Olefin coordination polymerization catalyst and application thereof

The invention provides an olefin coordination polymerization catalyst and application thereof. The olefin coordination polymerization catalyst comprises a main catalyst and a cocatalyst, wherein the molar ratio of a transition metal halide in the main catalyst to the cocatalyst is 1:(10-500); the main catalyst comprises a magnesium compound, the transition metal halide, alcohol with the carbon atom number of 2-15 and a star-shaped organosiloxane compound in the molar ratio of 1:(1-40):(0.01-10):(0.001-10); the cocatalyst comprises an organoaluminum compound. The olefin coordination polymerization catalyst is used as a catalyst for ethylene polymerization, propylene polymerization and ethylene or propylene and alpha-olefin copolymerization. The olefin polymerization catalyst has good catalytic activity. 本发明提供了种烯烃配位聚合催化剂及其应用。该烯烃配位聚合催化剂的原料组成包括：主催化剂和助催化剂，其中，主催化剂中的过渡金属卤化物与助催化剂的摩尔比为1：10-500；主催化剂的原料组成包括摩尔比为：1：1-40：0.01-10：0.001-10的镁化物、过渡金属卤化物、碳原子数为2-15的醇和星状有机硅氧烷化合物；助催化剂包括有机铝化合物。上述烯烃配位聚合催化剂作为乙烯聚合、丙烯聚合、乙烯或丙烯与α-烯烃共聚合的催