German technical background VOK®- AP 4510 adhesion promoter

Adhesion promoter, suitable for solvent-based and water-based systems of metal and glass substrates.

Product information

chemical composition 

Hydroxyl functional copolymer solution containing acidic groups

Typical physical and chemical data

The data given in this data page are only typical values, not technical indicators of the product.

Acid value: 30 mg KOH/g

Density (20 ℃): 1.12 g/ml

Non-volatile substances (10 minutes, 150 ℃): 80%

Solvent: propylene glycol monomethyl ether

Flash point: 48 ℃

application area 

Coating industry

Product features and advantages

The adhesion promoter of acid group, which does not contain organic silicon, has good adhesion, especially for metal substrate, improving the adhesion of steel, galvanized steel, aluminum, non-ferrous metals, and even glass. VOK®- 4510 reacts with melamine resin and polyisocyanate to add to the polymer matrix. The additive is compatible with most resins, so it can be widely used. Depending on the system, the additive can improve flexibility without reducing hardness. It can further reduce the sedimentation of inorganic pigments and fillers. It has no adverse effect on the storage stability, recoating property and weather resistance of the coating. The additive is stable even at high baking temperature (temporarily higher than 280 ℃) and will not cause yellowing.