Process for preparing polypropylene compositions having high imp

Details Process for preparing polypropylene compositions having high imp Process for preparing polypropylene compositions having high imp

1976-12-29

1978-09-12

Holler, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08F29708

Patent

active

041138023

ABSTRACT:
There is disclosed a new and improved process for preparing compositions consisting for at least 50% by weight of isotactic polypropylene and having high impact strength at low temperatures.
The process comprises three or more steps. In the first step propylene is polymerized in an inert liquid hydrocarbon medium and in contact with a stereospecific catalyst prepared by mixing a titanium trihalide with a dialkyl aluminum monohalide to obtain a slurry. In subsequent steps ethylene, or an ethylene/propylene mixture, is fed to the polymerization suspension of first step and the polymerization is continued until the amount of ethylene polymerized is, at most, 20% by weight of the total, final polymeric composition obtained.

REFERENCES:
patent: 3629368 (1971-12-01), Fukuda et al.
patent: 3798288 (1974-03-01), McManimie et al.
patent: 3970719 (1976-07-01), Edmonds, Jr.
patent: 3974236 (1976-08-01), Koga et al.
patent: 3998911 (1976-12-01), Strametz et al.

Affiliated with

Also associated with

Rating

Process for preparing polypropylene compositions having high imp 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 preparing polypropylene compositions having high imp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing polypropylene compositions having high imp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2384358