Sou Hu Cai Jing·2026-01-12 11:16Group 1 - China Petroleum & Chemical Corporation (Sinopec) has applied for a patent titled "A Method for Capturing PX Gas Phase Oxidation Products," with publication number CN121288508A, filed on July 2024 [1] - The patent describes a method for capturing products from PX gas phase oxidation, specifically para-methylbenzaldehyde and phthalaldehyde, without introducing additional absorbents, achieving capture rates greater than 95% for phthalaldehyde and over 97% for para-methylbenzaldehyde [1] - Sinopec, established in 2000 and based in Beijing, primarily engages in oil and gas extraction, with a registered capital of approximately 12.17 billion RMB, and has invested in 269 companies and participated in 5000 bidding projects [1] Group 2 - Sinopec Yangzi Petrochemical Company, founded in 2006 and located in Nanjing, focuses on oil, coal, and other fuel processing, with a registered capital of approximately 1.57 billion RMB, and has invested in 13 companies and participated in 5000 bidding projects [2] - The company holds 20 trademark registrations and 1028 patent records, along with 13,078 administrative licenses [2]