COC OKP-A1 OSAKA GAS CHEMICALS Japan大阪燃气化学

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COC塑料是由TOPAS ADVANCED POLYMERSGmbH公司开发出来的环烯烃类共聚物(COC)的商品名,是具有环状烯烃结构的非晶性透明共聚高分子物体。

TOPAS® 具有与PMMA(聚甲基丙烯酸甲酯、丙烯酸树脂)相匹敌的光学性能以及具有高于PC(聚碳酸酯)的耐热性,还由于低吸水性而具有比PMMA和PC更加优良的尺寸稳定性等,在市场上获得了很高的评价。再有,TOPAS® 还具有改善水蒸汽气密性,增加刚性、耐热性,能赋予易切割性等优点,作为适合于用作传统材料的改性用材料,它在包装材料领域里的开发活动正在推进之中。

COC 树脂TOPAS® 是一种基于 的茂金属催化剂技术的高品质和高纯度非晶性环状树脂。在标准要求很严的医疗器械装置和检查诊断器具等医疗领域,作为高品质和高成本的石英玻璃和 PDMS(polydimethylsiloxane)等的替代材料,TOPAS® 具有 特性和性价比。

以欧洲为中心的广大地区正在改用塑料来制作预充注射器以取代玻璃材料。预充注射器可改善制造过程中的破损废品率,减轻重量,不会产生金属类溶出物,同时还具有 的水蒸气阻隔性(长期保存性)以及不亚于玻璃的高透明性等优良特性,因此是玻璃材料的 替代材料。塑料瓶也保持着同样的特性,特别适合需要长期保存的场合。

TOPAS® 也被用于微量滴定板和生物芯片等检测器械。微量滴定板是用于生化分析和临床检查的一种实验和检测器械。用 TOPAS® 制作的多孔型微量滴定板(384 孔)有助于节省作业时间、减少样品用量并使数据更加精密,因而符合一次需要处理多种试样和信息的现代化学和生物学的流程。在对特殊有机溶剂(如 DMSO = 二甲亚砜)和耐热性有要求的 DNA 和蛋白质分析等场合,TOPAS® 堪称 塑料材料。此外,由于荧光自发性低而耐药品(除油类和非极性溶剂)性高,因此也它适用于用 UV 光等来进行检测的容器用途。

在以判定 BSE(疯牛病)和为目的的简易测量仪器中,有望被用作反应池(reaction cell)的生物芯片应具有细微转录性、低荧光自发性和耐热性等。TOPAS® 既可满足上述特性要求,同时还具有其自身的高流动性所带来的高模具转录性以及良好的性价比,因而被认为是面向这一用途的 塑料材料。

Cyclic olefin copolymer (COC) is an amorphous polymer made by several polymer manufacturers. COC is a relatively new class of polymers as compared to commodities such as polypropylene and polyethylene. This newer material is used in a wide variety of applications including packaging films, lenses, vials, displays, and medical devices.
Various types
In 2005 there were "several types of commercial cyclic olefin copolymers based on different types of cyclic monomers and polymerization methods. Cyclic olefin copolymers are produced by chain copolymerization of cyclic monomers such as 8,9,10-trinorborn-2-ene (norbornene) or 1,2,3,4,4a,5,8,8a-octahydro-1,4:5,8-dimethanonaphthalene (tetracyclododecene) with ethene (such as Polyplastics subsidiary TOPAS Advanced Polymers' TOPAS, Mitsui Chemical's APEL), or by ring-opening metathesis polymerization of various cyclic monomers followed by hydrogenation (Japan Synthetic Rubber's ARTON, Zeon Chemical's Zeonex and Zeonor)." These later materials using a single type of monomer are more properly named cyclic olefin polymers (COP).
Chemical and physical properties
Typical COC material has a higher modulus than HDPE and PP, similar to PET or PC. COC also has a high moisture barrier for a clear polymer along with a low moisture absorption rate. In medical and analytical applications, COC is noted to be a high purity product with low extractables. COC is also a halogen-free and BPA-free product. Some grades of COC have shown a lack of estrogenic activity.
The optical properties of COC are exceptional, and in many ways very similar to glass. COC materials offer exceptional transparency, low birefringence, high Abbe number and high heat resistance. The moisture insensitivity of COC is often an advantage over competing materials such as polycarbonate and acrylics. The high flow of COC enables higher aspect ratio (squatter and shallower) optical component fabrication than other optical polymers. High ultraviolet transmission is a hallmark of COC materials, with optimized grades the leading polymer alternatives to quartz glass in analytical and diagnostic applications.
Some properties vary due to monomer content. These include glass transition temperature, viscosity, and stiffness. The glass transition temperature of these polymers can exceed 200°C.[1] COC resins are commonly supplied in pellet form and are suited to standard polymer processing techniques such as single and twin screw extrusion, injection molding, injection blow molding and stretch blow molding (ISBM), compression molding, extrusion coating, biaxial orientation, thermoforming and many others. COC is noted for high dimensional stability with little change seen after processing.
COC and COP are generally attacked by non-polar solvents, such as toluene. COC shows good chemical resistance and barrier to other solvents, such as alcohols, and is very resistant to attack from acids and bases.
Electronic properties of COC are in some respects similar to fluoropolymers, most notably a similarly low dissipation factor or tan delta, and low permittivity. It is a very good insulator.