271 results about "1-Hexene" patented technology

The invention provides a catalyst system for ethylene selective oligomerization and belongs to the field of catalytic technologies. The catalyst system comprises three components which are a ligand a,a transition metal compound b, and an activator c, wherein the transition metal compound b is a metal compound of groups IVB to VIII; the activator c is a compound containing group IIIA metal; the ligand a contains at least one phosphine amine group as shown in the following general formula I, the bridging group A is the bridging group of which the main chain contains alkyl, alkenyl or aryl and aheteroatom, wherein the heteroatom is one of silicon, tin, boron, phosphorus, nitrogen, oxygen or sulfur; R<1>, R<2> and R<3> are substituent groups on two phosphine groups respectively, and R<1>, R<2> and R<3> are the same or different. The catalyst system for the ethylene selective oligomerization, disclosed by the invention, has the beneficial effects that the catalyst system is high in activity, target products of 1-hexene and 1-1octene are high in selectivity, and the content of linear alpha-olefin of C6-C8 in the products is greater than 90% in percentage by mass and a catalyst is simple in synthesis, low in cost and long in service life.