Olefin block copolymer and production process thereof

Details Olefin block copolymer and production process thereof Olefin block copolymer and production process thereof

1997-05-28

1999-11-23

Wilson, Donald R.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525247, 525268, 525323, 526348, 526943, C08F29708, C08L 2316

Patent

active

059902353

ABSTRACT:
A chemically bonded olefin block copolymer consists essentially of chemically bonded polypropylene and poly(ethylene-co-propylene). The block copolymer is obtained by a process of (1) introducing a Ziegler polymerization catalyst based on titanium and propylene to a first polymerization zone (a) and polymerizing the propylene in the polymerization zone (a) for a period of 0.01 to 0.130 seconds and withdrawing an effluent stream of polypropylene, catalyst, solvent and unreacted propylene therefrom; (2) introducing the effluent stream to a second polymerization zone (b) together with ethylene dissolved in a solvent and carrying out a polymerization reaction in the second polymerization zone (b) for a period of 0.01 to 0.130 seconds; and (3) recovering the block copolymer.

REFERENCES:
patent: 3499060 (1970-03-01), Suzuki et al.
patent: 3798288 (1974-03-01), McManimie et al.
patent: 4977210 (1990-12-01), Kerth et al.
patent: 5391629 (1995-02-01), Turner et al.
patent: 5733980 (1998-03-01), Cozewithy et al.
patent: 5798420 (1998-08-01), Cozewith et al.
Y. Do et al. (1986) Macromol. 19, 2896-2900.
Amori et al. (1995). Macromol. Rapid Commun. 16, 247-252.
M. Bochmann, (1996) J Chem Soc, Dalton Trans. 255 (title page only).
J. Boor, Jr., Ziegler-Natta Catalysts and Polymerizations, Academic Press, New York, 1979, p. 32.

Affiliated with

Also associated with

Rating

Olefin block copolymer and production process thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1222965