High activity polyethylene catalysts prepared with borates...

Details High activity polyethylene catalysts prepared with borates... High activity polyethylene catalysts prepared with borates...

2006-08-01

2006-08-01

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...

C502S104000, C502S115000, C502S120000, C502S132000, C502S202000, C526S124800

Reexamination Certificate

active

07084217

ABSTRACT:
An improved supported Ziegler-Natta catalyst especially useful for olefin polymerisation, the catalyst including a carrier, an organomagnesium compound, a borate compound, and one transition metal compound.

REFERENCES:
patent: 4339351 (1982-07-01), Mashita et al.
patent: 4378304 (1983-03-01), Dombro
patent: 4530912 (1985-07-01), Pullukat et al.
patent: 5541271 (1996-07-01), Sano et al.
patent: 0 376 188 (1990-07-01), None
patent: 0 497 102 (1992-08-01), None
patent: WO93/09147 (1993-05-01), None

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