Process for the gas phase (co-)polymerization of ethylene

Details Process for the gas phase (co-)polymerization of ethylene Process for the gas phase (co-)polymerization of ethylene

1990-12-26

1992-11-24

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526105, 526901, 526905, 526352, C08F 234

Patent

active

051662795

ABSTRACT:
The present invention relates to a process for (co-)polymerizing ethylene in a gaseous phase, by means of a fluidized and/or mechanically stirred bed reactor, with the help of a catalyst comprising a chromium oxide and a titanium compound, supported on a refractory oxide and activated by a heat treatment. The process is characterized in that the catalyst is introduced into the reactor in the form of a dry powder consisting of particles free from prepolymer and the (co-)polymerization is carried out in the presence of an organoaluminium compound. The (co-)polymer thus obtained has substantially low catalyst residues, and an improved stress cracking resistance.

REFERENCES:
patent: 4011382 (1977-03-01), Levine et al.
patent: 4321159 (1982-03-01), Bressler et al.
patent: 4517345 (1985-05-01), Eve et al.
patent: 4522987 (1985-06-01), Hogan et al.
patent: 4564660 (1986-01-01), Williams et al.

Affiliated with

Also associated with

Rating

Process for the gas phase (co-)polymerization of ethylene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the gas phase (co-)polymerization of ethylene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the gas phase (co-)polymerization of ethylene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-922531