According to enterprise investigation data, Huiyun Titanium Industry (300891) has obtained a new invention patent authorization, the patent name is "A Surface Modified Titanium Dioxide and Its Preparation Method." The patent application number is CN202311682720.6, and the authorization date is June 4, 2024.

Patent abstract: The invention relates to a surface modified titanium dioxide and a preparation method thereof, belonging to the technical field of surface treatment, comprising the following steps: brominating hydroxyl telechelic natural rubber, then esterifying the brominated telechelic natural rubber, and hydrolyzing after esterification to obtain oligomers; adding APTES to the titanium dioxide base material The suspension is stirred, centrifuged, and the collected particles are washed with toluene, and the solids are collected and dried to obtain the pretreated titanium dioxide base material; oligomers are used as surface treatment agent to surface treat the pretreated titanium dioxide base material to modify the surface. titanium dioxide. In the technical scheme of the invention, the prepared oligomer is combined with the aminated titanium dioxide through Schiff base reaction. The titanium dioxide with the oligomer on the surface is as hydrophobic as the rubber matrix, and the dispersibility is improved. In addition, the potential crosslinking effect between telechelic natural rubber and rubber chains on the surface of the titanium dioxide particles enables the titanium dioxide particles to better strengthen the rubber material.

Since the beginning of this year, Huiyun Titanium has obtained 2 new patent authorizations. Combined with the financial data of the company's 2023 annual report, the company invested 50.2799 million yuan in research and development in 2023, a year-on-year increase of 16.52%.