Air-Drying One Component Anti-Corrosion Primer – Grey

This document outlines a starting formulation for an air-drying one-component anti-corrosion primer in grey color. The primer is designed to offer fast drying times, even under adverse conditions, excellent pendulum hardness, and great corrosion resistance. The formulation includes a variety of components sourced from different suppliers, each contributing to the primer's performance and properties.

Here's a breakdown of the formulation steps and components:

1. Resin Base: Bayhydrol UH 2592 from Covestro is the main resin component, comprising 30.84% of the formulation.
2. Solvents and Additives: Butyl glycol/Dowanol DPnB (1:1) serves as the solvent, while Borchi® Gen 1750, Ascotran H10, Borchi® Gol LA 50, and Borchers® AF 1171 act as wetting agents, dispersants, flash rust inhibitors, substrate wetting agents, and defoamers, respectively.
3. Pigments and Extenders: This step involves incorporating anti-corrosion pigments (K-White 105 and Bayoxide® Z active), black and white pigments (Kronos 2190 and Lamp Black FW 101), and extenders (EWO and Finntalc M 15) into the resin base.
4. Water Addition: Deionized water is added in multiple steps to achieve the desired consistency and viscosity of the primer.
5. Thickener and Drier Addition: Borchi® Gel 0620, a rheology modifier, and Borchi® OXY-Coat 1101, a co-free drier, are added to enhance the primer's application properties and drying characteristics.
6. Final Adjustment: Water is added to adjust the spray viscosity to the recommended level.

The formulation process involves specific mixing and stirring procedures at different stages to ensure proper dispersion and homogeneity of the components. The document also includes technical data such as pH value, viscosity, pigment volume concentration, density, solids content, drying time, VOC content, and cross-cut test results. Additionally, suppliers for each component are listed along with their respective websites for further reference. Finally, a disclaimer is provided, stating that the information is for guidance only, and customers are responsible for testing and verifying the suitability of the product for their specific applications.