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New IROGRAN® TPU Grade from Huntsman Has Improved Properties for Fire Hoses and Textiles

THE WOODLANDS, Texas Specialty Elastomers experts from Huntsman have developed a new thermoplastic polyurethane (TPU) grade for technical extrusion parts and blown film applications that offers significant improvements over previous generation technologies when it comes to durability, production efficiency and reducing manufacturing waste. IROGRAN® A 85 P 4394 HR TPU is the latest addition to a well-established family of elastomer products from Huntsman, which are renowned for their performance in a diverse range of industrial and consumer applications.

Developed in close partnership with Huntsman’s customers, IROGRAN® A 85 P 4394 HR TPU has greater tensile strength than the standard IROGRAN® A 85 P 4394 elastomer grade originally developed in 2004. The new grade also offers improved film extrusion quality and high melt strength, which makes it ideal for blown film applications. Delivering better resistance to force in its melted state, which makes it less likely that an extruded film will break during production, IROGRAN® A 85 P 4394 HR TPU can help to significantly lower scrap rates, improve manufacturing throughput and cut waste in blown film processing.

IROGRAN® A 85 P 4394 HR TPU is developed to solve the problems of customers in diverse markets including:

  • TPU lay flat hoses used in high pressure industrial and municipal applications e.g., firefighting
  • Textile lamination - as a breathable, waterproof layer for rugged performance apparel.

In the manufacture of TPU lay flat hoses, IROGRAN® A 85 P 4394 HR TPU is applied via the “extrusion through-the-weave” process. In this application, the product’s greater tensile strength is highly advantageous – helping the resulting hoses cycle between periods of being tightly coiled and then extended and put under high water pressure levels. In the case of fire hoses, this pressure can typically be in the region of 8 and 20 bar (800 and 2000 kPa; 116 and 290 psi).

When it comes to textile lamination, IROGRAN® A 85 P 4394 HR TPU is an excellent material for creating a waterproof, breathable film in rugged performance apparel (including gloves and footwear). Blown to create an extremely thin layer, which is then added to fabrics, IROGRAN® A 85 P 4394 HR TPU provides the protective properties needed to create high performance outdoor garments. Adhering well to different kinds of fabrics, IROGRAN® A 85 P 4394 HR TPU can aid the stretch and recovery of the materials it is used on. The nature of the grade also means the resulting films can be engineered to have different surface finishes, including gloss, smooth and matte effects

Trent Shidaker, Global Marketing Director – Elastomers at Huntsman, said: “IROGRAN® A 85 P 4394 HR TPU is a highly versatile and durable elastomer. Soft to the touch, it’s ideal for apparel applications that need to stay in contact with the wearer for hours at a time; but it’s also strong enough to be used in municipal and industrial hoses that have to perform under the toughest conditions. Applying its development expertise, our elastomers team has enhanced the processing properties of IROGRAN® A 85 P 4394 HR TPU, without compromising the key performance attributes expected of products in this range – namely excellent hydrolytic resistance; fantastic wear performance; and microbial resistance. The result is an elastomer that can enable manufacturers to work more efficiently, cut waste and create longer-lasting products; a compelling proposition for the markets we serve.”

The basis of the chemistry of IROGRAN® A 85 P 4394 HR TPU goes back to 2004 when the flagship product was first developed. Later variations of the product were developed to create the family of elastomer products from Huntsman that customers have learned to know and love.

Other IROGRAN® A 85 P 4394 TPU products available from Huntsman include:

  • IROGRAN® A 85 P 4394 – a legacy product, launched in 2004, that was first introduced for thin wall technical parts, thin wall extrusion profiles, spiral hoses, cable jacketing and film and sheet
  • IROGRAN® A 85 P 4394 FCM – launched in 2015, this grade has a similar base chemistry to the standard version of IROGRAN® A 85 P 4394 but is formulated with raw materials that are compliant with FDA regulations for food processing belts and has an NSF 61 rating (approved for potable water applications).
  • IROGRAN® A 85 P 4394 UV – also launched in 2015, this product is fortified with proprietary additives that enable it to withstand UV exposure while maintaining excellent physical properties and appearance. This product is used for pneumatic tubing for airlines and industrial equipment and fracking hoses.

IROGRAN® A 85 P 4394 HR TPU is made at the Huntsman Polyurethanes manufacturing facility in Ringwood Illinois. For more information about the full range of IROGRAN A 85 P 4394 TPU products available from Huntsman, please contact:


About Huntsman:

Huntsman Corporation is a publicly traded global manufacturer and marketer of differentiated and specialty chemicals with 2020 revenues of approximately $6 billion. Our chemical products number in the thousands and are sold worldwide to manufacturers serving a broad and diverse range of consumer and industrial end markets. We operate more than 70 manufacturing, R&D and operations facilities in approximately 30 countries and employ approximately 9,000 associates within our four distinct business divisions. For more information about Huntsman, please visit the company's website at

While all the information and recommendations in this publication are to the best of our knowledge, information and belief accurate at the date of publication, nothing herein is to be construed as a warranty, express or otherwise. In all cases, it is the responsibility of the user to determine the applicability of such information and recommendations and the suitability of any product for its own particular purpose. The sale of products referred to in this publication is subject to the general terms and conditions of sale of Huntsman International LLC or of its affiliated companies.

IROGRAN®is a registered trademark of Huntsman Corporation or an affiliate thereof in one or more, but not all, countries.

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Forward-Looking Statements:

Certain information in this release constitutes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements are based on management's current beliefs and expectations. The forward-looking statements in this release are subject to uncertainty and changes in circumstances and involve risks and uncertainties that may affect the company's operations, markets, products, services, prices and other factors as discussed under the caption "Risk Factors" in the Huntsman companies' filings with the U.S. Securities and Exchange Commission. Significant risks and uncertainties may relate to, but are not limited to, volatile global economic conditions, cyclical and volatile product markets, disruptions in production at manufacturing facilities, reorganization or restructuring of Huntsman’s operations, including any delay of, or other negative developments affecting the ability to implement cost reductions, timing of proposed transactions, and manufacturing optimization improvements in Huntsman businesses and realize anticipated cost savings, and other financial, economic, competitive, environmental, political, legal, regulatory and technological factors. The company assumes no obligation to provide revisions to any forward-looking statements should circumstances change, except as otherwise required by applicable laws.

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