GENERAL DESCRIPTIONTOPAS ® is the trade name of family of cyclic olefin copolymer (COC) resins from TOPAS Advanced Polymers. Topas COCs are made from ethylene and norbornene and can be tailored to exhibit a wide range of heat deflection temperatures (HDT) with a practical upper limit of 340°F (170°C). It is an amorphous transparent copolymer possessing a cyclic olefin structure. The high purity and absence of ionic content in these materials provide high insulation resistance and very low dielectric loss. They also have excellent chemical resistance to aqueous acids and bases and to most polar solvents.
TOPAS is recognized as a resin with optical properties comparable with PMMA (polymethyl methacrylate, acrylic resin), superior heat resistance to PC (polycarbonate), and superior dimensional stability to both PMMA and PC. Topas COCs have a very high moisture barrier, low water absorption, good resistance to hydrolysis and chemical media, and low density. In addition, they typically offer high transparency extending into the UV range, low birefringence, adjustable heat deflection temperature and high rigidity.
* NOTE *
At this time, crystal clear Topas COC is available in 1/2 inch diameter round
rod stock ONLY. Please contact us for recommended machining parameters.
NOTE: We do NOT sell Topas in resin, pellet, or powder forms,
but we will provide that contact information upon request.
Examples of applications for Topas ® COC plastics include films for pharmaceutical and personal health care blister packs, food packaging, medical syringes and vials, diagnostic articles, optical lenses, light guides, and optical sensors. NOTE: All Topas grades are approved for food contact in Europe (EU Plastics Directive 2002/72/EC) and the USA (FDA 21CFR § 177.1520 "Olefin polymers").
TOPAS TKX-0001 GRADETopas ® TKX-0001 Cyclic Olefin Copolymer (COC) is specifically designed for use in optical components or other applications where very high surface quality is desired. Its mechanical properties are somewhat higher than other Topas grades, though its temperature capabilities are in the mid-range with a heat deflection temperature of 260°F (127°C).
TYPICAL PROPERTIES of TOPAS TKX-0001 COC
|Test Standard||Property||Topas TKX-0001|
|ISO 1183||Density (lb/in³)
|ISO 62||Water Absorption, 24 hrs (%)||0.01|
|ISO 527-2/1A||Tensile Strength at Break (psi)||6,670|
|ISO 527-2/1A||Tensile Modulus (psi)||464,000|
|ISO 527-2/1A||Tensile Elongation at Break (%)||1.7|
|ISO 179/1eU||Charpy Impact Strength (KJ/m³)||13|
|ISO 179/1eA||Charpy Notched Impact Strength (KJ/m³)||1.6|
|ISO 11357 (DSC)||Glass Transition Temperature (°F / °C)||
276 / 136
|ISO 75-1,-2||Heat Deflection Temperature @ 66 psi (°F / °C)||260 / 127|
|ISO 306||Vicat Softening Temp B50 (°F / °C)||275 / 135|
|ISO 60250||Relative Permittivity (Dielectric Constant) at 1-10 KHz||2.35|
|ISO 60093||Volume Resistivity (ohm-m) at 50% RH||> 1014|
|ISO 60112||Comparative Tracking Index (CTI)||> 600|
|ISO 13468-2||Degree of Light Transmittance (%)||91|
|ISO 489||Refractive Index||1.53|
NOTE: The values above are based upon testing of laboratory specimens under controlled conditions and represent data that fall within the standard range of properties for these materials. These values alone do not represent sufficient basis for part design and are not intended for establishing maximum, minimum or ranges of values for specification purposes. Any determination of the suitability of a particular material and part design contemplated is the responsibility of the user. To the best of our knowledge, the information contained herein is accurate, but no guarantee of completeness or specific performance is promised or implied, and we assume no liability whatsoever. The products mentioned herein are not intended for use in medical or dental implants.TOPAS is a registered trademark of TOPAS Advanced Polymers, Inc.
All values at 73°F (23°C) unless otherwise noted.