Process for manufacturing ethylene terpolymers and ethylene copo

Details Process for manufacturing ethylene terpolymers and ethylene copo Process for manufacturing ethylene terpolymers and ethylene copo

1985-08-22

1986-10-14

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 234

Patent

active

046173668

ABSTRACT:
A process for the manufacture of radical ethylene terpolymers or copolymers comprising moieties derived from an alkyl (meth)acrylate and/or moieties derived from maleic anhydride by copolymerizing, in the presence of at least one free-radical initiator, a mixture of ethylene, (meth)acrylate and/or maleic anhydride in a device incorporating a primary compressor, the delivery pressure of which is between 200 and 300 bars, connected to a secondary compressor which is connected directly to a polymerization reactor, fresh ethylene being fed at the intake of the said primary compressor and said copolymerization being carried out in the said polymerization reactor under a pressure of between 1,000 and 2,500 bars and a temperature of between 140.degree. and 280.degree. C., wherein at least one the alkyl (meth)acrylate and/or maleic anhydride is fed directly into the said polymerization reactor.
The process of the invention has the advantage of not requiring a homogenization device before the entry of the monomers into the reactor.

REFERENCES:
patent: 3926925 (1975-12-01), Kuntz

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