A novel MgCl_2-supported Ziegler-Natta catalyst using poly(propylene glycol)dibenzoate (PPGDB) as the internal electron donor for propylene polymerization was prepared.

Propylene polymerization was studied with TiCl4/MgCl2/1,3-diol dibenzoate(LLX)/diisobutyl phthalate(DBP) as catalyst,in which LLX/DBP was used as internal electron donor compounds.

This paper summarized research and development status of Ziegler-Natta catalyst for polymerization of ethylene and propylene,and focusing on the progress of propylene polymerization catalyst with a new diether compounds as internal electron donor.

The functions of electron donors in the Ziegler-Natta catalyst system for polypropylene;

Overviews development situation of Basell Z-N catalyst for polypropylene production,emphasizing on the latest development of internal and external electron donors.

Evaluation of New Highly Activity Donor in Industrial Application;

The Application of Domestically-made Electron Donor in PP Plant of Daqing;

1 MPa for 2 hours, which tested the crystallized properties of polypropylene by separately using the combination of catalyst X1,catalyst X2,import catalyst TK260,domestic catalyst YH842 with three other kinds of outer-donors.

In this dissertation, four new electron donors containing diamino group, pyridine group, pyrene group, have been designed and prepared.

Tetrathiafulvalene (TTF) is a strong electron donor with good reversible electrochemical redox properties.

DNBP as internal donor influences electronic state of Ti species in TiCl4/MgCl2 catalysts by providing electrons to the species, which makes the binding energy of Ti 2p3/2 peak shifting to lower energy regions.

Activity,hydrogen response,stereospecificity and kinetic behavior of catalysts with 1,3-diol dibenzoate as internal donor for propylene polymerization were studied.

It was found that a small amount of di-n-butyl-phthalate(DNBP)was produced in-situ by chemical reactions in the system and acted as internal donor in polymerization.