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

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Related articles

Products

For more information, please contact us.

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

Products

1442

Features

  • Low friction
  • Low wear
  • High heat resistance

LEONA™ PFAS-free sliding grade related content

Product Data/Tips for Use *Handling Precautions

Precautions for handling LEONA™

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 items are the main points of care for handling the LEONA™ itself supplied to your company. Please use it for safe handling of LEONA™.
A separate material safety data sheet has been prepared for handling precautions for LEONA™. Please contact us and we will send it to you. We request that your company investigate the safety of additives, etc. that your company uses other than LEONA™.

(1) Precautions for safety and health
Care should be taken to avoid contact with the eyes, skin, and inhalation of gases generated when LEONA™ dries or melts. Also, avoid direct contact with hot resin. It is recommended to install a local exhaust system and wear protective equipment (protective glasses, protective gloves, etc.) for each work such as drying and melting.

(2) Precautions regarding combustion
LEONA™ is flammable and should be handled and stored away from heat and sources of ignition. If it burns, it may generate toxic or suffocating gas. Extinguishing can be done with water, foam or dry chemical.

(3) Notes on disposal
LEONA™ can be disposed of by incineration or landfill, but when disposing of it, please entrust it to an authorized industrial waste disposal company or local public body in accordance with the "Waste Disposal and Public Cleansing Law". Also, when incinerating by yourself, please use incineration equipment and follow laws and ordinances such as the Air Pollution Control Law. When incinerated, toxic gases such as carbon monoxide and suffocating gases may be generated.

(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) Notes on molding
The optimum resin temperature for molding LEONA™ is 270 to 310°C. If it is lower than this, there is a risk of local degradation of physical properties due to non-uniform plasticization. On the other hand, if it is higher than this, there is a risk of gas generation due to decomposition or poor appearance such as silver. However, there are some exceptions such as FR200 and FR370, so be sure to refer to individual catalogs before molding. Also, do not allow LEONA™ to stay in the molding machine cylinder for a long time in a molten state. Doing so may cause the resin to decompose, resulting in discoloration or deterioration of the molded product. In that case, once replace the inside of the cylinder with polyethylene, etc., and then perform molding.

2. Usage

  • ・Do not use LEONA™ for embedding in the body or for direct contact with bodily fluids or infusion fluids.
  • ・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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