Physical Properties

Physical Properties

Introduction and Application of EP Grade

EP is a grade with unique characteristics. Though it has a lower melt flow rate compared to typical SUMIPEX® PMMA grades, it has a higher spiral flow length, meaning that it is ideal for both injection and extrusion usage. To add on, this grade has stronger chemical resistance in comparison to typical SUMIPEX® PMMA grades, hence it is widely used in the automotive industry for manufacturing of rear tail lamps and for applications which requires higher chemical resistance, such as cosmetic bottles and containers.

Comparison of Spiral Flow Length

Comparison of Chemical Resistance

Physical Properties

Physical Properties

Physical Properties

Outstanding Properties of SUMIPEX®

• Unparalleled Transparency and Lustre
• Excellent Weather Resistance
• Unmatched Surface Hardness
• Excellent Electrical Resistance
• Superior Mechanical Property
• Harmless to Humans
• Environmentally-Friendly, Easy to Recycle

Comparison of SUMIPEX® with Other Transparent Resins

The below standards/certifications have been tested on specific SUMIPEX® grades only.

• UL Standard
• RoHs (Restriction of Use of Hazardous Substances) [Directive 2002/95/EC]
• With reference to U.S. 21 CFR Food and Drug Administration (Part 177.1010 Clause B)
• Automotive Safety Standard (FMVSS) [USA]
• AMECA [MH and ME grade for clear, red, yellow, grey and brown]

Ul: Underwriters laboratories
FMVSS: Federal Motor Vehicle Safety Standard
SAE: Society of Automotive Engineers, Inc.

To achieve optimal quality in moulded products, please take note of the following.

Dust Prevention

• Handle SUMIPEX® in a clean/dust-free environment.
• When opening bag, take special care to prevent foreign matters from entering the bag.

Contamination Prevention

• All equipment and parts (E.g. hopper, dryer, barrel, screw, nozzle, etc.) should be thoroughly cleaned before coming into contact with SUMIPEX®.

Moisture Prevention

• SUMIPEX® should be stored in a dry environment.

SUMIPEX® is a thermoplastic, and is flammable and soluble in organic solvents. Before using SUMIPEX®, please refer to the Safety Data Sheet (SDS) separately prepared by us.

The following information are general precautions and guidelines in the handling and storage of SUMIPEX®.

Health and Safety
During the operations of drying and processing of SUMIPEX®, local exhaust ventilation and personal protective equipment (eye goggle, gloves, respirator etc.) are necessary.

• SUMIPEX® releases gases due to drying, melting and thermal decomposition. Avoid inhaling and contact with eyes and skin.
• Do not touch hot resin directly.
• If feeling unwell due to inhalation, rest in a well-ventilated place and if necessary, consult a doctor.

Flammability
Do not use/place SUMIPEX® near flames and other sources of ignition.

• SUMIPEX® is flammable. Should it catch fire, toxic gases containing Carbon Monoxide can be generated due to incomplete combustion.
• In case of fire, use water, carbon dioxide or foam/powder extinguishing media to put out the fire.

Disposal
For disposal of SUMIPEX®, engage an authorised contractor or consult the relevant local government agencies. Disposal should be conducted in accordance with state and local regulations.

Storage

• SUMIPEX® should be stored in accordance with state and local regulations.
• In case of spillage, remove pellets immediately to prevent potential slipping hazard.
• SUMIPEX® should be kept away from direct sunlight, water and moisture and bestored at ambient temperature.

Others
All technical information and data in this brochure are believed to be accurate and reliable. However, we do not guarantee results, freedom from patent infringement, or suitability of our products for any resultant application.

We have now entered an era in which greater importance is being placed on environmental issues. In addition to its benign physical properties as a methacrylate resin, SUMIPEX® contributes to conservation of resources through its prolonged and incomparable weather resistance, serving its many applications for long periods of time. Moreover, SUMIPEX® at high yields can be reduced to its monomer form through thermal decomposition, then chemically recycled and utilised as a raw material for new resin production. Furthermore, no particularly harmful gases, such as dioxins, are produced when waste resins are incinerated, as the resins do not contain halogens. Under normal combustion conditions, SUMIPEX® breaks down completely into water and carbon dioxide; adding only minimum burden on the environment. People have been using methacrylate resins ever since the beginning of their commercial production in the 1940s. This versatile plastic is still being used in myriad applications, even into the 21st century – the century of the environment – due to its outstanding characteristics.

Methyl Methacrylate (or more commonly referred to as MMA monomer) is colourless liquid that is the basis material for Polymethyl Methacrylate (SUMIPEX® PMMA).

Polymethyl Methacrylate (SUMIPEX® PMMA polymer) is a kind of thermoplastic resin, which is flammable and also soluble in an organic solvent.

The SUMIPEX® PMMA polymer finds its use across various industries and applications owing to its favourable properties like aesthetics, scratch resistance and thermal resistance. SUMIPEX® PMMA is extensively used in these industries:

• Homeware Applications
• Automotive Applications
• Electronic Displays
• Lighting
• Cosmetic Packaging
• Optical lenses

Yes, it is. In fact it is one of the few plastic materials that can be reversed into its original monomer liquid form through a cracking process. Once reversed into the original liquid form, it can be reused for other applications.

SUMIPEX® PMMA has excellent resistance to abrasion, aging and weathering; hence it doesn’t undergo much colour change even after years of outdoor exposure.

Please submit your request through pmmasales@sumitomo-chem.com.sg with your details such as location, product, quantity requirements and contact information. We will shortly follow up with you.

We have authorised distributors in multiple regions with ready stock-points for general purpose grades which can typically be delivered within a few days after receiving orders. Please submit your request through pmmasales@sumitomo-chem.com.sg and we shall be in touch with you for further discussions.

If you wish to obtain a copy of our printed product catalog, please email to pmmasales@sumitomo-chem.com.sg and we will be in touch with you shortly.

We are always glad to provide free samples to interested customers. Please submit your request through pmmasales@sumitomo-chem.com.sg with information on your company and purpose of usage. We shall respond to you accordingly.

SUMIPEX® PMMA is manufactured by free radial vinyl polymerisation process using MMA monomer.

SUMIPEX® PMMA (density= 1.19kg/m3) is a much lighter option as compared to glass (density=2.5kg/m3).

The optical property of SUMIPEX® PMMA (Total light transmittance=92.6%) is also higher as compared to glass (Total light Transmittance=90.2%).

SUMIPEX® is also known as acrylic glass, a good alternative to glass as it is safer option due to its shatter proof characteristics.

SUMIPEX® molding materials are available in a variety of different grades. Each grade possesses the special characteristics unique to acrylic polymers, thus allowing usage in a wide range of applications. SUMIPEX® can be chosen from numerous selections in accordance with the particular desired usage.

SUMIPEX® is made to have more durability properties compared to other transparent plastics.

Comparison of SUMIPEX® PMMA vs other transparent plastics:

SUMIPEX® PMMA= Poly(methylmethacrylate), PC= Polycarbonate, PVC= Poly (Vinyl Chloride), PS= Polystyrene, SAN= Styrene Acrylonitrile, MS= Methylmethacrylate Styrene, PETG= Poly (ethylene terephthalate glycol modified)

The following chart illustrates the value of pencil hardness. The higher the pencil hardness value means more scratch resistance.

SUMIPEX® PMMA exhibits the lowest yellowing among all transparent plastics after years of outdoor weathering. These unique properties of SUMIPEX® PMMA make it a valued and unmatched material for outdoor applications.