barrier-free version
Megaface
Flurosurfactants:
Fluorosurfactants are additives which have very strong surface activities stemming from the properties of the fluorine atom. As an excellent leveling agent, they contribute to thin film coatings, high speed coatings, precision coatings and various other coatings. They also provide wettability, penetrability, PTFE dispersibility, pigment dispersion stability and various other surface activities.
KEY FUNCTIONS:
Leveling: Coating with flat surface, prevention of coating defects
Wettability: Penetrability, surface tension reduction
Dispersion stabilization: PTFE dispersibility, pigment dispersion stabilization
Other function: Anti-diffusion, improved molding, fibre and textile surface processing
FEATURES:
Drastic reduction of surface tension
Excellent leveling properties and wettability
Effective with only small quantities
Effective in both aqueous and non-aqueous systems
* Photographs taken with a monochromatic lamp revealing changes in the film thickness. The larger spanning between dark and light regions in fig. "Fluorosurfactant'' indicates that the film has a more uniform thickness.
Comparison of surfactants in reducing surface tension of aqueous solutionss
Surface Modifiers:
Additives which can modify properties of solid surface formed by coating or molding with a small amount of additive are called surface modifiers. We also have a range of fluorosurfactants that act as surface modifiers based on the properties of the fluorine atom. These can provide water repellency, oil repellency, stain guard, anti-blocking and low friction properties to solid surfaces.
For example, it is difficult to provide oil repelling (except fluorochemical-based), therefore fluorochemical surface modifiers are useful for uses of oil stain guard etc.
FEATURES:
Strong water repellency
Excellent oil and organic solvent repellency
Various stain guard and release
Possible improved coatability
Strong Water and oil repellency, Stain guard
Comparison of contact angle on surface of UV cured film
Defensa
Solvent-based Stain Guard and Release Coatings
"DEFENSA TR Series" is a solvent-based fluorochemical surface coating that has excellent stain guard and release properties as well as good substrate adhesion. Different product numbers are available for different substrates and applications.
FEATURES:
Stain guard properties
Stain release properties (cleanability)
Effective again a wide range of stains (coffee, ink maker, dried soil, cigarette tar, hair dyes, shoe polish)
Water repellency (water contact angle: 100°C)
Non-adhesiveness, low friction, release properties
Film properties for target surface
APPLICATIONS:
Surface treatment for PVC (decorative paper, leather)
Rubber (E&E parts, office appliance components)
Artificial leather
Polyethylene terephthalate films
Strong Stain Guard and Stain Release Properties
Stain guard against oil-based ink marker with ethyl alcohol 24 hours later (Substrate : soft PVC)
Defensa op-series
UV Curable Hard-coatings, with Stain Guard and Release
A UV curable hard coating with excellent stain guard properties and anti-wear properties. Unevenly distributing and fixing of perfluoroalkyl group to the coating surface resolve the "bleed out" problems of surface modifiers that result in reduced stain resistance, and thus provide long-lasting stain guard and release properties.
FEATURES:
Stain guard properties
Stain release properties (cleanability)
Long-lasting stain resistance
Wide range of product-design for various applications
UV curable even under air
Excellent coating performance
Stain guard against oil-based ink marker before wiping, ethyl alcohol wiping, and stain guard after wiping
APPLICATIONS:
Fields in which stain guard and hard coat properties are required:
Touch panels
Optical films
Optical fibres
Optical lenses
Stain guard and coating for optical disks
Defensa Product Example 2