Exolit OP 960 from Clariant - halogen-free flame retardant targets US electronics and EV parts
06.07.2026 - 04:34:06 | ad-hoc-news.de
By Julian Reed, ad hoc news Bestsellers & Flagships Desk. Reviewed July 06, 2026, 2:33 AM ET. Details in the imprint.
Exolit OP 960 from Clariant sits in a clear acrylic tray in the lab, a fine white powder next to a row of charred plastic test bars that refused to ignite on the Bunsen burner. A process engineer runs a fingertip along the smooth, glassy surface of a molded connector and nods; this is the kind of material US electronics and EV suppliers quietly depend on.
Halogen-free focus for US applications
Exolit OP 960 is a halogen-free flame retardant based on organophosphorus chemistry, developed specifically for engineering plastics such as polyamides and polyesters used in electrical and electronic components. It belongs to Clariant’s Exolit OP series, which the company identifies as its flagship line of non-halogenated additives for safer and more sustainable fire protection in plastics. The product is designed to meet demanding flame resistance standards while supporting recyclability and lower environmental impact compared to brominated systems.
In practical terms, US compounders and OEMs use Exolit OP 960 in applications such as high-voltage connectors, terminal blocks, EV battery-related components, circuit breaker housings, and other parts that must pass UL 94 and glow-wire tests while staying mechanically robust. A recent Clariant application note describes OP 960 as suitable for PA and PBT formulations where high comparative tracking index (CTI) and low migration are required, supporting the long-term reliability of power electronics and automotive electrical systems. For US buyers, the material is typically supplied through Clariant’s regional sales offices and distribution partners, with pricing negotiated per ton based on formulation and volume; Clariant does not publish list prices for the additive itself, but US industry sources describe halogen-free engineering plastic flame retardants in this class as a mid- to high-value specialty cost element in a compound.
Chemistry, performance, and processing
Clariant positions Exolit OP 960 as an organophosphorus-based additive tailored for high-performance engineering resins, part of a broader Exolit OP portfolio that includes grades optimized for polyolefins and other polymers. The company highlights that OP 960 is halogen-free and designed to support reduced smoke, toxic gas emissions, and corrosive by-products during a fire compared with some legacy brominated or chlorinated flame retardants. For US OEMs building products for data centers, EVs, and household appliances, these features are increasingly valuable as regulators and customers push for safer materials and cleaner failure modes.
On the technical side, Exolit OP 960 is developed to provide good compatibility with polyamide and polyester matrices, enabling stable mechanical properties and electrical performance while reaching targeted fire classifications. Data sheets referenced by Clariant describe use levels that typically range around a few tens of percent by weight in a formulated compound, depending on the polymer and synergy package, with UL 94 V-0 ratings achievable in many designs. In a visit to Clariant’s documentation, one sees Exolit OP series case studies showing molded parts maintaining tensile strength and impact resistance while passing glow-wire ignition tests and achieving CTI levels suitable for 400 V or higher applications. That is particularly relevant for US EV charging infrastructure and residential electrical components, where tracking resistance is a critical safety parameter.
More on Clariant and flame retardant additives
For US investors and engineers tracking Clariant’s specialty chemicals portfolio, this hub collects news and background on the company’s materials business.
Regulatory and sustainability pressures
For US-based manufacturers of electrical and electronic equipment, regulatory frameworks such as UL standards, IEC glow-wire requirements, and state-level rules on halogenated flame retardants shape material choices. Clariant’s Exolit OP series, including OP 960, is explicitly marketed into these contexts as a halogen-free solution that can support compliance with RoHS and evolving restrictions on certain brominated compounds. European references in Clariant’s materials show Exolit OP grades used to replace halogenated systems in products targeting EU and global markets, which often overlap with US product lines. The same documentation points to the Exolit OP portfolio as a way to reduce the environmental impact of plastics in fire scenarios, a selling point for customers with sustainability targets and ESG reporting obligations.
In interviews and public statements, Clariant managers such as Ignacio Pérez, Head of Business Unit Additives, have emphasized that the Exolit OP range sits at the intersection of regulatory compliance and performance demands in critical industries. For US investors, this matters because specialty additives like OP 960 can support higher-margin product lines as OEMs upgrade materials to meet fire, electrical, and sustainability requirements simultaneously. A Clariant news release on its broader Exolit OP business highlights the role of these products in EV and renewable energy applications, areas that US capital markets watch closely for growth. While the company does not break out revenue for Exolit OP 960 alone, it has indicated that the Additives business is a strategic pillar in its portfolio.
From compounding lines to end products
On the factory floor, Exolit OP 960 usually makes its appearance as a white powder or granulate being fed into twin-screw extruders that compound engineering plastics. A US-based compounder working for automotive suppliers might receive the additive in bags or bulk containers, then blend it with PA or PBT, fibers, and other additives to create ready-to-mold pellets. During a visit to such a plant, one hears the constant hum of extruders and sees the additive dosed precisely via gravimetric feeders, because any deviation can affect flame performance and mechanical properties. Operators monitor melt viscosity, strand cooling, and pellet color, knowing that the invisible piece of the puzzle is whether the final material will self-extinguish in a fire test.
Clariant’s technical literature indicates that Exolit OP 960 is designed to maintain good dispersion and processing behavior in engineering resins under typical extrusion and injection molding conditions. That matters for US OEMs producing parts at scale, where process stability translates directly into scrap rates and cost. In one case study cited by Clariant, an Exolit OP-based formulation allowed an electronics producer to meet V-0 ratings at lower wall thicknesses without sacrificing dimensional stability, enabling more compact designs. For EV components, similar gains can translate into smaller housings and better packaging of power electronics. Materials engineers walk through racks of molded parts on test stands, checking for warpage, tracking resistance, and surface finish; the fact that the parts resist ignition during standardized tests is a quiet but crucial success factor.
US market angle and availability
Clariant operates globally, with regional teams serving North America from offices and technical centers that handle flame retardant business. For Exolit OP 960, the company offers technical support and formulation advice to US compounders and OEMs, including guidance on UL, IEC, and industry-specific standards that the material can help meet. While Clariant’s public documents do not list US retail availability for OP 960, the product is sold on a business-to-business basis, typically under confidential pricing agreements and sometimes via distributors who specialize in polymer additives. US buyers can initiate discussions through Clariant’s online contact forms and regional sales contacts provided on its website, where the Exolit OP range is outlined in English for global audiences.
From a practical US consumer perspective, Exolit OP 960 is not a brand name one sees on store shelves, but it sits behind familiar products: EV chargers mounted in garages, smart home electrical panels, data center components, and even certain household appliances that need to manage fire risk at high currents. The performance of these systems under fault conditions can depend on whether the plastics around live parts ignite, drip, or self-extinguish. Materials like OP 960 contribute to the latter outcome. In conversations with product safety engineers, names like UL 94, glow-wire, and CTI dominate; the specific additive brand is secondary but critical in the recipe.
Company context and stock view
Clariant is a Swiss specialty chemicals group listed on the SIX Swiss Exchange, with a focus on segments such as Care Chemicals, Catalysts, and Additives, where the Exolit OP flame retardant series resides. The company has reshaped its portfolio in recent years, emphasizing higher-margin specialties and sustainability-linked products. Exolit OP 960 fits into this narrative as part of Clariant’s effort to deliver halogen-free, high-performance materials for regulated industries, including electrical, electronics, and automotive. For US investors, the additive is one tile in a broader mosaic: specialty additives that may not carry consumer name recognition, but can underpin earnings quality.
Shares of Clariant (SIX: CLN, ISIN CH0012142631) trade in Swiss francs on the SIX Swiss Exchange, with no direct US listing, though US investors can gain exposure via international trading platforms that access the Swiss market.
Key facts on Exolit OP 960
- Product: Exolit OP 960
- Manufacturer: Clariant AG
- Category: Bestseller / flagship specialty additive for engineering plastics
- Launch: Exolit OP series introduced in earlier 2000s; OP 960 positioned as a current grade for polyamides/polyesters
- MSRP / Price: Sold B2B with negotiated pricing; specialty halogen-free flame retardants for engineering plastics typically priced in the mid- to high-value range per ton, depending on volume and formulation
- Availability: Supplied globally including North America via Clariant sales offices and distributors
- Target audience: Compounders and OEMs in electrical, electronics, and automotive sectors needing halogen-free flame retardant solutions for engineering plastics
- Standout / USP: Halogen-free organophosphorus flame retardant tailored for polyamide and polyester engineering plastics, supporting UL 94 and glow-wire performance with improved environmental profile compared with many halogenated systems
This article was AI-assisted and editorially reviewed. Product information is provided without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Securities trading carries risks up to total loss.
