Clariant MasterBatches及其包装市场集团认识到回收是循环经济的基础，它正在动员大量资源，以帮助确保将更高百分比的塑料包装被回收。
“Today’s recycling efforts have an important impact on plastics in the environment,”Clariant MasterBatches全球包装负责人Alessandro Dulli说，“and it is still only a beginning. We can recover – we must recover – much, much greater volumes and turn the vast amount of packaging waste into new raw material. To do that, we need to overcome major challenges around the capabilities of proper sorting of waste to produce a high-quality PCR [post-consumer recyclate], and around issues related to coloration, stabilization, product safety and process stability. At Clariant, we are committed to bringing our knowledge in chemistry, applications and markets to bear on the problem.”
Clariant has begun establishing a dedicated team to understand these dynamics and reduce these risks, to remain at the forefront of products and technologies that increase the quality of PCR. Already, substantial resources are available in the form of new and existing additive and colorant technologies that include products that prevent damage or loss of performance properties during recycling and others that actually repair damage that inevitably occurs as polymers are processed, used and then reprocessed. Among those that prevent damage are:
- 抗氧化剂 - 热量和暴露于氧气的结合会导致塑料失去机械性能或变色，而黑点可以形成。这些中的任何一个都可以使材料不适合重复使用。Clariant Cesa®-nox antioxidants, added during PCR compounding or the production of new packaging made of recycled material, prevent these problems.
- Processing Aids – The melt behavior of PCR polymers differs from that of virgin material, which leads to a higher risk of build-up around the die, where it can degrade and become discolored. CESA-process additive masterbatches effectively reduce this effect and provide for smoother processing.
To heal or repair damage done to recycled resins, Clariant has developed several additives. Three examples operate on a molecular level:
- 链扩展器 - 像PET聚酯这样的冷凝聚合物在回收过程中特别容易受到损害。水分，溶剂和热量会导致聚合物链分解，从而导致加工性损失，分子量和重要的材料特性。为了在高价值产品应用中取得成功，需要修复这种退化的材料。在处理过程中添加时，CESA扩展重新链接聚合物链会因退化而破裂，恢复关键特性并使使用再生材料更容易。亚博网站下载
- Modifiers – Even if polymer chains cannot be completely repaired, these CESA-mod additive masterbatches reduce brittleness and increase impact strength enough to allow bottles and containers made of PCR to better meet top-load and drop-test standards.
- 颜色校正 - 为了克服回收塑料中发生的颜色转移，Clariant提供了不同的解决方案来满足客户需求：已经创建了PCR颜色系列，即使在再生聚合物具有不良的色调时，也可以使品牌所有者开发出美丽的颜色；其他CESA添加剂主体可以补偿透明和半透明应用中的淡黄色变化。
IMPROVED SORTATION
Sorting is a critical element in the drive to increase the volume plastics packaging that is recycled, and Clariant is helping. For instance:
- Detecting Dark Colors – Standard black plastic containers, colored with pigments that use carbon black, are currently very difficult to detect by sorting machines in recycling plants as they absorb the near infra-red (NIR) light used for sorting. Clariant’s new CESA-IR masterbatches and alternative pigment systems allow black and dark-colored plastics to reflect NIR light, so they are visible to the sorting sensors.
- Marking Additives – Clariant is working to develop a new sort of taggant to improve the efficiency of the sortation process. The idea is to mark specific applications (e.g. HDPE caps) so that the material can be processed separately, retaining more of its value and potentially allowing it to be re-used in the same application.
“这是我们今天关注的最大关注的地方。”says Mirco Groeseling, Global New Business Development Manager at Clariant,“我们可以提供完整的投资组合CESA添加剂主体以及Renol®& REMAFIN®color solutions, to help overcome today’s most critical recycling challenges. People can find out more by contacting us at[email protected]透明
通过可持续的创新和合作，发现有关Clariant如何为塑料提供循环经济的更多信息。在10月17日（星期四）上午8:15媒体早餐的“合作交响曲” K 2019媒体活动的“交响曲” K 2019媒体活动中会见了克拉里安特的领导者和合作伙伴，随后是上午9点新闻发布会，Booth 8AJ11。注册www.clariant.com/k2019或通过电子邮件向Stefanie Nehlsen发送电子邮件[email protected]。
Source:http://www.clariant.com