Renewable PVDF Burnishes Li-Ion Battery's Green Credentials

Image: Arkema Li-Ion battery
Based on crude tall oil bio-feedstock, the new grades deliver an almost 20% reduction in climate change impact.

Arkema has launched a sustainable Kynar PVDF (polyvinylidene fluoride) range, claiming 100% renewable attributed carbon derived from crude tall oil bio-feedstock according to a mass balance approach.

Kynar CTO PVDF grades using the mass balance approach under the ISCC+ certification process will be produced first in Arkema’s Pierre-Bénite plant in France for European customers, focusing initially on grades specifically targeted for the lithium-ion battery market.

This patent-pending technology allows a climate change impact reduction of almost 20% of the Kynar PVDF binder (expressed in kg eq. CO2/kg, according to the ISO14040 standard) while reducing dependence on upstream crude oil consumption. The crude tall oil used in upstream feedstock production is a residue of the Kraft process for wood pulp manufacture. The new Kynar CTO grades are certified to be compliant with industry-leading responsible forestry standards. They do not result in deforestation, and there is no direct competition with food crops.

“Arkema has been a leader in advanced bio-circular polymers for many years,” stated Anthony Bonnet, Global R&D Director for fluoropolymers. “Now, we are taking a huge step forward to make fluoropolymer grades using bio-sourced carbon only. It’s a remarkable innovation that we proudly share with our customers across the world. There is a real demand for more sustainable solutions, and we are happy to play a leading role.”

In a second phase, the production of this range of sustainable PVDF grades will be extended to each of Arkema’s global PVDF manufacturing sites and will be made available to all traditional PVDF markets and applications.

Furthermore, Arkema has announced a project in the United States to produce PVDF grades using fluorine derived as a by-product from the agrochemical industry, thus requiring no dedicated fluorspar mining. These grades are expected to be commercialized by mid-2022.

Kynar CTO grades will be offered as functionally identical alternatives to Arkema’s flagship binder grades, Kynar HSV900 and Kynar HSV1810.

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