Process for producing polyethylene and an ethylene-.alpha.-olefi

Details Process for producing polyethylene and an ethylene-.alpha.-olefi Process for producing polyethylene and an ethylene-.alpha.-olefi

1983-11-16

1985-06-25

Smith, Edward J.

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

Synthetic resins

Removing and recycling removed material from an ongoing...

526 84, 528485, 528486, 528491, C08F 602, C08F 1002

Patent

active

045255466

ABSTRACT:
Polyethylene and an ethylene-.alpha.-olefin copolymer are produced by polymerizing ethylene or a mixture of ethylene with an .alpha.-olefin having 3 to 18 carbon atoms by use of a coordination polymerization catalyst containing a transition metal compound and an organometallic compound, deactivating said catalyst by adding a copolymer of at least one monomer selected from the group consisting of vinyl monomers having a carbonyl group represented by the formula: ##STR1## wherein R.sup.1 represents a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms; R.sup.2 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms; M represents a metal element; and m represents the valence of M,
or maleic anhydride with ethylene to be mixed with said catalyst, separating unaltered monomers from the polymer mixture.

REFERENCES:
patent: 3627740 (1971-12-01), Schafer et al.
patent: 4105609 (1978-08-01), Machon et al.
patent: 4330646 (1982-05-01), Sakurai et al.
patent: 4381252 (1983-04-01), Sakurai et al.
patent: 4425464 (1984-01-01), Allen et al.
patent: 4430488 (1984-02-01), Zboril

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