Translation of a summary from Chinese to English

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My former colleague has asked me to translate a summary from English to Chinese; it’s needed by tomorrow. I’m quite busy today and don’t have time. But this colleague has already helped me a lot; I’m embarrassed to refuse. I would also be very grateful if the experts from Haichuan could step in to help. Here is the summary; professional terms do not need to be translated. Whether it’s translating a single sentence or a paragraph, I’d like to thank those who are willing to help in advance. 4-Aminodiphenylamine (RT DOP) is an important intermediate in the fine chemical industry, primarily used in the production of polyphenylene diamine-based rubber antioxidants, such as rubber antioxidant 4010NA and 4020. According to statistics, the global consumption of rubber antioxidants 4010NA and 4020 accounts for around 60% of the total consumption of rubber antioxidants, making them the most important types of such antioxidants. Therefore, the advancement of the synthesis process for p-aminodiphenylamine as a key intermediate, as well as its product quality and production costs, have become focal points of research for rubber additive manufacturers both domestically and internationally. In recent years, research on the synthesis process of amino-diphenylamine has progressed rapidly, with trends moving toward greener and cleaner methods, higher quality, and lower costs. Among them, the cleaning process using *** as a raw material has become one of the most promising approaches for future development. Focusing on the progress in the production technology of p-aminodiphenylamine both domestically and internationally, this paper explores clean and green processes for its production, aiming to improve product quality and reduce production costs. This holds great practical significance for enhancing the market competitiveness and sustainable development capabilities of the rubber antioxidant products produced by Sinopec Nanhua Company. The paper first introduces the research background and significance of the topic, and provides a comprehensive review of existing domestic and international literature on p-aminodiphenylamine. On this basis, it conducts research and exploration on the cleaning process using the *** method, focusing on the effects of catalysts, reaction conditions, solvents, etc. on the synthesis of p-aminodiphenylamine; experimental studies are carried out to determine the optimal reaction conditions as well as the appropriate selection of reaction aids. At the same time, certain research was conducted on the selection of key equipment during the pilot-scale testing process, laying a solid foundation for future industrial production. Experimental results have shown that the route involving the condensation of *** with aniline, followed by catalytic hydrogenation to produce p-aminodiphenylamine – a key intermediate for rubber anti-aging agents – offers advantages such as environmental friendliness, superior quality, and reduced costs. It has achieved the desired objectives, providing a reliable technical basis for Sinopec Nanhua Company to use this *** method in the production of anti-aging agents in the future.