilamization agent provides enhanced resistance to cleaning operations and broad material compatibility, ensuring effective lubricant retention on substrates even after multiple cleaning cycles, as demonstrated by increased contact angles with lubricants.
Implementation Method 1
comprising M units, N units and optionally at least one P unit, linked by covalent bonds by their main chains
Implementation Method 2
forming a hydrophobic and lipophobic surface allowing the lubricant to remain in a predetermined place on the treated surface
Implementation Method 3
A, which may be identical or different, forms an anchoring moiety to the substrate, and is chosen from the group comprising thiols, thioethers, thioesters, sulphides, thioamides, silanols, alkoxysilanes, silane halides, hydroxyls, phosphates, protected or non-protected phosphonic acids, protected or non-protected phosphonates, amines, ammoniums, nitrogenated heterocycles, carboxylic acids, anhydrides, catechol
Data Source
AI summary
A substrate including a surface, at least one part of which is coated with an epilamization agent including at least one compound in the form of a statistical copolymer comprising M units, N units and optionally at least one P unit, linked by covalent bonds by their main chains and randomly distributed, whereM isN isP is