Controlled ethylene polymerization process

Details Controlled ethylene polymerization process Controlled ethylene polymerization process

1978-08-03

1980-07-01

Smith, Edward J.

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

Synthetic resins

Polymerizing in two or more physically distinct zones

252429C, 526119, 526125, 526352, 526919, C08F 402, C08F 466, C08F 1002

Patent

active

042107342

ABSTRACT:
A high-temperature, high-pressure process for polymerizing ethylene in a reactor system having at least two reaction zones with a catalytic system including an activator (a), a compound (b), and a compound (c). Compounds (b) and (c) are injected into different reaction zones. Activator (a) is selected from hydrides and organometallic compounds of a metal of groups I to III of the Periodic Table. Compound (b) is represented by the formula

REFERENCES:
patent: 3238146 (1966-03-01), Hewett et al.
patent: 3509117 (1970-04-01), Rust et al.
patent: 3969332 (1976-07-01), Gloriod et al.
patent: 4014859 (1977-03-01), Cooper et al.

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