Aqueous Dispersion Embossing Lacquer Viscosity Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing nanostructured components using embossing lacquers face challenges with high viscosity issues in urethane acrylate oligomers, which are difficult to apply uniformly and require hazardous reactive diluents to reduce viscosity, affecting mechanical and chemical stability.
Innovation Solution
A method utilizing aqueous dispersions of prepolymer with polymerizable carbon-carbon double bonds, where the viscosity is adjusted without reactive diluents, allowing for easy application and curing to form micro- or nanostructured surfaces with improved mechanical and chemical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If urethane acrylate oligomers are used as embossing lacquer, then mechanical and chemical stability is improved, but viscosity becomes too high for uniform application
Solution Approach 1:
The patent changes the physical state parameter from conventional non-aqueous formulation to aqueous dispersion, which fundamentally alters the viscosity characteristics. The aqueous dispersion maintains the mechanical and chemical stability of urethane acrylate while achieving suitable viscosity for uniform application through the water-based medium.
2Ease of operation
If reactive diluents are added to reduce viscosity of urethane acrylate oligomers, then application ease is improved, but mechanical and chemical stability deteriorates and toxicity increases
Solution Approach 1:
The patent introduces water as an intermediary medium to achieve the desired viscosity reduction without compromising the integrity of the urethane acrylate polymer. The aqueous dispersion uses water as a non-reactive diluent that provides the necessary fluidity for application while leaving the polymer structure intact, avoiding the need for reactive diluents that would compromise mechanical and chemical stability.
3Ease of manufacture
If conventional embossing lacquers are used, then molding properties are achieved, but environmental friendliness and toxicity are worsened
Solution Approach 1:
The patent fundamentally changes the solvent system from organic to aqueous, which transforms the environmental and toxicity profile of the embossing lacquer. The aqueous dispersion maintains all necessary molding properties while eliminating the need for hazardous reactive diluents, achieving both functional performance and environmental sustainability.
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
This approach enables the production of environment-friendly, low-toxic embossing lacquers with adjustable viscosity, suitable for industrial-scale roll-to-roll processes, providing excellent molding properties and multiple imprint generations without tool damage, and offers controllable mechanical and surface properties.
Implementation Method 1
drying the film
Implementation Method 2
curing the embossed film
Data Source
AI summary
A method of preparing an article having an embossed micro- or nanostructured surface using an aqueous dispersion of a curable prepolymer, an article obtainable by the method and the use of the article.