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TOPAS® COC Cyclic Olefin Copolymer Cyclic Olefin Copolymer

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TOPAS® COC Cyclic Olefin Copolymer Cyclic Olefin Copolymer TOPAS® COC Cyclic Olefin Copolymer Cyclic Olefin Copolymer Important: Properties of molded parts, sheets and films can be influenced by a provided otherwise, values shown merely serve as an orientation; wide variety of factors involving material selection, further additives, such values alone do not represent a sufficient basis for any part part design, processing conditions and environmental exposure. It design. – Our processing and other instructions must be followed. is the obligation of the customer to determinewhether a particular We do not hereby promise or guarantee specific properties of our material and part design is suit-able for a particular application. The products. Any existing industrial property rights must be observed. customer is responsible for evaluating the performance of all parts containing plastics prior to their commercialization.Our products are not intended for use in medical ordental implants. – Unless Published in June 2019 2 TOPAS® COC Contents 1. Introduction 4 2. Grades, supply form, colors 5 3. Physical properties 6 3.1 Mechanical properties 7 3.1.1 Behaviour under short-term stress 7 3.1.2 Behaviour under long-term stress 8 3.2 Thermal properties 8 3.3 Electrical properties 9 3.4 Optical properties 10 4. Effect of service environment 11 on properties of TOPAS® COC 4.1 Behaviour in air and water 11 4.2 Chemical resistance 11 4.3 Stress cracking resistance 12 4.4 Light and weathering resistance 12 5. Food packaging, medical and diagnostic 13 5.1 Sterilizability 13 5.2 Biocompatibility 13 5.3 Regulatory 13 6. Processing 14 6.1 Safety and health information 14 6.2 Injection molding 14 6.2.1 Machine requirements 14 6.2.2 Flow behaviour 14 6.2.3 Gate and mold design 15 6.2.4 Range of processing conditions 15 6.2.5 Shrinkage 16 6.2.6 Demolding 16 6.2.7 Compatibility with thermoplastics 16 6.3 Extrusion/injection blow molding/ 16 extrusion blowing 6.3.1 Film extrusion 16 6.3.2 Injection blow molding/extrusion blowing 16 6.4 Secondary operations 17 6.4.1 Welding 17 6.4.2 Adhesive bonding 17 6.4.3 Metallization 17 7. Typical applications 17 8. Subject index 19 3 Cyclic Olefin Copolymer Effective January 1, 2006, the global COC business has been sold Cyclic olefin copolymers are a new class of polymeric materials with from Ticona/Celanese to the Japanese companies Daicel and property profiles which can be varied over a wide range during po- Polyplastics and transfered into a new entity with the name Topas lymerization. Advanced Polymers. The new company is located in Frankfurt/ These new materials exhibit a unique combination of properties of Germany and Florence/USA and has about 100 people working which can be customized by varying the chemical structure of the in Research & Development, Marketing & Sales, Production and copolymer. Performance benefits include: Administration. ◼ Low density The History of Topas® COC started in the early 90s at corporate ◼ High transparency research of Hoechst AG. In a new developed process first ◼ Low birefringence Norbornene will be synthesized from Dicyclopentadiene and ◼ Extremely low water absorption Ethylene. In a second copolymerisation step with Etylene using Metallocene-Catalysts the final product Cyclic Olefin Copolymer ◼ Excellent water vapour barrier properties is generated. The Topas® COC production plant in Oberhausen/ ◼ Variable heat deflection temperature up to 170 °C Germany went on stream in year 2000 with an annual capacity ◼ High rigidity, strength and hardness of 30,000 tons. ◼ Very good blood compatibility Topas Advanced Polymers is producing and marketing cyclic ole- ◼ Excellent biocompatibility fin copolymers under its trademarks Topas® COC and Crystal Dew® ◼ Very good resistance to acids and alkalis and a bi-cyclic olefin Norbornene. ◼ Very good electrical insulating properties ◼ Very good melt processability/flowability 1. Introduction Topas® COC resins are suitable for the production of transparent Topas® COC is the trade name for Topas Advanced Polymers‘ cyclic moldings for use in optical data storage, optics, e.g. lenses, sensors, ® olefin copolymers (COC). The Topas COC family, in contrast to the and industrial products e. g. in the construction and lighting sectors. partially crystalline polyolefins PE and PP, consists of amorphous, These materials are also of particular interest for primary packaging of transparent copolymers based on cyclic olefins and linear olefins. pharmaceuticals, medical devices and diagnostic disposables. (Co)-extruded films made from Topas® COC offer opportunities in CH2 CH2 CH CH blister packaging, shrink sleeves, shrink films and stand-up pouches. X Y New applications have been developed for blends of Topas® COC, with a variety of polyolefins. 4 TOPAS® COC 2. Grades, supply form, colors Grade Description 8007 Topas® COC resin is currently supplied as an unreinforced water-clear Clear grade with a heat deflection temperature HDT/B transparent material. Glass-filled, tinted and pigmented formulations of 75 °C. It is especially suited for packaging of moisture- are also under development. sensitive products because of its low water absorption and very good barrier properties. Grade 8007 has a lo- Currently available basic grades differ primarily in their heat deflec- wer elastic modulus and higher elongation than other tion temperature HDT/B. The heat deflection temperature is deter- Topas® COC grades. mined by the ratio of the comonomers. Topas® COC grades with higher 5013 Clear grade with a heat deflection temper-ature HDT/B cyclo-olefin content have higher heat resistance. Flow characteristics of 130 °C. This grade is char-acterized by high flowa- may be adjusted independently of heat resistance. bility and excellent optical properties. Recommended The product nomenclature contains a 4 digit number. The first two for applications such as optical parts, e. g. lenses, and digits indicate the viscosity number, the last two digits describe the optical storage media, where low birefringence and high heat deflection temperature HDT/B. The flowability decreases with molding accuracy (pit replication) are essential, as well increasing viscosity number. as for medical and diagnostic applications. The table on the right lists the Topas® COC basic grades. Of these 6013 Clear grade with a heat deflection temperature HDT/B of grades, specific sub-grades are avail-able on request, which are par- 130 °C, a value which cannot be attained by many amor- ticularly well suited for optical, medical and diagnostic applications, phous polymers. Its combination of high purity, chemi- for extrusion and injection blow molded applications. cal resistance, high transparency and high HDT/B makes this material useful for prod-ucts such as labware. Parts made from 6013 can be gamma- and steam-sterilized. 6015 Clear grade similar to 6013, with a heat deflection tem- perature HDT/B of 150 °C, a value which cannot be at- tained by many amorphous polymers. 6017 Clear grade with a heat deflection temper-ature HDT/B of 170 °C. For parts requiring resistance to short-term, high-temperature exposure. 5 Cyclic Olefin Copolymer Fig. 1: Shear modulus curves determined by DIN 53445 for various 3. Physical properties Topas® COC grades as a function of temperature The physical property values of Topas® COC are given in Table 1 below. Most of the properties were determined by standard test methods, as 100000 indicated in the table. 1000 Although the typical values shown in Table 1, determined on develop- 100 ment specimens by various standard test methods, are guide values 10 TOPAS® 8007 and can be used as a basis for comparing different materials, in-ser- TOPAS® 5013, 6013 Shear modulus G [MPa] vice testing, using finished molded parts, is recommended. Also, mold 1 TOPAS® 6015 shrinkage should be evaluated in proto-type parts. TOPAS® 6017 0,1 -80 -40 0 40 80 120 160 200 240 3.1 Mechanical properties Temperature [°C] Topas® COC resin is a clear thermoplastic resin with high strength, rigidity and, depending on the grade, heat deflection temperature. Fig. 2: Stress-strain curves according to ISO 527 Because of its amorphous character, these properties are retained for Topas® COC resins over a wide temperature range, from -50 °C to near the glass transition temperature. Fig. 1 shows shear modulus curves, which are particularly 70 useful in characterizing the temperature-dependent behaviour of a TOPAS® 8007 ® plastic. 60 TOPAS 5013 TOPAS® 6013 50 3.1.1 Behaviour under short-term stress The behaviour of materials under short-term stress can be evaluated 40 by the tensile test according to ISO 527. This test enables yield stress, tensile strength and elongation at break to be determined. Fig. 2 shows Stress [MPa] 30 the stress-strain curves for Topas® COC grades. Note that grades 5013, 20 6013, 6015 and 6017 display similar behaviour. 10 0 0 2 4 6 8 10 Strain [%] 6 TOPAS® COC Table 1: Physical properties of Topas® COC Property Unit Test method 8007 6013 6015 5013 6017 Volume flow index MVR at 260 °C, 2.16 kg ml/10 min ISO 1133 32 14 4 48 1.5 Volume flow index MVR ml/10 min ISO 1133 2 6 5 24 5 at HDT +115 °C, 2.16 kg Density g/cm3 ISO 1183 1.02 1.02 1.02 1.02 1.02 Water absorption % ISO 62 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 (24 h immersion in water at 23 °C) Water vapour permeability g · mm/ DIN 53 122 0.023 0.035 0.035 0.030 0.045 (at 23 °C and 85% relative humidity) m2 · d Mold shrinkage % – 0.1 - 0.5 0.4 - 0.7 0.4 - 0.7 0.4 - 0.7 0.4 - 0.7 (ϑW = 60 °C, 2 mm wall thickness) Mechanical properties, measured under standard conditions, ISO 291 – 23/50 ISO
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