Excellent heat resistance, strength and stiffness
Polyamide Resin

Leona Leona

LEONA™ PFAS-free sliding grade (under development)

PFAS is a collective term for per- and polyfluoroalkyl substances, defined as fluorine compounds that contain at least one fully fluorinated methyl or methylene group (with no hydrogen, chlorine, bromine or iodine attached).

Currently, there are concerns about the impact of some PFAS on the environment and human body, and regulatory frameworks are being discussed and established around the world, including at the United Nations, Europe, and various states in the United States.

LEONA™ PFAS-free sliding grade  (under development) utilizes Asahi Kasei 's proprietary sliding technology to achieve sliding properties that exceed those of fluororesins, enabling compliance with PFAS regulations in a wide range of applications, including automotive, aerospace, and robot parts, building materials, and sporting goods.

LEONA™ PFAS-free sliding grade (development product)

LEONA™ PFAS-free next-generation sliding grade (under development) features

Compliant with PFAS regulations, and exhibits sliding properties that exceed those of fluororesin

Fluorine resin has been widely used as a material with excellent sliding properties, but its use may be restricted under PFAS regulations.

Asahi Kasei has utilized its proprietary sliding technology to develop a PFAS-free sliding grade LEONA™  (under development).

This new grade is a polyamide resin with sliding properties equal to or greater than those of fluororesin, and contributes to reducing the environmental impact as a solution to comply with PFAS regulations.

LEONA™ polyamide resin PFAS-free sliding grade Sliding test/sliding wear test
Comparison of sliding characteristics and limit PV value (*Results based on our test data)

Able to meet a wide range of product and part requirements

LEONA™ PFAS-free sliding grade  (under development) can impart sliding properties to a wide range of polyamide resin material designs without adding fluororesin, thereby increasing design freedom.

While demonstrating sliding properties that exceed those of fluororesins, the addition of a variety of additional properties enables its use in a wide range of applications, including automotive, aerospace, and robot parts, construction materials, and sporting goods.

LEONA™ PFAS-free sliding grade Application cases

Gear box / Gear reducer

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A speed changer that decelerates the speed obtained by the motor to generate the necessary force

https://www.asahi-kasei-plastics.com/wp-content/uploads/2021/03/decelerator.jpg

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Products

Contact us for more information.

Features

  • Friction and wear resistance
  • High stiffness
  • Fatigue resistance

Timing chain guide

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Support parts for automobile engine timing chains. 
Friction and wear characteristics are required since they are in contact with the chain being driven.

https://www.asahi-kasei-plastics.com/wp-content/uploads/2021/03/chainguide.jpg

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Products

1442, PFAS-free sliding grade (Under development: Please contact us for details.)

Features

  • Low friction
  • Low wear
  • High heat resistance

Gears are important components that transmit power. They are used in a wide range of fields, including automobiles, industrial machinery, and aviation, and require low friction, wear resistance, and heat resistance.

https://www.asahi-kasei-plastics.com/wp-content/uploads/2024/09/pfas-free_main.jpg * For illustrative purposes

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15G20, PFAS-free sliding grade (Under development: Please contact us for details.)

Features

  • Compliance with PFAS regulations
  • low friction
  • Low wear
  • Heat resistance

Bearing Cage

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Bearing cages are important components that hold the rolling elements and help ensure smooth rotation, and are required to be heat resistance, low-friction, and wear-resistant.

https://www.asahi-kasei-plastics.com/wp-content/uploads/2024/12/bearings.jpg * For illustrative purposes

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Products

14G25, 14G30, PFAS-free sliding grade (under development, please contact us for details)

Features

  • Compliance with PFAS regulations
  • low friction
  • Low wear
  • Heat resistance

LEONA™ PFAS-free sliding grade related content

Product Data/Tips for Use *Handling Precautions

LEONA™ handling precautions

The content of this document is based on materials, information, and data available at this time, and may be revised based on new findings. Please note that these are provided as information and are not guaranteed. Therefore, when using our products, please take full consideration of the usage environment, design, etc., and use them at your own risk after judging that there is no problem with the product.

1. Handling Precautions

The following are important points to note when handling LEONA™ that we supply to you. Please use them to ensure safe handling of LEONA™.
Please note that we have prepared a separate Material Safety Data Sheet for handling precautions for LEONA™. Please contact our staff and we will send it to you. Please investigate the safety of any additives other than LEONA™ that you use yourself.

(1) Safety and health precautions
Be careful to avoid eye or skin contact or inhalation of gases generated during drying or melting of LEONA™. Also, avoid direct contact with hot resin. We recommend installing local exhaust ventilation and wearing protective equipment (safety glasses, gloves, etc.) during each operation such as drying and melting.

(2) Precautions regarding combustion
LEONA™ is flammable, so handle and store it away from heat and sources of ignition. If it catches fire, it may emit toxic or suffocating gases. To extinguish a fire, use water, foam or dry chemical extinguishers.

(3) Disposal precautions
LEONA™ can be disposed of by incineration or landfill, but disposal should be entrusted to a certified industrial waste disposal company or local government in accordance with the Waste Disposal and Public Cleansing Law. If you incinerate Leona™ yourself, use incineration equipment that complies with the Air Pollution Control Law and other laws and regulations. Incineration may generate toxic gases such as carbon monoxide and suffocating gases.

(4) Notes on storage
Absolutely avoid resin contamination and moisture absorption. Store in a cool, dry place and start molding immediately after opening. Do not pierce the product bag or let it get wet. Also, do not return spilled resin to the product bag. It is a combustible material (synthetic resins) designated by the Fire Service Act, and should be handled in accordance with municipal ordinances. (Fire extinguishing facility, indoor storage facility, etc.)

(5) Precautions for molding
The appropriate resin temperature for molding LEONA™ is 270-310°C. If the temperature is lower than this, there is a risk of localized deterioration of physical properties due to uneven plasticization. On the other hand, if the temperature is higher than this, there is a risk of gas generation due to decomposition and poor appearance such as silver. However, there are some exceptions such as FR200 and FR370, so be sure to refer to the individual catalogs before molding. Also, do not allow LEONA™ to remain in a molten state in the molding machine cylinder for a long period of time. This will cause the resin to decompose and the molded product to discolor or deteriorate. In that case, replace the inside of the cylinder with polyethylene or similar before molding.

2. Usage

  • -LEONA™ should not be used for implantation into the body or for applications involving direct contact with body fluids or infusions.
  • ・When using for other medical purposes, please be sure to contact us in advance.
  • ・Do not use for applications that come into contact with food, such as food packaging containers.
  • ・Please contact us for details.
  • ・If you are considering using our products for other special purposes, please contact us and we will discuss them individually.
  • ・Please contact our person in charge for details on the compatibility of each grade with the Electrical Appliance and Material Control Law, UL standards, CSA standards, etc.

3.Others

Please be aware of industrial property rights when using this product.

Please contact us to ask any questions, discuss any concerns, and request samples.

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