Flame-retardant regulations are no longer a background constraint for manufacturers of electronics and electrical components and connectors. They are actively reshaping which material systems make sense to design around—and which ones are becoming increasingly difficult to justify.
Across varied applications including vehicle power systems (including high-voltage systems in EVs), household appliances, renewable power generation and distribution infrastructure, circuit breakers, switches and outlets, OEMs are discovering that long-established flame-retardant solutions depend on chemistries that face growing regulatory, supply-chain, and lifecycle risk. What once looked like a stable material choice is now a moving target.
This shift is not temporary. It represents a structural reset in how flame retardancy will be achieved going forward—and it creates a clear opportunity for OEMs to rethink material strategy, reduce long-term risk, and unlock better part performance at the same time.
Much of the current installed base of flame-retardant materials relies on combinations of halogenated flame retardants (including decabromodiphenylethane [DBDPE]) , PFAS, and antimony trioxide (ATO). Each of these additives now carries increasing regulatory or supply-chain exposure.
PFAS restrictions are advancing through EU proposals and accelerating at the U.S. state level, creating uncertainty for OEMs selling into multiple regions. DBDPE is listed as a Substance of Very High Concern under EU REACH. Global ATO supply is highly concentrated, driving price volatility and availability risk, while also being difficult to remove from existing PBT formulations without extensive reformulation.
The practical consequence for OEMs is not simply future compliance risk. It is repeated reformulation, requalification cycles, additional testing, internal engineering effort spent maintaining legacy designs, and growing uncertainty over whether today’s compliant formulation will still be acceptable tomorrow.
In effect, many flame-retardant materials, largely utilizing polybutylene terephthalate (PBT) resin, are now on a treadmill: staying compliant requires constant adjustment, but the destination keeps moving.
But there are better options.
As regulatory pressure removes entire classes of flame-retardant additives, materials increasingly have to earn their performance through inherent thermal and mechanical capability rather than chemical workarounds.
This is where the regulatory shift becomes an opportunity rather than a burden.
Nylon 6,6 (PA66) has fundamentally higher thermal stability, strength retention, stiffness, and durability at elevated temperatures than PBT. When flame retardancy must be achieved without halogens (including DBDPE), PFAS, or ATO those intrinsic properties matter more and provide far more design flexibility.
Ascend’s Starflam® portfolio of halogen-free nylon resins and compounds is designed specifically for this new reality: delivering UL 94 V-0 flame retardancy without restricted chemistries, while improving performance in demanding electrical and electronic applications.
Our Starflam portfolio enables OEMs to step off the reformulation treadmill entirely. By eliminating halogens (including DBDPA), PFAS, and ATO, it significantly reduces regulatory exposure while simultaneously improving key design-critical properties.
Compared with flame-retardant PBT, Starflam materials consistently offer:
Lower density, enabling up to 20% weight savings
34% higher stiffness at 150 °C, supporting dimensional integrity at elevated temperatures
Superior strength retention, requiring up to 48% less material to achieve the same breaking force as PBT
Significantly improved creep and fatigue resistance, with approximately 64% less PA66 required to match PBT performance under continuous tensile load at 85 °C over 100 hours
Faster molding cycles, with 20–30% faster cooling, translating into roughly 10–15% reductions in machine and operator time
Lower shrinkage and reduced warpage, supporting tighter tolerances and thinner-wall designs
These are not marginal gains. They directly address the failure modes and design constraints engineers manage daily—especially as components become smaller, hotter, and more mechanically demanding.
Starflam compounds are engineered for electrical and electronics applications, offering:
UL 94 V-0 flame retardancy without PFAS
More than 100 UL approvals
Higher Comparative Tracking Index (CTI)
Strong performance under 85 °C / 85% relative humidity conditions
Resistance to thermal runaway and direct flame exposure
Elimination of SVHC and PFAS reporting obligations
By enabling lighter, thinner flame-retardant designs, Starflam expands design freedom rather than constraining it—turning regulatory compliance into a platform for better engineering outcomes.
Moving from flame-retardant PBT to halogen-free nylon is not a drop-in substitution. Differences in shrink rate, moisture behavior, and processing require engineering consideration. That’s why Ascend supports OEMs through application development, early-stage design guidance, mold-flow analysis, and processing optimization.
For OEMs already facing compliance pressure, proactively transitioning to Starflam reduces long-term operational risk and avoids repeated material changes driven by evolving regulations.
Flame-retardant regulations are no longer just tightening—they are reshaping which material systems make sense to build products around. OEMs can continue investing in legacy PBT solutions that require ongoing defense and reformulation, or they can move to inherently higher-performing polymers that align with the regulatory direction of travel.
Starflam is designed for that future: halogen-free, regulation-resilient, and engineered to perform where it matters most.
In a landscape defined by uncertainty, Starflam offers compliance certainty—and the freedom to design better parts.