Fluorinated Polymer Curable Composition for Imprint Replica Mold
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Solution Overview
Problem
The cured product layer for a replica mold made from existing resin mold material compositions exhibits insufficient adhesion to the mold substrate and release properties when used in the imprinting method.
Innovation Solution
A curable composition comprising a fluorinated polymer with specific structural units and a photo-acid generator, where the fluorinated polymer has a mass percentage between 11 to 89% and includes structural units with a cationic polymerizable reactive group, improving adhesion and release properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional resin mold material composition is used, then the cured product layer can be formed on the mold substrate, but the adhesion to the mold substrate is insufficient
Solution Approach 1:
The patent changes the chemical composition parameters of the curable resin by incorporating fluorinated polymers with specific structures (containing CF3 groups and carboxyl groups) and controlling their content (0.1-10 parts by weight per 100 parts curable resin). This parameter change improves adhesion to the mold substrate while maintaining release properties through the specific fluorinated structure.
Solution Approach 2:
The patent creates a composite curable resin composition by combining fluorinated polymers with curable resins (acrylates, epoxies, etc.) and crosslinking agents. This composite material achieves both strong adhesion to the mold substrate and excellent release properties from the cured product, resolving the contradiction between these two requirements.
2Strength
If the fluorinated polymer content is increased to improve adhesion, then the release property deteriorates
Solution Approach 1:
The patent precisely controls the fluorinated polymer content within 0.1-10 parts by weight per 100 parts curable resin, and the structural units ratio (a:b) between fluorinated structural units and crosslinking structural units. This optimized parameter range ensures sufficient adhesion while preventing excessive fluorinated polymer from compromising release properties.
Solution Approach 2:
The patent introduces structural units with different functions: structural units (a) providing adhesion through carboxyl groups and structural units (b) providing release properties through crosslinking groups. This local differentiation of material quality within the polymer structure allows simultaneous achievement of adhesion and release properties.
3Ease of manufacture
If a simple curable resin is used, then the manufacturing process is simple, but the adhesion and release properties are insufficient
Solution Approach 1:
The patent develops a composite curable resin composition that maintains relative manufacturing simplicity while achieving superior adhesion and release properties. The composition includes fluorinated polymers (0.1-10 parts), curable resins (100 parts), and crosslinking agents (0.1-50 parts), which can be mixed and cured using conventional processes.
Solution Approach 2:
The patent modifies the chemical composition parameters of the curable resin system by adding fluorinated polymers with specific structures and controlling their content within 0.1-10 parts by weight per 100 parts curable resin. This parameter modification enhances adhesion and release properties without fundamentally changing the manufacturing process.
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 solution enhances the adhesion of the cured product layer to the mold substrate and its release from the transfer object material, preventing peeling and ensuring excellent release properties during the imprinting process.
Implementation Method 1
a photo-acid generator, wherein the proportion of the fluorinated polymer is from 11 to 89 mass % in 100 mass % of the curable composition for imprinting
Data Source
AI summary
To provide a curable composition for imprinting whereby a cured product layer for a replica mold, which is excellent in the adhesion to a mold substrate and the release property from a cured product of a transfer object material when used in an imprinting method is formed; a replica mold for imprinting, using the curable composition for imprinting; its production process and a process for producing an article having a fine pattern on its surface by using the replica mold.A curable composition for imprinting, which comprises a fluorinated polymer comprising structural units (a) based on CH2═C(R1)C(O)OR2Rf (R1: a hydrogen atom, a methyl group or the like, R2: a bivalent linking group having no fluorine atom and Rf: a C2-6 fluoroalkyl group or the like) and structural units (b) having a cationic polymerizable reactive group having an oxygen atom, and a photo-acid generator, wherein the proportion of the fluorinated polymer is from 11 to 89 mass % in 100 mass % of the curable composition for imprinting.