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Performance Polymers##polymer

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LEONAâ„¢ PA66 (polyamide 66)

Engineering plastics superior in heat resistance, strength and rigidity, and other key properties, widely used in the production of electrical and electronic, business equipment, and architectural parts and components.

TENACâ„¢ and TENACâ„¢-C POM (polyacetal)

Engineering plastics with a superior, high-level balance of mechanical and slide characteristics, widely used in the production of electrical and electronic, automotive, and industrial parts and components.

XYRONâ„¢ mPPE (modified polyphenylene ether)

Resins that provide superior heat resistance, flame retardance, dimensional stability, and mechanical properties. Outstanding performance in alloys with polystyrene and with other polymers, for product fields ranging from home appliances to business and IT equipment and automotive applications.

Thermylene® polypropylene compounds

Thermylene® polypropylene compounds are developed and produced by ¸£Àû¼§ Kasei Plastics North America, Inc.

Foamed products##resin

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SUNTEC FOAMâ„¢ and Mefâ„¢

Excellent cushioning performance makes these foams ideal for a wide range of packaging applications, including electrical equipment and precision machinery. Additionally, we offer system sales involving PAOSSâ„¢, a world first cushioning package design optimization software system that combines advanced IT simulation techniques with our rich database of cushioning data.

SunForce™（Engineering Particle Form）

SunForceâ„¢ is a highly functional material with unprecedented design possibilities. In addition to the unique performance of this lightweight thermal-insulating foam, the flame-retardant qualities, dimensional accuracy, and thin-wall molding of the material combine functions beyond those of conventional foams to facilitate a wide range of design proposals in line with the requirements for product and component design.

Fibers##fiber

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LEONAâ„¢ nylon 66 filament

Boasting high tenacity, good heat resistance and lightweight properties, the nylon 66 has found widespread application in the field of industrial materials chiefly for the automotive industry. Today, the Leona filament is highly regarded for its superior quality based on an ideal process of continuous polymerization and direct spinning and enjoys mounting demand as a yarn for automotive air bags, which are experiencing rapid growth worldwide, and as a reinforcing material for aircraft and other tires.

Monomers & related##monomer

Adipic acid, hexamethylene diamine, AH salt, and propionitrile

Asia’s only adipic acid producer with two production bases – one in the ¸£Àû¼§ Kasei production complex at Nobeoka City in southern Japan, and the other in South Korea through production consignment – ensuring a sure, stable supply that meets the widespread and growing demand for adipic acid.
Contact: Nylon Intermediates Marketing ＆ Sales Group (Tel: +81-(0)3-6699-3276 � E-mail: ada@om.asahi-kasei.co.jp)

Cyclohexanol, cyclohexane, and cyclohexene

All produced at the Mizushima Petrochemical Complex in Okayama, Japan, and marketed for use as key nylon production materials and solvents.
Contact: Nylon Intermediates Marketing ＆ Sales Group (Tel: +81-(0)3-6699-3276 � E-mail: ada@om.asahi-kasei.co.jp)

Cleaners##cleaner

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Asacleanâ„¢ purging compound

A high-performance purging compound for plastic molding machines, with a proven track record of use in more than 70 countries worldwide. Its excellent cleaning performance helps reduce operational costs and contributes to lower CO2 emissions.

Chemical intermediates##chemical

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Duranateâ„¢ HDI-based polyisocyanates

A broad array of high-performance HDI-based polyisocyanates, produced by ¸£Àû¼§ Kasei's advanced process and product technology, for non-yellowing polyurethane curing in fields ranging from coatings, inks, and adhesives to cast molding.

Duranolâ„¢ polycarbonatediol

A new polycarbonatediol, for the production of polyurethanes with outstanding resistance to heat, chemicals, and hydrolysis, and superior weatherability. Produced in an array of grades by ¸£Àû¼§ Kasei process technology – for polyurethanes with optimal properties for specific fields of application, ranging from synthetic leathers and synthetic leather binders to adhesives, coatings, TPUs, and spandexes.

Aluminum paste

Advanced metallic pigments that enable unprecedented surface brightness and block design effects, based on world-leading advances in particle processing by ¸£Àû¼§ Kasei, for fields of application ranging from automobiles to cell phones and printing inks.

¸£Àû¼§ Kasei Advance will be integrated with Teijin Frontier effective October 1, 2026. For information on the products handled by the company, please see below.

Press Release (December 1, 2025): ¸£Àû¼§ Kasei Advance and Teijin Frontier to Integrate Businesses for Sustainable Growth