Low gel chromium catalysis

Details Low gel chromium catalysis Low gel chromium catalysis

2005-02-08

2010-06-29

Teskin, Fred M (Department: 1796)

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

Synthetic resins

Polymerizing in tubular or loop reactor

C526S065000, C526S105000, C526S106000

Reexamination Certificate

active

07745551

ABSTRACT:
The present invention discloses the use of a chromium-based catalyst system in two serially connected loop reactors for copolymerising ethylene and a comonomer, at reduced productivity, the final polyethylene having a reduced amount of gel.

REFERENCES:
patent: 2917465 (1959-12-01), Begley
patent: 6063878 (2000-05-01), Vandaele
patent: 2003/0114608 (2003-06-01), Tharappel
patent: 1041096 (2000-10-01), None

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