Flame Retardants

Saving live – saving health

Our non-halogenated flame retardants provide environmentally more compatible protection for buildings, electric and electronic equipment as well as textiles and other materials used in airplanes, trains, busses and ships. Clariant’s portfolio is based on phosphorus chemistry, with production sites in Knapsack, Germany, Muttenz, Switzerland and Lufeng, China. Clariant's flame retardants are all marketed under the trade name Exolit®.

Exolit OP, Exolit APExolit RPExolit VF

Flame retardants are an essential element for the safety of products around us. To see where and how flame retardants act and how they can save lives please click here.

Phosphorus chemicals for various applications
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Britta Hackler

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  • Applications

    • Thermoplastics

      The performance profile required of modern flame retardants has changed significantly in recent years. Alongside their effectiveness in the event of a fire, environmental considerations play an increasing role in all phases of the product life cycle – from production and processing through to actual use and end-of-life recycling. more

    • Thermosets & Fibers

      With its Exolit® grades Clariant offers an extensive range of non-halogenated flame retardants for thermosets based on phosphorus chemistry. more

    • Intumescent Coatings

      An intumescent system is a combination of various compounds that in the event of fire react together as a result of the temperature increase to form a carbon foam. This foam attains a thickness of 10 to 100 times of the originally applied coating and insulates the substrate material through its low thermal conductivity. more

    • Phosphorus Catalysts, Cleaning & Metal Treatment

      Clariant is Europe's leading producer of phosphorus pentoxide and polyphosphoric acids. These raw materials are widely used in the production of surfactants as well as organic intermediates for the color, pharmaceutical and vitamins industries. more

  • Product Lines
    • Exolit OP®

      Exolit OP - Unique chemistry for your safety

      The Exolit® OP series comprises two non halogenated, organo-phosphorus flame retardants families:

      Exolit OP 12xx and 13xx – with x designating a digit: Based on phosphinate chemistry, these flame retardants are especially suited for demanding applications in the electric and electronic sector. There are optimized formulations for engineering thermoplastics like polyamides (Exolit OP 13xx and the latest addition Exolit OP 1400 (TP)) and polyesters (Exolit OP 12xx). The Exolit OP 93x series was developed for epoxy resins in printed circuit boards and other adhesive and thermoset applications.

      The Exolit OP 5xx series for polyurethanes: They are reactive flame retardants which integrate into the polyurethane matrix like a polyol. They show no migration, are more effective than the usual additive flame retardants and have only a minimal impact on the material properties

       

      OP550_structure

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    • Exolit AP®

      Exolit AP - Sophisticated chemistry in a simple formula

      Ammonium polyphosphate - a polymeric flame retardant material - is the basis for the Exolit® AP product family, which, as a result of modification and synergist mixtures, covers a very broad application spectrum.

      Exolit AP 422 and Exolit AP 462 are high-quality additives for intumescent coatings. Even at layer thicknesses of less than 1 mm they achieve fire resistance times of over 30 minutes. Apart from the protection of steel structures in buildings, application areas include cable and wood. In addition, the fire properties of textiles and papers can be improved with intumescent coatings based on Exolit AP. In the case of thermosets like epoxy resins and unsaturated polyester resins, Exolit AP 422 paves the way for the production of lightweight components with low solids content. In polyurethane rigid foams that are used e.g. for insulation purposes by the building industry, low smoke density in a fire and avoiding flame retardant migration are important criteria. PUR Foams with Exolit AP 422 can also be recycled.

      Combined with synergists, ammonium polyphosphate becomes highly effective in polyolefins (polypropylene and polyethylene). The whole Exolit AP product family is characterized by extremely low smoke density. Exolit AP is non-toxic, and does not accumulate in the environment, since it is (bio-)degradable by breaking down to naturally occurring ammonia phosphate.

      APP_structure

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    • Hordaphos®

      Hordaphos - Versatile phosphate esters at your service

      Chemical background

      The Hordaphos® product group encompasses a range of phosphoric acid esters. The Hordaphos grades are produced by the reaction of phosphorus pentoxide or polyphosphoric acid with an alcohol, whereby a mixture of mainly mono- and diesters and small amounts of triester and phosphoric acid is obtained.

      Properties

      A phosphoric acid ester is as acidic as phosphoric acid and has similar phosphatizing properties. Due to the additional alcohol chain it is far less corrosive. The ionic phosphate functionality imparts antistatic properties to the molecule. Furthermore, when combined with a long chained alcohol the substance (e.g. Hordaphos 222) can be given strong dispersing properties. Thus, depending on the chain length and branching of the alcohol, the Hordaphos grade can be emulsifying, foam regulating, dispersing, wetting, dissolving, etc.

      Application

      As multifunctional additives they are used especially in household and professional cleaning products, but also in pigment pastes, paints, coatings, cosmetics, in formulations for metal working and metal cleaning, in textile production, crop protection, mining etc. Depending on the Hordaphos grades, the substance acts as a mild acid, corrosion inhibitor, brightener, antistatic agent, wetting agent, dispersing and/or emulsifying agent.

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    • Phosphorus Chemicals

      Phosphorus Chemicals - Oxidation state bingo for the advanced

      We are experts in creating solutions for our customers' needs. Clariant is a leading producer of phosphorus pentoxide and polyphosphoric acids in Europe. These raw materials are widely used in the production of surfactants as well as organic intermediates for the color, pharmaceutical and vitamins industries. Further applications are cleaning, plasticizing and the usage in specialty synthesis.

      Phosphoric acids and derivatives

      Starting from white phosphorus we manufacture inorganic products such as red phosphorus, phosphorus pentoxide and polyphosphoric acids. Our organic phosphorus products include various phosphate esters used for cleaning and plasticizing as well as derivatives of phosphonic and phosphonus acid used for specialty synthesis.

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    • Flammability Testing Services

      Flammability Testing Services

      In the course of developing new flame retardants and formulations we carry out flammability tests in our laboratories in Knapsack and Gersthofen, Germany. To our customers, we also offer flammability testing as a service, e.g.

      • Flammability (UL 94 / DIN 4102 B2)
      • Glowing wire test (DIN EN 60695-2-10/12/13)
      • Limited oxygen index (ISO 4589)

      In our laboratory at Knapsack, Germany, we can compare the performance of a range of different intumescent coating formulations using standard fire tests. Thereby, we can support our customers in developing new formulations for meeting new standards or challenges in fire safety requirements. For more information please get in touch with us.

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  • Brochures & Videos

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  • PINFA

    PINFA

    Non-halogenated flame retardants – PINFA

    Clariant is a founding member of the organization for non-halogenated Phosphorus, Inorganic and Nitrogen Flame Retardants, PINFA, a sector group of Cefic, the European Chemical Industry Council. 

    Pinfa_Logo_2362x736

    “Flame retardants are an essential element for the safety of products around us. Fires are far less likely to start from small flames or electrical faults, if materials resist these ignition sources.”

     

    pinfa is the Phosphorus, Inorganic and Nitrogen Flame Retardants Association and is a Sector Group within Cefic, the European Chemical Industry Council. pinfa represents the manufacturers and users of non-halogenated phosphorus, inorganic and nitrogen flame retardants (PIN FRs).

    The members of pinfa share the common vision of continuously improving the environmental and health profile of their flame retardant products. Therefore, pinfa members seek to dialogue with the users of PIN FRs in order to identify their needs and technologies they are looking for.

    pinfa also co-operates with national & supranational organisations (EU, OECD, United Nations) & other industry associations, consumer organisations & non-governmental organisations and will ensure the development of scientific knowledge related to the whole life cycle of PIN FRs.

    pinfa works in close cooperation with its sister association pinfa North America, the North American Phosphorus, Inorganic and Nitrogen Flame Retardants Association located in USA.

     

     

  • News & Events
    January 13, 2015

    Clariant highlights process-, energy- and cost-saving solutions

    Clariant, a world leader in Specialty Chemicals, will show its support for greater sustainability across the industrial, decorative and automotive applications with new products and advanced solutions for the global paint and coatings community at the European Coatings Show 2015 in Germany (Booth 7-123). more

    October 22, 2014

    US EPA: Clariant Exolit® OP 560 flame retardant superior for furniture upholstery

    Clariant, a world leader in specialty chemicals, has announced that its Exolit OP® 560 Flame Retardant has been designated by the U.S. Environmental Protection Agency (US EPA) as a safer, more environmentally friendly flame retardant for polyurethane (PUR) foam used in furniture upholstery and other consumer products than the traditional formulation, pentabromo diphenylether (pentaBDE). more

    October 14, 2014

    Clariant exposes Exolit®'s outstanding and sustainable flame retardancy for composites

    Clariant, a world leader in specialty chemicals, is demonstrating the added sustainability value of its Exolit® halogen-free flame retardants to composite manufacturers. more

    October 03, 2014

    Clariant’s Exolit® OP 560 confirmed as safer flame retardant for PU foam

    marketed under the trade name Exolit® OP 560 – as a safer alternative to pentabromo diphenylether (pentaBDE), traditionally used for giving fire protection to foam. more

    July 02, 2014

    Exolit OP 1400 TP enables polyamide 66 compounds to achieve the highest material ranking according to the new European railway Norm

    In March 2013, a new European standard for fire safety in the railway sector EN 45545 has been implemented. The new standard consists of 7 parts and the EN 45545-2 describes the test methods as well as the specific requirements that all on board material need to fulfill. According to the EN 45545:2013, all materials on board are classified in groups and have to fulfill specific “Requirement Sets” which often includes several test methods such as smoke toxicity, optical density as well as flammability. Three different material rankings, known as “hazard levels” HL1-3, are defined within each requirement where HL3 represent the highest safety level. Thus, depending on the size of the final part, its placement within a wagon, the type of vehicle it is placed in and where the vehicle travels, a material should fulfill one or more specific requirements and specific hazard level. more

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Disclaimer:
This information corresponds to the present state of our knowledge and is intended as a general description of our products and their 

possible applications. Clariant makes no warranties, express or implied, as to the information’s accuracy, adequacy, sufficiency or freedom
from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining
the suitability of Clariant’s products for its particular application.

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in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes in our products and applicable
national and international regulations and laws, the status of our products could change. Material Safety Data Sheets providing safety
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