Polymerization in several stages of alpha-olefins in the gas pha

Details Polymerization in several stages of alpha-olefins in the gas pha Polymerization in several stages of alpha-olefins in the gas pha

1986-02-12

1987-10-27

Smith, Edward J.

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

Synthetic resins

Polymerizing in two or more physically distinct zones

422131, 526 66, 526901, 525 53, C08F 234, C08F 1000

Patent

active

047030941

ABSTRACT:
A process and apparatus as shown in FIG. 1 for the production of polyolefins by the polymerization of alpha-olefins in the gas phase, in several stages, in at least two polymerization reactors interconnected by a transfer device making it possible to transfer the polyolefins resulting from the first reactor into the second reactor, in which the polymerization is continued under conditions identical to or different from those of the first reactor.

REFERENCES:
patent: 3894998 (1975-07-01), Spiegelman
patent: 4338424 (1982-07-01), Morita et al.
patent: 4390669 (1983-06-01), Morita et al.
patent: 4420592 (1983-12-01), Kato et al.

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