Process for Preparing block copolymer of monoolefin

Details Process for Preparing block copolymer of monoolefin Process for Preparing block copolymer of monoolefin

1994-07-05

1996-10-08

Nagumo, Mark

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

Synthetic resins

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

525299, 5253337, 525386, 526176, 526170, 526943, C08F 452, C08F29708

Patent

active

055632190

ABSTRACT:
A process for preparing a block copolymer of an .alpha.-olefin and a vinyl compound is here disclosed which comprises the steps of polymerizing an olefin selected from ethylene and the .alpha.-olefin having 3 or more carbon atoms by the use of a divalent or a trivalent rare earth metal complex, and then polymerizing a vinyl compound, a vinylidene compound or a lactone. According to the process of the present invention, a polar group can be introduced into a polyolefin, whereby the characteristics of the polymer can be effectively improved.

REFERENCES:
patent: 4668773 (1987-05-01), Marks et al.
patent: 5132369 (1992-07-01), Yasuda et al.
patent: 5218064 (1993-06-01), Yasuda et al.
Grants Hackh's Chemical Dictionary, 5th Ed., McGraw Hill, New York, 496-497.
Kirk-Otwer Concise Encyclopedia of Chemical Technology, Wileyy (1985).

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