German technical background VOK-C 8000 Adhesion promoter For solvent based and solvent-free coatings replaces BYK-C 8000

German technical background VOK ®- C 8000 reactive polymer coupling agent (adhesion promoter).

Used to improve the mechanical properties of free radical curing systems. Polyester concrete and solid surface materials applied to plastics; Especially suitable for resin filled with quartz sand/granite. In solvent based and solvent-free coatings, the additive can be used as an adhesion promoter for metal and glass surfaces.

Product Information

chemical composition 

Reactive copolymer solution containing functional groups

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): 0.99 g/ml

Non volatile matter: (10 min, 150 ° C): 18%

Storage and transportation

It must be stored and transported at a temperature lower than 40 ℃. Sensitive to moisture.

application area 

Room temperature curing resin system

Product features and advantages

VOK®- C 8000 improves mechanical properties such as bending strength, compressive strength and elastic modulus by up to 50%. The additive is recommended for free radical curing systems such as polymer concrete and solid surface materials, especially for resins filled with quartz sand/granite.

Recommended dosage

0.1-0.3% of auxiliary dosage (purchased form) is based on filler. The above recommended dosage is for reference, and good dosage shall be determined through a series of tests.

Adding method and processing guidance

The additive should be added to the resin shortly before curing. After addition, the resin system needs to be processed within 24 hours. The length of storage time in the system depends on the type and amount of resin added.

Coating industry

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

Adding method and processing guidance Product characteristics and advantages

In solvent based and solvent-free coatings, VOK®- C 8000 can improve the adhesion to substrate, such as pretreated steel and glass. In the test formula, the additive has no adverse effect on the performance of the standard coating. Recommended for reactive acrylate systems, baking coatings (e.g. acrylic acid/melamine) and UV curing systems.

Recommended dosage

Not more than 1% of auxiliary dosage (active substance) is based on the total formula.

Under the condition of continuous stirring, the additive can be added at any stage in the coating production process.