Polymerization of olefins

Details Polymerization of olefins Polymerization of olefins

1990-02-22

1993-01-05

Smith, Edward J.

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

Synthetic resins

Removing and recycling removed material from an ongoing...

525268, 526119, 526125, 526351, 526904, C08F 4651, C08F 4654, C08F 1000

Patent

active

051771624

ABSTRACT:
The present invention relates to an improvement of the known Ziegler catalyst which comprises a combination of a titanium-containing component and an organoaluminum component, and the present invention is characterized by a specific titanium-containing component. Namely, this titanium-containing component is obtained by contacting a known titanium-containing component of the Ziegler type catalyst which comprises Ti, Mg and a halogen, with an alkoxyalkylsilane compound which is characterized in that at least one of the alkyl groups has a branched structure. This catalyst does not require a so-called external electron donor, and no reduction of the polymerization velocity caused by the use of the electron donor is entailed. When this catalyst is used, a propylene/ethylene block copolymer in which the molecular weight of the propylene/ethylene copolymer portion and/or the polyethylene portion is increased, that is, the rigidity and impact strength are increased, can be prepared.

REFERENCES:
patent: 4387198 (1983-06-01), Sato et al.
patent: 4422956 (1983-12-01), Arzoumanidis et al.
patent: 4442224 (1984-04-01), Takitani et al.
patent: 4442276 (1984-04-01), Kashiwa et al.
patent: 4547552 (1985-10-01), Toyota et al.
patent: 4701505 (1987-10-01), Fujii et al.
Chemical Abstracts, vol. 94, No. 4, Jan. 1981, p. 20, Abstract No. 16366a, Columbus, OH, US & JP-A-80 108 406 (Chisso Corp) 20-08-1980.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2391223