Process for preparing block copolymer of monoolefin

Details Process for preparing block copolymer of monoolefin Process for preparing block copolymer of monoolefin

1996-07-18

1997-12-16

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...

5253337, 525415, 526170, 526172, 526943, C08F 452, C08F29706

Patent

active

056986343

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.
H. Yasuda et al. (1992) Macromol. 25, 5115-6.
N.I. Sax et al., eds., Hawley's Condensed Chemical Dictionary, 11th Ed., Van Nostrand Reinhold, New York, 1987, p. 1224.
Grant & Mackh's Chemical Dictionary, 5th Ed., McGraw Hill, New York, 496-71.
Kirk-Othner Concise Encyclopedia of Chemical Technology, Wiley (1985).

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