German technical background VOK-220S Wetting dispersant Improved gloss and leveling of paint replaces BYK-220S

German technical background VOK ?- Disper 220S Wetting Dispersant

The wetting and dispersing agent in solvent based and solvent-free coatings can improve the pigment wetting, reduce the time required in the grinding process and stabilize the pigment dispersion. The deflocculation of pigments stabilizes the hue and tinting power and prevents floating/blooming. This additive strongly reduces viscosity and improves the luster and leveling of coatings. VOK ?-?- 220 S can stabilize all pigments and is more suitable for use in industrial coatings. It increases luster, prevents floating/blooming and reduces grinding viscosity. VOK ?- Disper 220S is famous for its wide compatibility in two-component acrylate system.

chemical composition 

Solution of low molecular weight, unsaturated acid polycarboxylate polyester and polysiloxane copolymer

Typical Physicochemical Data

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

Acid value: 100mg KOH/g

Density (20 ° C): 0.96 g/ml

Solvent: alkyl benzene

Non volatile matter (10 minutes, 150 ° C): 52%

Flash point: 48 ° C

Storage and transportation

Separation or turbidity may occur. Mix well before use. Heat to 30-60 ° C and mix well.

Special instructions

The compatibility of paint systems based on petroleum solvent or diluted with petroleum solvent is limited.

application

Thermosetting plastics

Special features and advantages

VOK ?- Disper 220S improves the dispersion of all conventional fillers, such as calcium carbonate and aluminum hydroxide. It reduces the viscosity of the filler resin, thereby increasing the filler content. In most cases, settlement of the filler is significantly reduced during storage and processing. VOK ?- Disper 220S is suitable for stabilizing pigment in gel coat. The additive also contains a small amount of polysiloxane copolymer to reduce flooding and floating. This prevents the formation of Benard cells and improves surface smoothness and leveling.

Recommended

The additive is especially recommended for unsaturated polyester resin, gel coat, acrylic acid, polyurethane and epoxy resin, and shows the highest efficiency in all applications. Special attention

This processing aid should always be used in conjunction with the standard leveling agent.

Recommended dosage

Additive dosage 0.5-1.5% (purchase form) based on the total formula

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