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1·The invention relates to a method for preparing single salicylaldehyde imine vanadium olefin polymerization catalyst and application of the catalyst in catalyzing ethylene polymerization.

本发明涉及单水杨醛亚胺钒烯烃聚合催化剂及制备方法和该催化剂在催化乙烯聚合中的应用。