Wedoany.com Report on Mar 4th, Recently, Wanhua Chemical Group Co., Ltd. of China has successfully obtained patent authorization for "A Preparation Method of Epichlorohydrin," with the patent number CN202310355612.1. The implementation of this patented technology further enriches the company's technical reserves in the field of fine chemicals and demonstrates its sustained leading independent innovation capability.
It is reported that this patent adopts a two-stage fixed-bed series process, achieving a technological breakthrough through precise process design. Specifically, the first reactor effectively improves the conversion rate of hydrogen peroxide by extending the residence time, laying the foundation for reaction efficiency. The second reactor adjusts the system's acidity using alkaline substances and optimizes the feeding speed, thereby effectively inhibiting the generation of by-products. This ultimately achieves a dual balance of high conversion rate and long catalyst lifespan, providing a brand-new technological pathway for the efficient and green production of epichlorohydrin. As an important chemical intermediate, epichlorohydrin is widely used in fields such as epoxy resins, synthetic glycerin, and water treatment resins. The breakthrough in this patented technology will further enhance Wanhua Chemical's product competitiveness and market influence in related sectors.
Behind these innovative achievements lies Wanhua Chemical's persistent commitment to R&D investment. Data shows that in the first half of 2025, the company's R&D expenses reached 2.291 billion yuan, a year-on-year increase of 10.1%. This high-intensity R&D investment provides a solid guarantee for technological innovation. Although the company added 96 new patent authorizations in the first three months of 2026, a slight decrease of 5.88% year-on-year, this has not affected the overall progress of its innovation strategy. Instead, it reflects the company's pursuit of excellence in patent quality.
As of now, Wanhua Chemical has accumulated a total of 6,616 patents, establishing a comprehensive technological innovation system that covers multiple core areas including chemical materials, production processes, and environmental protection technologies. Simultaneously, the company has established 80 subsidiaries and extensively participated in 5,333 bidding activities, forming a full industrial chain layout encompassing R&D, production, sales, and services. This demonstrates its strong industrial chain integration capabilities and market influence. As a leading enterprise in the global new chemical materials sector, Wanhua Chemical consistently drives progress with independent innovation as its core, continuously breaking through key core technologies and overcoming industry technical barriers.
The authorization of this new patent is not only another significant manifestation of Wanhua Chemical's technological innovation achievements but will also further promote the upgrading and optimization of epichlorohydrin production processes, contributing to the industry's green and low-carbon development. In the future, Wanhua Chemical will continue to increase R&D investment, deepen its focus on core technology areas, improve its industrial chain layout, empower high-quality industry development with more innovative results, and consolidate its leading position in the global chemical sector.
