Innovation meets Sustanability

PFAS-free Liquid Glass Coatings

Our innovation: PFAS-free - yet still oil-repellent

PFAS-free coatings are the defining topic of our industry – and we are setting new standards. As one of the world’s leading manufacturers, we already offer a wide range of high-performance, sustainable Liquid Glass coatings.

What we offer

26 out of our 41 Liquid Glass coatings are already completely PFAS-free
All remaining products are PFOS- and PFOA-free

A rarity in the market: Some of our PFAS-free coatings still provide outstanding oil-repellent properties, e.g.:

7675 & 673 – for glass, ceramics, metal, and painted surfaces
Our versatile Pro Coatings

Learn about PFOA & PFAS

PFOA and PFAS – Definition & Relevance

Perfluorooctanoic acid (PFOA), also referred to as C8, is a synthetic perfluoroalkyl compound belonging to the broader class of per- and polyfluoroalkyl substances (PFAS). PFAS comprise a large group of fluorinated organic chemicals characterized by strong carbon–fluorine bonds, which confer exceptional thermal stability, chemical resistance, and surface-active properties. Historically, PFAS have been used to impart water, oil, and stain repellency to a wide range of industrial and consumer products, including textiles and footwear, upholstery and carpets, outdoor gear and technical fabrics, and automotive interiors.

Persistence & Environmental Behavior

Due to their chemical stability, PFAS are highly resistant to environmental degradation through photolysis, hydrolysis, or biodegradation. As a result, they are classified as persistent organic pollutants (POPs). PFAS can bioaccumulate in living organisms and biomagnify through food chains, leading to increasing concentrations at higher trophic levels—similar to legacy pollutants such as DDT or PCBs. Their persistence and mobility have resulted in widespread global distribution across environmental compartments, including surface water, groundwater, soils, sediments, and biota (Houde et al., 2011).

Toxicological & Human Exposure Aspects

Several PFAS compounds have demonstrated toxicological effects in laboratory studies on vertebrates, including fish, birds, and mammals, particularly affecting the liver, immune system, and reproductive functions. Two of the most extensively studied and environmentally prevalent PFAS—perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS)—have been detected in human blood serum, breast milk, and various organs such as the liver and kidneys across global populations (Kannan et al., 2004). Both substances are now restricted under international conventions (e.g., the Stockholm Convention on Persistent Organic Pollutants) and are being phased out or substituted by alternative chemistries, including short-chain PFAS or non-fluorinated repellency technologies.

References:
/ Houde, M., De Silva, A. O., Muir, D. C. G., & Letcher, R. J. (2011). Monitoring of perfluorinated compounds in aquatic biota: An updated review. Environmental Science & Technology, 45(19), 7962–7973.
/ Kannan, K., Corsolini, S., Falandysz, J., Oehme, G., Focardi, S., & Giesy, J. P. (2004). Perfluorooctanesulfonate and related fluorochemicals in human blood from several countries. Environmental Science & Technology, 38(17), 4489–4495.