Product Information

As clear as glass

Plastics/Polymers Methacrylate Derivatives

PARAGLAS™ and COMOGLAS™

General name
Methacrylic resin sheets
Sales format
Sheets
Examples

Kuraray’s PARAGLAS™ and COMOGLAS™ are methacrylic resin sheets. Methacrylic resin is sometimes called the “queen of plastics” in Japan because of its exceptional transparency and weather resistance compared with other plastics. These features make PARAGLAS™ and COMOGLAS™ popular choices in a wide range of fields. PARAGLAS™ is a cast sheet with excellent surface properties and high purity. It is made using Kuraray’s unique manufacturing technique of injecting a liquid monomer between two sheets of glass and directly curing it. Using batch production for easy toning, we offer a wide array of colored sheets. COMOGLAS™ is an extruded sheet made using Kuraray’s continuous production technologies. It features outstanding thickness precision, with easy bonding and thermoforming.

Applications

Billboards and signs for stores

Advertisement displays and fixtures

Frames for displays

Building materials, water tanks, basketball backboards

Bathtubs

Light guides and diffusers for LED lights

Front panels for automatic vending machines

In-vehicle front display panels

Characteristics

Transparency

Known as “the queen of plastics” for having greater transparency than even glass

Processability

Easily cut, trimmed and bonded. Can be processed into a variety of designs.

Optical properties

Use in liquid crystal-related optical fields due to its high light-transmittance

Weatherability

Can endure extended outdoor use due to its resistance to discoloring and damage

Standard grades and properties

Properties Test methods Units PARAGLAS™ COMOGLAS™ COMOGLAS™
KHC2
COMOGLAS™
HI70
Total light transmittance JIS K7361-1 % 93 93 93 91
Visible light transmittance JIS R3106 % 92 92 92 90
Haze JIS K7I05 % 0.2 0.2 0.2 0.7
Refractive index JIS K7105
1.49 1.49 1.49 1.49
Solar transmittance JIS R3106 % 88 88 88 87
Tensile strength JIS K7113 Mpa1 76 73 73 49
Tensile strain at break JIS K7113 % 6 5 5 20
Flexural strength JIS K7171 Mpa1 120 113 113 74
Young’s modulus in flexure JIS K7171 Mpa1 3200 3200 3200 2200
Rockwell hardness JIS K7202-2 M scale 100 97 97 61
IZOD impact strength JIS K7110 KJ/m2 2.1 1.8 1.8 5.3
Charpy impact strength JIS K7111 KJ/m2 18 17 17 80
Specific heat capacity JIS K7123 J/g・ºC 1.5 1.5 1.5 1.5
Deflection temperature under load JIS K7191-2 (Method A) ºC 105 92 92 84
Linear expansion coefficient JIS K7197 ºC-5 7 x 10-5 7 x 10-5 7 x 10-5 7 x 10-5
Surface resistivity JIS K6911 Ω > 1016 > 1016 > 1016 > 1016
Half-life of electric charge Static honest meter sec
Taper abrasion2 JIS K7204 Haze (%) 18 20 5 -
Falling sand abrasion ASTM D673 Haze (%) 50 52 3 -
Specific gravity JIS K7112 1.19 1.19 1.19 1.17
Water absorption rate JIS K7209 % 0.3 0.3 0.3 0.35

Note: The above figures should be regarded as guide values only and not as binding minimum values.
1. 1MPa=10.2 kgf/cm2
2. Haze (fog) measurement after rotating a cylindrical grindstone (CS-10F) 100 times with a load of 500 g

Related website

Contact us

Click here for inquires (PARAGLAS™ and COMOGLAS™)
Sheets Marketing and Sales Department,
Methacrylate Division
Kuraray Co., Ltd.
Ote Center Building, 1-1-3, Otemachi, Chiyoda-ku, Tokyo 100-8115, Japan
Methacrylate Division
Kuraray Trading Co., Ltd.
Ote Center Building, 1-1-3, Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan
Tel.: +81-3-6701-2035
Methacrylate Division
Kuraray Trading Co., Ltd.
Umeda Hankyu Building Office Tower, 8-1, Kakudacho, Kita-ku, Osaka 530-8611, Japan
Tel.: +81-6-7635-1805