German technical background VOK-204 Wetting dispersant Control flocculation and prevent floating color replaces BYK-204

German technical background VOK ®- Disper 204 Wetting Dispersant

VOK ®- Disper 204 Controlled flocculation wetting dispersant for solvent based systems, used to prevent the settlement of fillers and inorganic pigments in medium polar to non-polar thick coating systems and primers, and the preparation of bentonite slurry

Product Information

Chemical composition

Polycarboxylate solution of polyamine amide

Typical Physicochemical Data

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

Amine value: 37 mg KOH/g

Acid value: 41 mg KOH/g

Density (20 ° C): 0.93 g/ml

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

Solvent: propylene glycol methyl ether/alkylbenzene 3/2

Flash point: 31 ° C

Application information

Coating industry

Features and Benefits

The additive plays a role by controlling flocculation of pigments. The flocculation control function can also resist sagging, prevent pigment sedimentation and floating color.

And VOK ®- Disper 203 is different, VOK ®- Disper 204 is also suitable for nonpolar systems (compatible with petroleum solvents). The lower the polarity, the stronger the thixotropy. Suitable for long oil, medium oil and short oil alkyd, PVC copolymer, chlorinated rubber and epoxy base material systems. When used as anti-corrosion primer, the anti-corrosion performance is often improved.

Recommended Applications

Particularly recommended application fields: industrial coatings, wood and furniture coatings, anti-corrosion coatings.

Recommended application field: architectural coatings.

Recommended dosage

Additive dosage (purchase form) is based on pigment:

Inorganic pigment: 1-2%

Titanium dioxide/filler: 0.5-1%

Bentonite: 30-50%

The above data are empirical dosage, and good dosage shall be determined through a series of tests.

Addition method and processing guidance

In order to obtain good performance, the additive should be added to the abrasive first, and then the pigment.

The additive can remedy the paint with problems, but its efficacy will be reduced at this time.

Recommended formula of bentonite slurry:

85-87 parts by weight of solvent

10 parts by weight of bentonite

5-3 parts by weight of additives

The solvent can be aromatic solvent or aromatic petroleum solvent, or aromatic free solvent gasoline. If the gel effect is insufficient, polar solvent can be added to enhance the gel effect.

Special attention

In coatings based on nitrocellulose, chlorinated rubber or polyvinyl chloride copolymer, these additives may cause discoloration. In the silicate coating, the construction time limit will be shortened. Higher addition may affect the construction time limit and curing reaction of epoxy system. The amine value of the additive is high, which will cause the viscosity of epoxy resin to increase.

SMC, BMC, pultrusion

Features and Benefits

The additive plays a role by controlling the flocculation of the filler and is mainly used to prevent the settlement of the filler.

Recommended Applications

Particularly recommended application field: pultrusion.

The additive is applicable to all pultrusion resin systems including unsaturated polyester, vinyl ester, acrylic acid and epoxy.

Recommended dosage

0.5-1.5% auxiliary dosage (purchase form) based on filler

The above data are empirical dosage, and good dosage shall be determined through a series of tests.

Addition method and processing guidance

In order to obtain good performance, the additive should be added to the grinding material first, and then added with pigments and fillers.

Room temperature curing system

Features and Benefits

The additive plays a role by controlling the flocculation of fillers and tablets, and is mainly used to prevent particle sedimentation. ANTI-TERRA-204 can make the filler and sheet in acrylic acid system more uniform. The additive can prevent sedimentation, and the system using flakes can obtain a more even surface structure.

Recommended Applications

Particularly recommended for acrylic systems (PMMA in MMA).

Recommended dosage

0.5-1.5% auxiliary dosage (purchase form) based on filler

The above data are empirical dosage, and good dosage shall be determined through a series of tests.

Addition method and processing guidance

In order to obtain good performance, the additive should be added to the abrasive first, and then the powder.