Method of polymerization and copolymerization of ethylene

Details Method of polymerization and copolymerization of ethylene Method of polymerization and copolymerization of ethylene

2007-03-20

2007-03-20

Lu, Caixia (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S125100, C526S125200, C502S116000, C502S123000, C502S127000, C502S128000, C502S132000

Reexamination Certificate

active

10541597

ABSTRACT:
Disclosed is a method of polymerization and copolymerization of ethylene, which is carried out in the presence of (a) a solid titanium complex catalyst prepared by the steps of (i) preparing a magnesium solution by contacting halogenated magnesium compounds with alcohol, (ii) reacting the magnesium solution with ester compound having at least one hydroxyl group and silicon compound having alkoxy group, (iii) preparing a solid titanium catalyst component by reacting mixture of titanium compound and haloalkane compound; and (iv) producing solid titanium complex catalyst by reacting the solid titanium catalyst component with mixture of aluminum compound and haloalkane compound, or with haloalkane; and (b) organometallic compounds in Group II or III of the Periodic Table.

REFERENCES:
patent: 4657998 (1987-04-01), Malpass
patent: 5990251 (1999-11-01), Gelus
patent: 6762145 (2004-07-01), Yang et al.
patent: 2004/0030077 (2004-02-01), Yang et al.

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