3results about How to "High insertion rate" patented technology

This invention relates to the field of polyethylene technology, specifically to a polar-modified high-purity polyethylene, its preparation method, and its applications. The method includes the following steps: In the presence of a nickel phosphonate catalyst, ethylene is polymerized with a polar monomer to obtain polar-modified polyethylene. The nickel phosphonate catalyst has the structure shown in Formula C. This invention, by employing a novel nickel phosphonate catalyst, improves the catalyst's tolerance to polar comonomers, increases the insertion rate of polar groups, and prepares polar-modified high / ultra-high molecular weight polyethylene, thereby improving the properties of polyethylene.

This invention relates to the field of polyolefin technology, specifically to a phosphonic sulfonic acid ligand for olefin polymerization, a nickel phosphonic sulfonate catalyst, its preparation method, and its application. The phosphonic sulfonic acid ligand structure is shown in Formula L, and the nickel phosphonic sulfonate catalyst is formed by a phosphonic sulfonic acid ligand and an organonitrile complex. The catalyst provided by this invention is a Drent-type catalyst composed of benzenesulfonic acid and 1,3,2-diazaphosphonic acid, which is resistant to polar comonomers and facilitates the preparation of high molecular weight polyolefins with biased polarity.