Production of polyethylene for blow molding

Details Production of polyethylene for blow molding Production of polyethylene for blow molding

1998-02-09

2000-11-21

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526105, 526132, 526134, 502117, C08F 424

Patent

active

061504807

ABSTRACT:
A process for producing high density polyethylene suitable for blow molding and having high environmental stress cracking resistance and rigidity, comprising copolymerizing ethylene and a C.sub.3 -C.sub.10 alpha-olefinic comonomer in the presence of a chromium-based catalyst having an alumina-containing support, and an organoboron compound, wherein the atomic ratio of boron in the organoboron compound to the chromium in the chromium-based catalyst is from around 0.2 to around 0.4.

REFERENCES:
patent: 4049896 (1977-09-01), Rekers et al.
patent: 4118340 (1978-10-01), Rekers et al.
patent: 4356294 (1982-10-01), Rekers et al.
patent: 4593079 (1986-06-01), Rekers et al.

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