Chenhua: Announcement on Obtaining Invention Patent Certificate

Yangzhou Chenhua New Materials Co., Ltd. (hereinafter referred to as "the company") has recently obtained an invention patent issued by the State Intellectual Property Office of the People's Republic of China. The details are as follows:

Invention name: A NaY-containing molecular sieve composition for continuous synthesis of polyurethane with tertiary amine catalysts and its preparation method

Inventors: Fang Lianshun; Dong Xiaohong; Ye Guanghua; Lin Qing; Guan Dan; Hao Sizhen; Wang Shilin; Bi Jihui

Patent No.: ZL 2022 1 0754273.X

Patent application date: June 30, 2022

Patentee: Yangzhou Chenhua New Material Co., Ltd.

Address: No. 231, Zhenzhong Road, Caodian Town, Baoying County, Yangzhou City, Jiangsu Province, 225800

Date of authorization announcement: March 24, 2023 Authorization announcement number: CN 115041221 B

Patent certificate number: No. 5811602

Patent Type: Invention Patent

Patent term: 20 years, starting from the date of patent application.

Key points of the patent: The invention prepares NaY molecular sieve catalyst modified by cerium nitrate and manganese nitrate, and applies it to the synthesis of tertiary amine catalysts for continuous preparation of polyurethane, which can effectively reduce the formation of bis-dimethylaminoethyl in the etherification reaction of dimethyl alcohol The temperature and time conditions of the ether reduce the generation of side reactions, increase the yield of the product, make the synthesis route more in line with the principle of energy utilization, and improve the safety of the synthesis route.

The above-mentioned invention patents have not been applied in the production of the company's products for the time being, and the acquisition of the patents will not have a major impact on the company's production and operation for the time being, but it will help the company to pre-plan intellectual property rights for possible future products, form a continuous innovation mechanism, and enhance the company's core Competitiveness.