Kynar® is a 1 mil fluoropolymer top finish and contains a minimum of 70 percent polyvinylidene fluoride (PVDF). This high content is the key difference compared to standard PVDF coatings, which typically contain less than 30 percent. Kynar also contains carbon-fluorine (C-F) bonds, one of the strongest and most stable chemical bonds that exist. The alternating C-F bond results in a higher polarity on the surface allowing it to resist environmental degradation, chemicals and dirt accumulation.
The very low surface energy and low coefficient of friction of the Kynar® based coatings resist soiling as compared to standard PVDF finishes. The lack of dirt accumulation and the non-nutrient value of Kynar® resin to support fungal growth further inhibit mildew development. In laboratory tests on coated fabric, Kynar® resin performs comparably to Tedlar top finish film.
Kynar® and Kynar Aquatec® are registered trademarks belonging to Arkema Inc.