Ethylene polymers having enhanced processability

Details Ethylene polymers having enhanced processability Ethylene polymers having enhanced processability

1996-10-10

1998-08-25

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526127, 526129, 526160, 526348, 5263482, 5263484, 5263485, 5263486, 526901, G08F 1002, G08F 1004, G08F 1014

Patent

active

057984271

ABSTRACT:
An ethylene polymer having a Polydispersity Index of at least about 3.0, a melt index, MI, and a Relaxation Spectrum Index, RSI, such that (RSI)(MI.sup..alpha.) is greater than about 26 when .alpha. is about 0.7, and a Crystallizable Chain Length Distribution Index, L.sub.w /L.sub.n, less than about 3 is provided. Such ethylene polymer has processability equivalent or superior to even conventional high pressure polyethylene at similar melt index, yet need not be made under high pressure reaction conditions.

REFERENCES:
patent: 4794096 (1988-12-01), Ewen
patent: 5086134 (1992-02-01), Antberg et al.
patent: 5216095 (1993-06-01), Dolle et al.
patent: 5272236 (1993-12-01), Lai et al.
patent: 5278264 (1994-01-01), Spaleck et al.
patent: 5278272 (1994-01-01), Lai et al.
patent: 5304614 (1994-04-01), Winter et al.
patent: 5314973 (1994-05-01), Welborn, Jr.
patent: 5350817 (1994-09-01), Winter et al.
patent: 5374700 (1994-12-01), Tsutsui et al.
patent: 5380810 (1995-01-01), Lai et al.
patent: 5395471 (1995-03-01), Obijeski et al.
patent: 5420220 (1995-05-01), Cheruvu et al.
patent: 5459217 (1995-10-01), Todo et al.
patent: 5565533 (1996-10-01), Galimberti et al.
Coates, Geoffrey W. & Robert M. Waymouth, "Oscillating Stereocontrol: A Strategy for the Synthesis of Thermoplastic Elastomeric Polypropylene", Science, vol. 267, Jan. 13, 1995, pp. 217-219.
Diamond, Gary M., Stephan Rodewald & Richard F. Jordan, "Efficient Synthesis of rac-(Ethylenebis(indenyl)ZrX.sub.2 Complexes via Amine Elimination", Organometallics, vol. 14, 1995, pp. 5-7.
Japanese Abstract WO 9419391 A assigned to Idemitsu Kosan Co., Ltd.
Spaleck, Walter, FRank Kuber, Andreas Winter, Jurgen Rohrmann, Bernd Bachmann, Martin Antberg, Volker Dolle & Erich F. Paulus, "The Influence of Aromatic Subsitituents on the Polymerization Behavior of Bridged Zirconocene Catalysts", Organometallics, vol. 13, 1994, pp. 954-963.
Giardello, Michael A., Moris S. Eisen, Charlotte L. Stern & Tobin J. Marks," Chiral, Non-C.sub.2 Symmetric Zirconocene Complexes as Catalysts for Stereoregular .alpha.-Olefin Polymerization", J. Am. Chem. Soc., vol. 115, 1993, pp. 3326-3327.
Ewen, John A., "Mechanisms of Stereochemical Control in Propylene Polymerization with Soluble Group 4B Metallocene/Methylalumoxane Catalysts", J. Am. Chem. Soc., vol. 106, 1984, pp. 6355-6364.
Kaminsky, Walter, Klaus Kulper, Hans H. Brintzinger & Ferdinand R.W.P. Wild, "Polymerization of Propene and Butene with a Chiral Zirconocene and Methylalumoxane as Cocatalyst", Angrew. Chem. Int. Engl. 24, No. 6, 1985, pp. 507-508.
Wild, Ferdinand R.W.P., Laszlo Zsolnai, Gottfried Huttner & Hans H. Brintzinger, "Synthesis and Molecular Structures of Chiral ansa-Titanocene Derivatives with Bridged Tetrahydroindenyl Ligands", Journal of Organometallic Chemistry, vol. 232, 1982, pp. 233-247.

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