Process for producing olefin polymers

Details Process for producing olefin polymers Process for producing olefin polymers

2005-03-30

2010-06-22

Lu, Caixia (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S131000, C526S165000, C526S943000, C502S103000, C502S152000

Reexamination Certificate

active

07741419

ABSTRACT:
A process for producing an olefin polymer is provided, in which ethylene and at least one kind or more of monomers selected from α-olefins are polymerized by a high temperature solution polymerization in a temperature range between 120 and 300° C., in the presence of an olefin polymerization catalyst composed of a bridged metallocene compound represented by general formula [I] described below and at least one kind or more compounds (B) selected from (b-1) an organoaluminum oxy-compound, (b-2) a compound capable of forming an ion pair in a reaction with the bridged metallocene compound mentioned above, and (b-3) an organoaluminum compound. According to the high temperature solution polymerization of the present invention, it has become possible to obtain a polymer having a high molecular weight with high polymerization activity that was so far unattainable, and when the polymer is a copolymer, it is a process for producing a high molecular weight olefin polymer with a large comonomer content, a narrow composition distribution, and a narrow molecular weight distribution.

REFERENCES:
patent: 5084534 (1992-01-01), Welborn, Jr. et al.
patent: 6207774 (2001-03-01), Hasegawa et al.
patent: 6469188 (2002-10-01), Miller et al.
patent: 2006/0161013 (2006-07-01), Tohi et al.
patent: 1-503788 (1989-12-01), None
patent: 5-320246 (1993-12-01), None
patent: 7-157508 (1995-06-01), None
patent: 2004-51676 (2004-02-01), None
Adv. Organoment. Chem., vol. 18, p. 99, 1980.
Angew. Chem. Int. Ed. Engl., vol. 24, p. 507, 1985.
J. Am. Chem. Soc., vol. 110, pp. 6255-6256, 1988.

Affiliated with

Also associated with

Rating

Process for producing olefin polymers 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 producing olefin polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing olefin polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4157948