Ethylene-.alpha.-olefin-nonconjugated polyene random copolymer,

Details Ethylene-.alpha.-olefin-nonconjugated polyene random copolymer, Ethylene-.alpha.-olefin-nonconjugated polyene random copolymer,

1995-12-19

1997-03-11

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526126, 526127, 526133, 526134, 526153, 526160, 526170, 526281, 526336, 526943, 524554, 524570, 524576, 524579, C08F23620, C08F23206, C08F 464

Patent

active

056102542

ABSTRACT:
Disclosed is an ethylene-.alpha.-olefin-nonconjugated polyene random copolymer which is a random copolymer of (a) ethylene, (b) an .alpha.-olefin of 3 or more carbon atoms and (c) a nonconjugated polyene, and has such properties that (i) the copolymer contains (a) units derived from ethylene and (b) units derived from the .alpha.-olefin of 3 or more carbon atoms in a molar ratio of 40/60 to 95/5 ((a)/(b)), (ii) the iodine value is in the range of 1 to 50, (iii) the intrinsic viscosity (.eta.), as measured in decahydronaphthalene at 135.degree. C., is in the range of 0.1 to 8.0 dl/g, and (iv) the ratio g.eta.* of the intrinsic viscosity (.eta.) of the copolymer defined above to the intrinsic viscosity (.eta.).sub.blank of a linear ethylene-propylene copolymer having the same weight-average molecular weight as the ethylene-.alpha.-olefin-nonconjugated polyene random copolymer and having an ethylene content of 70% by mol, (.eta.)/(.eta.).sub.blank, is in the range of 0.2 to 0.9 or the ratio g' of the intrinsic viscosity (.eta.) of said random copolymer defined above to the intrinsic viscosity (.eta.).sub.blank' of a linear ethylene-propylene copolymer having an ethylene content of 70% by mol which is determined by measurement of gel permeation chromatography (GPC) of ethylene-.alpha.-olefin-nonconjugated polyene random copolymer in orthodichlorobenzene at 140.degree. C., (.eta.)/(.eta.).sub.blank', is in the reange of 0.2 to 0.9.

REFERENCES:
patent: 5229478 (1993-07-01), Floyd et al.
Journal of Organometallic Chemistry, vol. 288, (1985) pp. 63-67 Synthesis and Crystal Structure of a Chiral ansa-Zirconocene Derivative with Ethylene-Bridged Tetrahydroindenyl Ligands.

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