Saving lives – 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®.
Phosphorus chemicals for various applications
- Hordaphos® products are phosphate esters for a variety of applications, e.g. cleaning and metal working
- Red Phosphorus
- Phosphorus Chemicals (other) like polyphosphoric acid, phosphorus pentoxide and specialty organophosphorus compounds
Exolit® OP – Tailor-made flame retardant solutions for electronic and electrical equipment
Plastic components in contact with electrically live metal parts are subject to more and more stringent fire safety regulations. With our sustainable non-halogenated flame retardant Exolit® OP, smartphones and laptops are effectively protected against overheating. For more information please read our Exolit® OP Innovation Spotlight Story here.
What are flame retardants good for?
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.
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.
Product type: Flame Retardants, Phosphorus based Sales range: Exolit Chemical group: Ammonium Polyphosphate Market segments: Flame Retardants, Intumescent Systems Exolit AP 420 is an approx. 45 % clear to cloudy aqueous solution of a short-chain ammonium polyphosphate.
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
Exolit EP® - Epoxy resin with built-in fire safety
Exolit EP 360 and EP 390 are liquid non-halogenated flame retardants based on phosphorus. Both solutions offer a broad epoxy resin compatibility. Therefore no sedimentation in epoxy formulations occur. Our solutions address our customers’ need for solvent-free processing, possible due to low viscosity. They can be used for thin E&E applications due to particle-free system. In addition good FST (fire smoke toxicity) performance enables composite application for transportation.
Hordaphos - Versatile phosphate esters at your service
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.
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.
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.
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.
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.
May 28, 2020
New Clariant additive solutions will add more than just a finishing touch to North America’s industrial coatings
Clariant unveils solutions fit for elevating industrial coatings to the demanding performance and increasing sustainability requirements of North America’s diverse end-users – the automotive, transportation, building & construction, and consumer & household goods industries. more
March 18, 2020
Clariant and Floreon announce collaboration to expand high-performance biopolymer applications to additional markets
Clariant’s Additives business and Floreon- Transforming Packaging Limited announce an exciting new collaboration to further extend the performance properties and market potential of biopolymers, whilst preserving their environmental benefits. more
February 27, 2020
A new high-performance life for plastic waste: Lavergne and Clariant develop halogen-free flame-retardant compounds for electronics based on recycled ocean-bound plastics (OBP)
Clariant teamed up with Lavergne, a world leader in the production of sustainable engineering resin from recycled plastic, to develop halogen-free flame-retardant polyester compounds made from ocean-bound plastics. With the first grade already commercialised, the advance is supporting demand from major electrical and electronics brand owners for flame retarded post-consumer recyclate grades for equipment parts. more
January 31, 2020
Clariant will continue to power its BU Additives production facility in Knapsack, Germany, solely with 100% renewable electricity following the site’s successful pilot switch one year ago. This underlines Clariant’s continued efforts of shifting to the use of renewables for its electricity demand, lowering the impact on climate change. more
November 14, 2019
Clariant turns the spotlight on 3D printed end use functional parts and new material for mobility and E&E trends at formnext 2019
As intelligent industrial manufacturing gains a stronger foothold in production alongside the more established customization/prototyping arenas, Clariant returns to this year’s formnext with new solutions to support the growth. A new halogen-free flame retardant 3D printing material takes center stage alongside eye-catching and unique printed end use parts from a range of applications. more
October 28, 2019
Muttenz, 28-October-2019 - Clariant asked the certified GreenScreen profiler ToxServices to review the assessment of Aluminum Diethylphosphinate (CAS #225789-38-8, “DEPAL”), the key ingredient in Clariant’s Exolit OP phosphinate flame retardants’ product range. The result was again (as an in the previous assessment in 2016) an excellent benchmark 3 “use but still opportunity for improvements”. more
November 15, 2017
Intumescent coatings are widely used to protect steel structures from losing their structural strength during a fire for a certain amount of time, preventing the building from collapse and allowing people to safely evacuate. more
July 22, 2015
Flame retardants are an essential element for the safety of products around us. They reduce the risk of ignition and fire spread of many plastic, textile and construction materials which results in more available escape time for occupants. See here where and how flame retardants act and how they can save lives. more
April 28, 2015
In the 1/2015 issue of the Magazine »Kunststoffe«, Clariants TM team wrote an interesting article about halogen-free flame retardants for bio-based polymers. Topics are wood plastic composites (WPC), PLA compounds and bio-based polyamides. Flame retarded formulations based on Exolit AP and Exolit OP are discussed and already commercial available solutions are listed. more
April 28, 2015
Clariant launched its brand new website after more than a year of development. Packed with features such as responsive web design and a powerful product search engine, visitors can expect a more intuitive navigation experience and a clearer representation of Clariant’s solutions. more
EcoTain - sustainability brochures
Non-halogenated Phosphorus, Inorganic and Nitrogen Flame Retardants
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.
“Flame retardants are essential for the safety of many 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.x
IGSB Interessengemeinschaft Stahl - Brandschutzbeschichtung
The in 2012 under the umbrella of bauforumstahl e.V. organized IGSB (Interessengemeinschaft Stahl-Brandschutzbeschichtung) has set itself the target to offer information and support about modern fire protection systems. It sees itself as a competence center related to fire protection for steel applications. A team of experts is available to provide support and advice to all interested parties. Visit IGSB on www.igsb.info.
The attached brochure is currently only available in German. An English version will follow.
Product type: Flame Retardants, Phosphorus based Sales range: Exolit Chemical group: Ammonium Polyphosphate Market segments: Flame Retardants, Intumescent Systems