Process for producing polyethylene having constant physical and

Details Process for producing polyethylene having constant physical and Process for producing polyethylene having constant physical and

1982-07-26

1985-01-29

Wong, Jr., Harry

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

Synthetic resins

Polymerizing in tubular or loop reactor

526 73, 526 74, 526352, C08F 1002

Patent

active

044966989

ABSTRACT:
A process for producing polymers or copolymers of ethylene, in which ethylene, optionally together with one or more copolymerizable compounds, is polymerized at a pressure above 50,000 kPa and a temperature of between 100.degree. and 400.degree. C. in the presence of an initiator, using an autoclave reactor and a tubular reactor connected in series with said autoclave reactor. The monomeric mixture in the presence of the initiator is passed first into a stirred autoclave, in which it is partially polymerized. Thereafter the reaction mixture from said autoclave, is passed through a heat exchanger, cooled to a pre-determined value, and then subsequently passed to a non-cooled tubular reactor, in which the further polymerization is carried out under adiabatic conditions.

REFERENCES:
patent: 4282339 (1981-08-01), Donaldson et al.

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