Process for a gas phase olefin polymerization

Details Process for a gas phase olefin polymerization Process for a gas phase olefin polymerization

1996-11-26

1999-07-13

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 90, 526901, 502523, C08F 234

Patent

active

059228180

ABSTRACT:
The present invention relates to a process for introducing a solid catalyst into a gas-phase olefin polymerization reactor. It comprises in particular storing the catalyst in the form of a dry powder in a hopper, withdrawing from the hopper a measured amount of the said catalyst, introducing the said amount of the catalyst and a liquid hydrocarbon into a mixing chamber, mixing the said catalyst with the said liquid hydrocarbon so as to form in the said chamber a suspension of the entrained catalyst with the said liquid hydrocarbon, and introducing the said suspension into the said reactor. In a preferred form, the liquid hydrocarbon is continuously introduced into the chamber and forms a continuous stream to which is added the measured amount of the catalyst and which flows into the reactor.

REFERENCES:
patent: 4200715 (1980-04-01), Lynch et al.
patent: 4610574 (1986-09-01), Peters
patent: 5098667 (1992-03-01), Young et al.

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