Arkema develops Kynar® PVDF structure for floating and evaporation control devices

- Press release
Arkema Inc. has developed technology to manufacture Kynar® PVDF foam structures for floating protective and evaporation control devices. The technology is based on Arkema’s patent-pending Kynar® foam technology.

Kynar® PVDF serves industrial needs where excellent chemical resistance is required against such chemicals as water, strong acids, strong oxidants, halogens, aromatic solvents, aliphatic solvents, hydrocarbons, and ozone.


“Most recently, our team developed patent-pending technology to enable floatation of Kynar® cylinders and cut sheets,” said Sean M. Stabler, Arkema’s Business Development Engineer for Fluoropolymers.  “This is in response to concerns for environmental pollution and personal protection in industrial applications where exposure to chemicals needs to be minimized.”

Kynar® PVDF floats on water.

Normally, Kynar® PVDF would not float on liquids with a specific gravity below 1.7 g/cc.  Using this technology, the specific gravity of Kynar® PVDF components is reduced to below 1.00 g/cc, allowing it to float on chemicals such as chromic, hydrochloric, nitric, phosphoric, sulfuric, citric, and hydrofluoric acids.  It can even be used for xylene, perchloroethylene, and other chlorinated solvents often used in metal plating industries.  In certain conditions, Kynar®  PVDF “floats” could also be used with sodium hydroxide and other bases.


Industrial applications such as chrome and nickel plating, as well as aluminum coil stock pretreatment, use corrosive and toxic chemicals that  need Kynar® PVDF floats to cover the surface of tanks for a variety of reasons.  These floats would act to minimize evaporation of the chemicals and reduce misting or spray of the chemicals from bursting air bubbles, reduces pollution as well as exposure of the chemicals.  The Kynar® PVDF floats can also serve as a

barrier to reduce dust, dirt, insects, and other contaminants from landing in the tanks.  Since this product is foamed, it also acts as a thermal insulator to reduce heat loss in the tanks.  Depending on the specific application, it could have up to a 150°C temperature rating. Kynar® PVDF floats are also suitable for long-term outdoor applications based on their excellent resistance to UV rays.


Kynar® PVDF floats are available in small cylinders so that they can easily maneuver upon the surface of the chemicals tanks as articles are dipped in and out of the tanks. Other applications include evaporation control for wastewater ponds, process water tanks, and miscellaneous chemical ponds.


About Arkema

A global chemical company and France’s leading chemicals producer, Arkema is building the future of the chemical industry every day. Deploying a responsible, innovation-based approach, we produce state-of-the-art specialty chemicals that provide customers with practical solutions to such challenges as climate change, access to drinking water, the future of energy, fossil fuel preservation and the need for lighter materials. With operations in more than 40 countries, some 14,000 employees and 10 research centers, Arkema generates annual revenue of approximately $8.1 billion, and holds leadership positions in all its markets with a portfolio of internationally recognized brands.

Kynar® is a registered trademark of Arkema Inc.