Polymerization process

Details Polymerization process Polymerization process

2004-12-27

2010-02-23

Teskin, Fred M (Department: 1796)

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

Synthetic resins

Removing and recycling removed material from an ongoing...

C526S064000, C526S065000, C526S905000, C422S132000

Reexamination Certificate

active

07666957

ABSTRACT:
A process for the polymerisation of ethylene and optionally at least one C3-20alpha olefin comonomer in the slurry or solution phase in a reactor having a polymer outlet stream, a procatalyst or catalyst feed stream and a hydrogen feed stream, said polymerisation being effected in the presence of a metallocene catalyst, a diluent and hydrogen, wherein said diluent is recycled from said outlet stream to said hydrogen feed stream, said procatalyst or catalyst feed stream is free of hydrogen, said hydrogen feed stream is free of procatalyst or catalyst and said procatalyst or catalyst feed stream does not comprise recycled diluent.

REFERENCES:
patent: 3193360 (1965-07-01), Scoggin
patent: 2002/0065376 (2002-05-01), Bell et al.
patent: 2004/0044153 (2004-03-01), Ehrman et al.
patent: 2005/0234203 (2005-10-01), McGrath
patent: 2006/0160962 (2006-07-01), Tonti et al.
patent: 0 887 379 (1998-12-01), None
patent: 0 690 878 (1999-12-01), None
patent: 0 781 300 (2001-07-01), None
patent: WO 97/43323 (1997-11-01), None
patent: WO99/16797 (1999-04-01), None
patent: WO 00/34341 (2000-06-01), None
patent: WO 00/53306 (2000-11-01), None
Kaminsky et al, Hydrogen transfer reactions of supported metallocene catalysts, J. of Molecular Catalysis A: Chemical 128 (1998) 191-200.

Affiliated with

Also associated with

Rating

Polymerization process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymerization process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymerization process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4200499