German Technical Background VOK-145 Wetting Dispersant For Solvent Free and Solvent Based Coatings Replaces BYK-145

German technical background VOK ®- Disper 145 Wetting Dispersant

VOK ®- Disper 145 is a solvent free wetting and dispersing agent for solvent-free and solvent based coatings. It is especially suitable for stabilizing pigment dispersion in non-polar systems (alkyd, acrylic, thermoplastic acrylic and epoxy).

Product Information

Chemical composition

Phosphate ester salts of high molecular weight copolymers containing pigment affinity groups

Typical Physicochemical Data

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

Acid value: 76 mg KOH/g

Density (20 ° C): 1.07 g/ml

Amine value: 71 mg KOH/g

Special instructions

When used for baking, VOK ®- Disper 145 may adversely affect the adhesion of the paint to the steel substrate. Test VOK before use in white baking varnish ®- Does Dispatch 145 cause yellowing.

Application field

Coating industry

Features and Benefits

The additive can deflocculate the pigment by stabilizing the steric hindrance. Because the particle size of the deflocculating pigment is small, it can obtain high gloss and enhance color strength. In addition, the transparency of transparent pigments and the hiding power of opaque pigments are also improved. Due to the reduction of viscosity, the fluidity is improved and the pigment content can be increased.

Recommended use

VOK ®- Disper 145 has high compatibility with all commonly used paint substrates. VOK ®- Disper 145 is particularly recommended for nonpolar systems (alkyd, acrylic, thermoplastic acrylic, and epoxy).

Recommended dosage

Additive dosage (purchase form) is based on pigment:

Inorganic pigment: 5-10%

Titanium dioxide: 1-3%

Organic pigment: 10-25%

Carbon black: 15-35%

The above recommended dosage is for reference, and the appropriate dosage shall be determined through a series of tests.

Adding method and processing guidance

In order to obtain good performance, additives must be added to the grinding material first, and then the pigment.