ADDITIVES | FLAME RETARDANTS


SFR100 Synergistic performance in PC


Source: Momentive


*Medium viscosity PC, **Phosphate FR additive, *** PTFE.


commonly used as flame-retardant and antidrip agents in thermoplastics. While various sectors have lengthy proposed transition periods to allow for implementing alternatives, the proposed ban is already having an effect due to insecurity of supply of PFAS-containing materials as well as public concern, the company said. In the past year, the company developed formula- tions based on Nofia polyphosphonates for PC and PC blends as alternatives to KPFBS-based formulas from both cost and performance perspectives. “For manufacturers currently making PTFE-con- taining PC compounds, Nofia copolymers CO6000 and CO6010-EX have emerged as the material of choice for KPFBS replacement,” said Ruben Pleijzier, Chief Commercial Officer, FRX Polymers. “Nofia copolymers need no drying before com- pounding with PC. Flame-retardant PC based on Nofia copolymers can achieve V-0 at 0.4-0.5 mm while maintaining 100% ductility, like pure PC, and high heat deflection temperature.” Another test for flame-retardant PC is the F1 test


for materials suitable for outdoor use, which includes retaining notched Izod resistance after being


Right: Avient has launched ECCOH XL 8054, which is part of the ECCOH XL Cross-Linkable Flame Retard- ant Solutions portfolio for wire and cable


immersed in water at 70° C or 82° C for seven days. Because Nofia FRs are polymeric and non-migrating, they allow PC compounds to pass this test. Momentive has introduced SFR100, a siloxane available as a liquid and also in masterbatch form, that can be used as an FR synergist with organic and inorganic FRs in HFFR formulations in engi- neering thermoplastics including PA and PC. The company said that the synergist is already being used in PC and has reduced flaming drip, inhibited flame propagation, and reduced smoke density. It would allow the amount of primary FR to be reduced while maintaining FR performance. The additive can also be used to replace PTFE in an anti-drip function. A masterbatch for transparent PC applications with a phenyl methyl silicone in a PC carrier is also available.


E&E and construction The latest from Avient is a new line of nonhalogen- ated flame retardants designed for applications where limiting smoke and fumes is of primary importance. Cesa Max FR Additives can help end-use products pass increasingly stringent UL 94 standard test methods, including UL94 V0-V1-V2, 5VA, and 5VB compliance standards. Internal testing performed in the company’s accredited A2LA Corporate Analytical Testing & Characteriza- tion Lab demonstrated that Cesa MAX FR additives can provide significantly lower heat release rates over time compared to conventional flame retard- ants, potentially limiting fire spread and damage, the company reported. “Our new Cesa MAX FR additives incorporate non-halogenated flame retardants at our highest achievable loading levels of fire safety performance ingredients in a single masterbatch,” said Felipe Reichert, Global Marketing Director for Colour, Additives & Inks at Avient Corporation. The additives are formulated with optimised let-down ratios for a cost-effective solution for a range of applications. Another new flame retardant from Avient,


16 COMPOUNDING WORLD | December 2025 www.compoundingworld.com


IMAGE: GETTY/AVIENT


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