[Haichuan Chemical Salary Updates] Zhenhai Refining & Chemical uses domestic additives in transparent PP

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Reporters recently learned from Sinopec Zhenhai Refining & Chemical Company that this year the company replaced imported additives with domestically developed ones, and has successfully produced 240 tons of high-quality new transparent polypropylene product M26ETW. This represents an important breakthrough in the efforts to develop domestic technology for producing key additives in this field. With the use of this domestically produced additive, based on the production volume in 2018, it can help companies save around 6 million yuan in costs and increase efficiency each year. It is understood that transparent polypropylene products are widely used. In 2014, Zhenhai Refining & Chemical Corporation succeeded in developing its first high-end transparent polypropylene product, M26ETU. Its melt index reached 26 grams per 10 minutes, exceeding the upper limit for melt indices of randomly copolymerized grades produced using domestic loop process technology at that time. Thanks to its good hardness, stiffness, and transparency, this product was very popular as soon as it was launched on the market. It became Zhenhai Refining & Chemical Corporation’s most profitable polypropylene grade, and it gradually managed to penetrate overseas markets as well. However, since the core agents used in the production of such polypropylene products were previously imported from abroad, the costs were high. To break technological monopolies and further enhance efficiency, Zhenhai Refining & Chemical Corporation formed a task force at the beginning of this year to focus on the technical development of domestically produced key additives, starting with the formulation system for transparent polypropylene. The research team selected 6 types from a variety of domestic transparent nucleators, combined them with other additives in different proportions, and conducted repeated tests on resin performance parameters such as high-temperature resistance, transparency, haze, and flexural modulus. Ultimately, they developed a domestic additive formula specific for transparent polypropylene that offers stable performance results while also being cost-effective, and this formula was tested on an industrial production scale.