The most authentic domestic technology source project has been successfully put into operation! The technical origins of other projects will not be commented on for now; opinions need to be reserved! !
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On May 20, the 30,000-ton-per-year caprolactam-to-adipamide production project operated by Yongrong Technology, a subsidiary of Yongrong Holding Group, was completed in its entirety. The plant started up successfully on the first attempt, producing high-quality adipamide products; this marks a significant step forward in breaking foreign restrictions in the field of key raw materials for nylon 66 and ensuring the security of China’s nylon industry chain. Hexamethylenediamine is a key intermediate in the production of nylon 66. For a long time, the production technology for adiponitrile, a key upstream raw material, has been tightly monopolized by foreign companies. The current global mainstream process involves producing adiponitrile via the butadiene method and then using it to manufacture adipamide. This approach is not only highly sensitive to fluctuations in raw material prices, but also faces significant challenges in terms of overcoming key patents and technical barriers. Against this backdrop, Yongrong Holding Group adopted the innovative process of \"direct production of hexamethylenediamine from caprolactam,\" thereby breaking away from its traditional reliance on hexanitride and achieving a technological leap from a \"single source\" to \"multiple independent sources.\" This process boasts significant advantages, such as a simplified procedure, low investment costs, high safety, and a high raw material conversion rate. The production cost per ton has been significantly reduced compared to the butadiene-based method, thus injecting a cost-effective and highly controllable new driving force into the development of China’s nylon 66 industry. The design and construction of this project officially commenced in 2025; completion was achieved in February 2026. The aminocapronitrile unit started up for trial operation at the end of April, the hexamethylenediamine unit began receiving feed on May 14, and pure hexamethylenediamine was successfully produced by May 19. Second, top-quality products are produced right after driving. The hexamethylenediamine produced in the first batch of production from this project meets all international standards in terms of its various specifications, thus fully satisfying the requirements of high-end polymerization applications downstream. During the commissioning of the project, each process on the single line quickly reached its operating capacity right after the initial feeding, and it operated at the designed load within a short time. All process parameters remained stable and normal, enabling a seamless transition from simply getting the system up and running to operating it efficiently and at full capacity. A responsible official from Yongrong Holding Group said that by building on its strong upstream industrial foundation, ranging from pure benzene to caprolactam, the group has expanded into downstream areas such as hexamethylenediamine and nylon chips for high-end applications. This effort has accelerated the development of a dual-chain industrial cluster for \"nylon 6 + nylon 66\", encompassing upstream raw materials, midstream monomers, and downstream products. It has also filled the gap in hexamethylenediamine production in the East and South China regions, thereby enhancing the resilience and security of China’s nylon industry chain. In the future, Yongrong Holdings will continue to enhance cost reduction through the integration of research and development with production, expand the scale of its adipic acid and nylon 66 operations, and make every effort to achieve domestic substitution for key materials such as nylon 66.
News from 2026? I remember reports last year stating that the capacity under construction for nylon 66 had already exceeded demand.
After reading the entire article, it’s clear that this project represents a significant breakthrough. In particular, the route of “direct production of hexamethylenediamine from caprolactam” bypasses the traditional patent barriers and raw material constraints associated with adiponitrile. This has great significance for ensuring self-reliance and control over China’s nylon-66 industrial chain. The concerns about overcapacity mentioned in the comments are also valid; here are a few personal insights for reference: The difference in cost structures is key – the traditional butadiene method’s costs are heavily influenced by crude oil and butadiene prices, whereas if the caprolactam method can achieve stable and low raw material costs along with high conversion rates, it may gain a competitive advantage in terms of pricing for nylon 66. It is worth keeping an eye on the actual production figures of various companies. Downstream demand is the key to absorbing excess production capacity: ultimately, production capacity is driven by demand. It is important to pay close attention to the growing demand for nylon 66 in areas such as engineering plastics, vehicle lightweighting, and electronics. In particular, new energy vehicles rely increasingly on lightweight materials; if this demand continues to rise, it will help in utilizing the additional production capacity that comes online. Investments or industrial chain layouts must be approached with caution: currently, the planned production capacity within the industry is quite substantial; however, the actual implementation rate and utilization rate are the true litmus tests for evaluating the effectiveness of these projects. It is recommended to compare the process routes, raw material supply, production costs, and order situations of several companies. Don’t rely solely on the capacity figures mentioned in news reports; also don’t forget to consult industry professionals or review more detailed corporate announcements. Overall, the technological breakthrough is commendable; however, the subsequent stability of mass production and the market’s ability to absorb it are the real tests.