Sou Hu Cai Jing·2026-01-19 02:44Group 1 - China Petroleum & Chemical Corporation (Sinopec) has applied for a patent for "Crystal Form I of 2-Nitroterephthalic Acid Dimethyl Ester and Its Preparation Method and Application" with publication number CN121342666A, filed on July 2024 [1] - The patent describes a crystalline product of 2-Nitroterephthalic Acid Dimethyl Ester, characterized by specific peaks in X-ray powder diffraction at angles of 10.2±0.2°, 14.3±0.2°, 14.9±0.2°, 15.8±0.2°, 16.3±0.2°, 17.3±0.2°, 19.3±0.2°, 20.1±0.2°, 20.5±0.2°, 22.1±0.2°, 22.5±0.2°, 23.4±0.2°, 24.4±0.2°, 25.0±0.2°, 25.5±0.2°, 26.4±0.2°, 26.7±0.2°, 27.2±0.2°, 27.5±0.2°, and 28.4±0.2° [1] - The crystalline product is described as block-shaped, with complete crystal habits, smooth surfaces, high crystallinity, and good stability [1] Group 2 - China Petroleum & Chemical Corporation was established in 2000, located in Beijing, primarily engaged in oil and gas extraction, with a registered capital of approximately 12.17 billion RMB [2] - Sinopec has invested in 269 companies, participated in 5000 bidding projects, holds 45 trademark registrations, and has 5000 patent records, along with 41 administrative licenses [2] - Sinopec Research Institute of Petroleum and Chemical Industry, established in 2022, is also based in Beijing, focusing on research and experimental development, with a registered capital of 300 million RMB [2] - The research institute has invested in 2 companies, participated in 3932 bidding projects, holds 1653 patent records, and has 293 administrative licenses [2]