What are RFFs?

RFF is a truly sustainable alternative offering performance features significantly improve the environmental footprint while at the same time adding technical benefits not present in today's product mix.


Reduce your Emissions

UPM BioMotionTM Renewable Functional Fillers (RFF) are made from responsibly sourced hardwood from regional, sustainably managed forests. The wood is sourced exclusively from certified and sustainable forest operations and we build local value chains with strict responsibility standards. Sustainably managed forests combine industrial use of wood with ecosystem protection and forest growth and play a vital role in mitigating climate change.


The unique properties of the RFF facilitate the transition towards a more sustainable rubber and plastics industry, helping to reduce the ecological footprint of rubber and plastics applications considerably. RFFs contain more than 94% renewable carbon (certified bio-based content by DIN CERTCO):


> 90% CO₂

have a 90% lower carbon footprint than standard furnace carbon black (see infographic).

> 25% lighter

are at least 25% lighter than conventional fillers – lighter means higher material-efficiency and better fuel economy.

PAH free

are free of polycyclic aromatic hydrocarbons (PAH).


Key Features

RFF are 100% electric insulating

This feature effectively prevents electrochemical corrosion when in direct contact with light metal alloys like magnesium and aluminium and improves the lifetime of the metal parts.

Surface functionalities

Driven by a total oxygen content of greater than 25wt%, it enables chemical bonding of RFF to polymer matrices.

Clean & safe

RFF is a PAH free product. The absence of carcinogenic substances banned by regulations, making it a safe solution to produce rubber and plastics products in contact with humans.


UPM BioMotionTM RENEWABLE FUNCTIONAL FILLERS (RFF): The perfect additives for industrial, home, soil, and marine composting

UPM BioMotionTM RFF have been awarded the certification mark “DIN-Geprüft Additive EN 13432” with unlimited use in quantity in the final product.

DIN CERTCO confirmed UPM BioMotionTM RFF as being biodegradable in industrial, home and soil environments.

In addition, UPM BioMotionTM RFF have demonstrated conformity according to DIN EN ISO 224031 for biodegradability in the marine environment.

This is why you can trust us

Rubber Lab – Application Development Center

We have equipped our UPM Rubber Lab with the most modern rubber & testing appliances. We guide our customers to select appropriate grades, processing parameters and process techniques for various applications and provide after-sales services to solve technical problems.

Our experienced technical experts are here to shape your ideas and evaluate your requirements to facilitate a ready-to-use solution from mixing to testing.

Learn more



Transforming rubber from within
Story | 12/14/2022 11:00:00 | 1 min

Transforming rubber from within

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Transforming the automotive industry: Biochemicals offer a wide range of opportunities to help OEMs and automakers become more sustainable
Story | 10/19/2022 13:00:20 | 3 min

Transforming the automotive industry: Biochemicals offer a wide range of opportunities to help OEMs and automakers become more sustainable

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Exclusive distribution agreement with KRAHN Chemie
Story | 05/03/2022 13:26:19 | 2 min

Exclusive distribution agreement with KRAHN Chemie

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RFF will be a real game-changer
Story | 02/24/2022 13:28:00 | 9 min

RFF will be a real game-changer

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Our Milestones

We plan to produce several thousand metric tons of RFF in our modern biorefinery located in Leuna, Germany. After the groundbreaking in 2020, the construction is in full swing. We expect the technical start-up for the end of 2023, with production ramped up in 2024.


Do you have any questions?

Go to FAQ