Halogen-containing compound and use thereof as catalyst ligand in ethylene oligomerization

US11826743B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Hongfei Wu · Beijing, CN
• Mingfang Zheng · Beijing, CN
• Songshuang Hu · Beijing, CN
• Tonglin Li · Beijing, CN
• Jun Liu · Dressendorf, DE
• Ke Xu · 流花街道, CN
• Xiaoqing Wang · Suzhou, CN
• Feng Pan · Kunshan, CN

Key dates

• Filing date: Oct 30, 2019
• Grant date: Nov 28, 2023
• Expiry date: Jan 13, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A halogen-containing compound represented by a formula I and a use thereof as a ligand of an ethylene oligomerization catalyst composition, an ethylene oligomerization catalyst composition comprising the halogen-containing compound, and an ethylene oligomerization method, ethylene trimerization method and ethylene tetramerization method using the catalyst composition are provided. Serving as the ligand of the ethylene oligomerization catalyst, the halogen-containing polymer may effectively improve the catalytic performance of a catalyst system, especially by displaying a significantly improved catalytic performance in an ethylene oligomerization reaction. The maximum catalyst activity may exceed 4×108 g·mol(Cr)−1·h−1, and the total selectivity of 1-hexene and 1-octene exceeds 92 wt %. In a C6 product, the content of 1-hexene may reach about 97%, and in a C8 product, the content of 1-octene may reach more than 98%.