Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-05-25
1998-01-13
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...
525 75, 525 78, 525 80, 525193, C08F25502, C08F25504
Patent
active
057080801
ABSTRACT:
A graft-modified ethylene/.alpha.-olefin copolymer composition is prepared by graft copolymerizing an ethylene/.alpha.-olefin copolymer. The ethylene/.alpha.-olefin copolymer composition includes first and second ethylene/.alpha.-olefin copolymers. The copolymers are each prepared in the presence of a polymerization catalyst containing (a) an organoaluminum oxy compound and (b) for the first ethylene/.alpha.-olefin copolymer at least two kinds, and for the second ethylene/.alpha.-olefin copolymer one kind, of compounds of Group IV transition metals of the periodic table containing a ligand having a cyclopentadienyl skeleton. The ethylene/.alpha.-olefin copolymer composition may be blended with a polyolefin by mechanical or solution blending. The copolymer compositions have excellent moldability and heat stability properties and forms films having high transparency and mechanical strength.
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Inagaki Hajime
Ohta Seiji
Takahashi Mamoru
Todo Akira
Tsutsui Toshiyuki
Mitsui Petrochemical Industries Ltd.
Wilson Donald R.
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