Tolsa to showcase ATO-free, flame-retardant solutions for PVC at K 2025
Last update on Sep 26, 2025
As the plastics industry moves decisively toward safer, more sustainable formulations, Tolsa is leading the way with its ATO-free flame-retardant synergists designed for PVC and other polymer matrices.
At K 2025 (Hall 8B / Stand D46), Tolsa will spotlight its ADINS® range of flame-retardant additives, which have emerged as a halogen-free and antimony trioxide (ATO) free replacement for a range of matrices including PVC, PA, PP, PE and rubber.
Offering heat release reduction and improved anti-dripping
ATO is driving the industry to find safer, more sustainable alternatives. Recently, the ATO market faced unprecedented challenges that resulted from severe supply shortages from China and a marked decline in demand from the United States and other major consuming areas. Supply risk, regulatory scrutiny, and sustainability demands create the perfect environment for ADINS® to lead the market.
“Beyond enabling ATO elimination in halogen-free formulations, ADINS® also improves key flame-retardant properties such as anti-dripping, reduced heat release, and lower smoke generation”, says Marta Sacristán, Functional Additives technical manager at Tolsa.
ADINS® not only replaces ATO but also improves flame retardant properties across multiple axes—including smoke suppression, anti-dripping, and heat release reduction. This comprehensive 360º fire enhancement enables customers to not just substitute but actually upgrade the fire performance of their material in a sustainable way.
Download brochure to enhance fire safety with ADINS®: A greener alternative to ATO
“ADINS® delivers tangible performance upgrades,” explains Antonio Esteban, chief research & Innovation officer at Tolsa. “It’s an industrial leap forward in fire safety that aligns with global shifts toward a more responsible materials ecosystem.”
Not sure which flame retardant fits your needs? Explore our technical guide.
Designed to meet the stringent CPR standard
ADINS® flame retardant products are already validated by major international compounders and producers. One of these success stories comes from Italy’s RDC, which has successfully integrated Tolsa’s ADINS® technology into its Veaflame masterbatch.
The new system has already demonstrated excellent results in halogen-free, flame-retardant (HFFR) compounds for cable manufacturing, designed to meet the stringent CPR standards. ADINS® has significantly reduced peak heat release and smoke production while improving the char structure. ADINS offers a smarter and safer alternative to traditional flame retardants in different systems from polyolefins to rubber.