Syndiotactic propylene elastomers

Details Syndiotactic propylene elastomers Syndiotactic propylene elastomers

2005-11-22

2010-02-16

Rábago, Roberto (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S127000, C526S134000, C526S160000, C526S351000, C525S240000

Reexamination Certificate

active

07662895

ABSTRACT:
Disclosed herein is an elastomeric composition comprising propylene, the composition further comprising a peak melting point temperature below about 110° C., a tensile set of 40% or less, and greater than or equal to about 60% [r]dyads, based on the total number of dyads present in the composition. A process to produce an elastomeric composition is also disclosed.

REFERENCES:
patent: 3175999 (1965-03-01), Natta et al.
patent: 3329741 (1967-07-01), Schrage et al.
patent: 3511824 (1970-05-01), Listner
patent: 3784502 (1974-01-01), Gobran et al.
patent: 4335225 (1982-06-01), Collette et al.
patent: 4826939 (1989-05-01), Stuart, Jr.
patent: 5270276 (1993-12-01), Job
patent: 5272003 (1993-12-01), Peacock
patent: 5326824 (1994-07-01), Asanuma et al.
patent: 5373059 (1994-12-01), Asanuma et al.
patent: 5374685 (1994-12-01), Asanuma et al.
patent: 5476914 (1995-12-01), Ewen et al.
patent: 6084047 (2000-07-01), Holliday et al.
patent: 6184326 (2001-02-01), Razavi et al.
patent: 6245870 (2001-06-01), Razavi
patent: 6265512 (2001-07-01), Siedle et al.
patent: 2003/0083434 (2003-05-01), Ouhadi et al.
patent: 0 351 392 (1990-01-01), None
patent: 0 433 987 (1991-06-01), None
patent: 0 697 436 (1996-02-01), None
patent: 0 773 238 (1997-05-01), None
patent: WO 94/24195 (1994-10-01), None
Japanese Abstract—JP01152448A (Jun. 14, 1989).
Japanese Abstract—JP03025553 (Feb. 4, 1991).
Japanese Abstract—JP2824082 (Apr. 9, 1998).
Japanese Abstract—JP2837246 (Nov. 11, 1998).
“Mechanisms of Stereocontrol for Doubly Silylene-Bridged Cs- and C1-Symmetric Zirconocene Catalysts for Propylene Polymerization. Synthesis and Molecular Structure of Li2[1,2-Me2Si)2{C5H2-4-(1R,2S,5R-menthyl)} {C5H-3,5-(CHMe2)2)}] 3 THF and [(1,2-Me2Si)2({acute over (η)}5-C5H2-4-(1R,2S,5R-menthyl)}{{acute over (η)}5-C5H-3,5-(CHMe2)2)}]ZrCl2,”Veghini et al., J. Am Chem. Soc. 1999, vol. 121, p. 564-573.
“Ultrahigh Molecular Weight Polypropene Elastomers by High Activity “Dual-Side” Hafnocene Catalysts,” Rieger et al., Macromolecules 2002, vol. 35, p. 5742-5743.

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