German technical background VOK-431 Rheological additives Improve resistance to current sagging and settlement replaces BYK-431

German technical background Volcker VOK ®- AL 431 liquid rheological agent

Liquid rheological agent, used for solvent based coatings, adhesives and sealants, to improve anti sagging and anti settling properties.

Product Information

Chemical composition: non-polar polyamide solution modified by high molecular weight urea

Typical Physicochemical Data

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

Density (20 ° C): 0.87 g/ml

Refractive index (20 ° C): 1.43

Non volatile matter: 25%

Solvent: isobutanol/phenyl glycol 6/1

Flash point: 30 ° C

Storage and transportation

When the storage and transportation temperature is lower than 10 ° C, the product may be stratified or turbid. The effectiveness of the additive will not be affected when it is added under the dispersion condition of temperature not lower than 50 ° C. If in doubt, it is recommended to test its effectiveness.

application area 

Paint industry, adhesives and sealants

Product features and advantages

With the help of pigments and fillers, the additive produces a three-dimensional network structure. The entanglement of high molecular weight polymer can form pseudoplastic rheological behavior. The polarity of the system and the temperature at the time of addition will affect the rheology. The quick rise of viscosity after shearing can prevent the sedimentation of pigments and fillers and produce good anti sagging property. The additive has no "prosthetic effect" and has no adverse effect on interlayer adhesion. It is liquid and easy to operate.

Improve flow and leveling during baking cycle

Improve the fluidity of dry film and make it easier to compound

Good optical clarity

Better wettability of organic pigments