German technical background VOK ®- Disper W940 Wetting Dispersant

VOK ®- Disper W940 is used as a wetting and dispersing agent for dispersing mineral fillers in unsaturated resin systems and adhesives. The additive can prevent floating color, blooming and settling of pigments and fillers in epoxy and vinyl/unsaturated polyester laminates. It can also reduce the floating color of colored pigment in gel coat.

Product Information

Chemical composition

Solution of unsaturated polycarboxylic acid polymer 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: 150 mg KOH/g

Density (20 ° C): 0.95 g/ml

Refractive index (20 ° C): 1.486

Non volatile matter (10 min., 150 ° C): 50%

Flash point: 28 ° C

Layering or turbidity may occur during storage and transportation. Heat to 30-60 ° C and disperse evenly.

Application field

Room temperature curing system

Product features and advantages

VOK ®- Disper W940 is a wetting and dispersing agent for mineral fillers and inorganic and organic pigments. It can stabilize the solid particles in the resin system, prevent the settlement of filler and the floating color of pigment. VOK ®- Disper W940 is mainly used for color paste and gel coat using unsaturated polyester resin.

Recommended dosage

Additive dosage (purchase form) is based on solid:

Inorganic pigment: 0.5-3%

Organic pigment: 2.5-5%

Filler: 0.5-1.5%

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, the additive should be added before adding solids.

Adhesives&Sealants

Product features and advantages

VOK ®- Disper W940 is a wetting and dispersing agent for mineral fillers and inorganic and organic pigments. It can stabilize the solid particles in the adhesive system, prevent the settlement of filler and the floating color of pigment. VOK ®- Disper W940 is recommended for epoxy and polyester adhesive systems. The additive contains polysiloxane copolymer, which can reduce floating color and blooming.

Recommended dosage

Additive dosage (purchase form) is based on solid:

Inorganic pigment: 0.5-3%

Organic pigment: 2.5-5%

Filler: 0.5-1.5%

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, the additive should be added before adding solids.

Pultrusion forming

Product features and advantages VOK ®- Disper W940 is used to prevent the settlement of pigments and fillers in the pultrusion molding application of vinyl resin/unsaturated polyester type.

Recommended dosage

Additive dosage (purchase form) is based on solid:

Inorganic pigment: 0.5-3%

Organic pigment: 2.5-5%

Filler: 0.5-1.5%

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, the additive should be added before adding solids.