Zinc Flake Technology – Top Coats
The Final for Highest Corrosion Protection
Atotech’s top coats can be combined with zinc flake base coats as well as electroplated zinc or zinc alloy layers forming multifunctional coatings, which provide additional benefits such as increased corrosion protection and constant friction values. With the Zintek® Top (L) range Atotech offers water-based mineral reactive top coats that improve greatly corrosion protection and mechanical properties of the base coat by only applying a layer of 0.5 - 1 micron.
The Zintek® Top S (L) products give outstanding performance especially to zinc and zinc alloy plated parts. Black parts get an exceptional uniform glossy appearance with excellent white corrosion protection. The Techseal® product line provides highest chemical resistance, uniform appearance, as well as increased corrosion protection with defined friction values Techdip products offer UV resistant layers with excellent adhesion also on plated wood screws.
Top Coats
| Product | Color | Features | Typical Application | |
|---|---|---|---|---|
| Inorganic Top Coats | ||||
| Zintek® Top | Transparent | - Cr-free and solvent-free mineral top coat - Water-based with transparent silicate - Reactive sealing additive - Low drying temperature: 50 - 200 °C | Suitable on top of zinc flake base coats on every kind of part | |
| Zintek® Top L | Transparent | - Range of products that include internal lubricant for torque tension adjustment | Used on metric fasteners by dip spin application | |
| Zintek® Top S (L), Zintek® Top Black S (L) | Transparent Black | - Range of solvent based products with or without internal lubricant - Excellent adhesion - Improved corrosion protection, especially delay of white corrosion formation - Uniform black finishes | - Dip spin or spray application - Fasteners (e.g. screws, nuts, springs, etc.) - On plated Zn or Zn alloys, mechanical or sheradized Zn layers and on Zn flakes | |
| Zintek® Top L Green Zintek® Top L Blue Zintek® Top L Red | Green Blue Red | - Similar to Zintek® Top L - Green, blue or red pigments for easy identification | Used on metric fasteners by dip spin application | |
| Organic Top Coats | ||||
| Techseal® Silver WL, SL Techseal® Black SL Techseal® Blue SL Techseal® Green SL | Silver Black Blue Green | - Range of Cr(VI)-free top coats - Water-based W or solvent-based S versions - Very good performance in neutral salt spray test - Includes internal lubricant to adjust torque tension requirements - Other colors on request | - Suitable for zinc flake coatings as well as zinc and zinc alloy electrodeposits - Dip spin, spray or dip drain application | |
| Techdip Silver SL Techdip Black SL | Silver Black | - Range of UV-resistant top coats - High Kesternich resistance - Very good performance in neutral salt spray and ACQ test - Excellent adhesion - Other colors on request | Dip spin or spray application | |