Zero-Dead-Angle Wetting for Metal Coatings

Oily or oxidized metal substrates (e.g., steel structures) often cause incomplete wetting. An agricultural machinery plant reported 40% cratering on welds, requiring manual respray at ￥120/unit extra cost.

Chemi Tech's wetting agent KMP-303 innovates with:

Dual-adsorption groups: Oleophobic chains remove oil films, hydrophobic segments penetrate oxides, cutting contact angles from 75° to 15°;

Rapid diffusion: Low MW (<500Da) ensures full weld coverage within 3 seconds;

Foam control: Balanced foam suppression prevents spray-induced craters.

Case: Heavy Machinery Coating Upgrade

Producing hydraulic supports with complex welds, this plant eliminated leveling lines after adopting KMP-303:

Application: 0.4% in primer, spray pressure reduced from 200Bar to 150Bar;

Results:

Weld craters dropped from 40% to 3%, edge coverage increased 35%;

Film thickness variation narrowed from ±15μm to ±5μm;

Respray rate decreased 50%, saving ￥2.8M annually.

Now achieving 98% first-pass yield on container corrugated panels.