POLYFLUO 540 is a very fine grade of micronized modified fluorocarbon which has been specially processed for easier dispersion, better gloss, and faster particle migration. POLYFLUO 540 has been micronized to a 1-2 NPIRI grind gauge reading which eliminates the need for prior compounding, grinding or melting.
Due to its very fine particle size, POLYFLUO 540 can be incorporated into most coatings using conventional mixing equipment. As with Polyfluo 190, POLYFLUO 540 will impart an excellent combination of film toughness (rub resistance) and lubricity (slip) when added into printing inks, paints or other types of surface coatings.
POLYFLUO 540 is recommended for use in offset, letterpress, ultra-violet, flexo and gravure inks as well as solvent based paints and coatings. Rub and slip properties of overprint varnishes are greatly enhanced when POLYFLUO 540 is added at 1/2-1% loadings. UV inks and coatings have shown improvement in rub resistance and slip due to the fast particle migration of POLYFLUO 540 to the ink surface before curing.
Optimum properties for most inks, paints and surface coatings are usually achieved by adding 1-3% by weight. The amount will vary depending upon the type of application and the end use requirements.
At temperatures above 600°F some polymer fumes may be emitted due to decomposition of the fluorocarbon polymer. Therefore, smoking should not be permitted when working with this material.