German technical background VOK-184 Wetting dispersant Improve color acceptance of color paste replaces BYK-184

German technical background VOK ?- Disper 184 Wetting Dispersant

VOK ?- Disper 184 is an additive used to improve the color acceptability of color pastes in water-based systems.

Product Information

Chemical composition

Modified polyurethane solution

Typical Physicochemical Data

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

Amine value: 15 mg KOH/g

Density (20 ° C): 1.09 g/ml

Non volatile matter (20 minutes, 150 ° C): 52%

Solvent: dipropylene glycol monomethyl ether/propylene glycol 2/1

Flash point:>78 ° C

Storage and transportation

Mix well before use. When the temperature is lower than 5 ° C, stratification or turbidity may occur. Heat to 20 ° C and mix thoroughly.

Special reminder

The post-treatment of some organic pigments will have a negative impact on the performance of the additive. In this case, the same type of untreated pigment can be used.

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 improve color intensity. In addition, the transparency of transparent pigments and the hiding power of opaque pigments are also improved. Due to the reduction of viscosity, the flowability is improved and the content of pigment can be increased.

Recommended dosage

The amount of additives (purchase form) is based on:

Inorganic pigment: 15-20%

Titanium dioxide: 4-6%

Organic pigment: 20-45%

Carbon black: 65-80%

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. Premix the resin and solvent components in the abrasive,

Then slowly add the auxiliary agent in the state of continuous stirring. Do not add pigments when the auxiliaries have not been completely dispersed evenly.