Document YDVz1ox950ZvG22kOZQzr44VK
Classification: General Business Use
SHPP's Inputs to the Public Consultation Comments to Annex XV PFAS Restriction Proposal
Question number 6.Missing uses: PTFE Used in Internally Lubricated Thermoplastic Compounds for Automotive Applications
Executive Summary
SABIC's Specialties business (SHPP) produces a range of highly differentiated products, including high-performance thermoplastics, compounds, and additives that meet complex thermal, mechanical, optical, and electrical property requirements.
PTFE internally lubricated engineering thermoplastic (ETP) compounds are widely utilized in automotive applications, some of which are safety-critical and include: steering wheel sensors, throttle body gears, gas pedal and clutch systems, gearbox and under-the-hood components, interior and lighting gears, actuators and sliders, sensor systems, and more. These compounds offer differentiated properties, such as low friction and high wear resistance, resulting in selfhealing and improved tribological properties. They extend the life span of devices or components, reducing plastic waste. In general, these compounds are more expensive than noninternally lubricated compounds and are only used when other materials fail to meet application requirements.
The Society of Environmental Toxicology and Chemistry publishes an Environmental Toxicology and Chemistry and Integrated Environmental Assessment on fluoropolymers. In this report, they state that emissions during the use phase of final articles are negligible, because PTFE is bound within the polymer. The emissions in the waste stage depend on the pretreatment method. Data shows that fluoropolymers are stable and not expected to transform to dispersive nonpolymeric PFAS.
Evaluating the possible alternatives shows that no known alternatives provide the same performance functions and the same/better safety and socio-environmental benefits. Finding an alternative to PTFE in internally lubricated ETP compounds is challenging and would require at least 5-7 years of research and invention. Additionally, numerous tiers, OEMs and moulders across the globe would need to re-design and re-test their tooling, components and systems, which could take 7-10 years for automotive customers to fully replace. Therefore, it could take at least 12-17 years to develop a new material solution with the same performance and environmental benefits as PTFE, and to replace it in existing applications.
Therefore, SHPP requests a 12-year derogation for PTFE used in internally lubricated engineering thermoplastic (ETP) compounds for automotive applications.
Substance Information:
Substance Name: Poly(1,1,2,2-tetrafluoroethylene) Synonyms/Abbreviations: PTFE Molecular formula: (C2F4)n EC/List no.: 618-337-2 CAS number: 9002-84-0 Type: Solid Application: PTFE used in internally lubricated engineering compounds for automotive applications
thermoplastic
(ETP)