Process for production of homogeneous polyethylenes

Details Process for production of homogeneous polyethylenes Process for production of homogeneous polyethylenes

1994-03-31

1995-04-25

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526129, 526144, 526151, 526336, 526901, 526904, C08F 468, C08F 234

Patent

active

054100038

ABSTRACT:
A process for the production of a homogeneous polyethylene comprising contacting ethylene, one or more alpha-olefins, and one or more unconjugated dienes, under polymerization conditions, with a catalyst system comprising:
(A ) a modified supported vanadium based catalyst precursor;
(B) an alkylaluminmn halide cocatalyst; and
(C) a promoter consisting of an unsaturated aliphatic halocarbon or a haloalkyl substituted aromatic hydrocarbon
with the proviso that sufficient unconjugated diene is present to provide in the homogeneous polyethylene about 0.01 to less than about one percent by weight diene.

REFERENCES:
patent: 4508842 (1985-04-01), Beran et al.
patent: 4882406 (1989-11-01), Cozewith et al.
patent: 4892853 (1990-01-01), Cann et al.
patent: 5082908 (1992-01-01), Imai et al.
patent: 5332793 (1994-07-01), Cann

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