万华化学公布国际专利申请：“用于生产异氰酸酯的自清洁热反应器、方法及异氰酸酯”

Core Viewpoint - Wanhua Chemical (600309) has filed an international patent application for a self-cleaning thermal reactor for producing isocyanates, indicating a significant focus on innovation and R&D [1] Group 1: Patent Information - The patent is titled "Self-Cleaning Thermal Reactor for Producing Isocyanates, Method and Isocyanate" with application number PCT/CN2024/106714, published internationally on January 29, 2026 [1] - This marks the fourth international patent application by Wanhua Chemical this year, representing a 300% increase compared to the same period last year [1] Group 2: R&D Investment - In the first half of 2025, Wanhua Chemical invested 2.291 billion yuan in R&D, reflecting a year-on-year increase of 10.1% [1]