Process for the polymerizaion of olefins

Details Process for the polymerizaion of olefins Process for the polymerizaion of olefins

2011-04-05

2011-04-05

Lu, Caixia (Department: 1765)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S113000, C526S116000, C526S135000, C526S136000, C526S141000, C526S142000, C526S160000, C526S165000, C526S943000, C502S103000, C502S113000, C502S114000, C502S115000, C502S152000, C502S155000, C502S156000

Reexamination Certificate

active

07919569

ABSTRACT:
The present invention relates to a process for the polymerization of olefins, comprising the steps of introducing at least one olefin, at least one polymerization catalyst, at least one cocatalyst and at least one cocatalyst aid, and optionally a scavenger, into a polymerization reactor, and polymerizing the olefin, wherein the cocatalyst aid is a reaction product prepared separately prior to the introduction into the reactor by reacting at least one metal alkyl compound of group IIA or IIIA of the periodic system of elements and at least one compound (A) of the formula RmXR′n, wherein R is a branched, straight, or cyclic, substituted or unsubstituted, hydrocarbon group having 1 to 30 carbon atoms, R′ is hydrogen or any functional group with at least one active hydrogen, X is at least one heteroatom selected from the group of O, N, P or S or a combination thereof, and wherein n and m are each at least 1 and are such that the formula has no net charge.

REFERENCES:
patent: 5026795 (1991-06-01), Hogan
patent: 5332706 (1994-07-01), Nowlin et al.
patent: 5410002 (1995-04-01), Govoni et al.
patent: 5473028 (1995-12-01), Nowlin et al.
patent: 6140432 (2000-10-01), Agapiou et al.
patent: 6245868 (2001-06-01), Agapiou et al.
patent: 2004/0254316 (2004-12-01), Dickey et al.
patent: 0453116 (1991-10-01), None
patent: 0811638 (1997-12-01), None
patent: 1316773 (1963-02-01), None
patent: WO9611961 (1996-04-01), None
patent: WO97/27228 (1997-07-01), None
patent: WO9746599 (1997-12-01), None
“Counterion Effects on Propylene Polymerization Using Two-State ansa-Metallocene Complexes”, Muqtar et al., J. Am. Chem. Soc., vol. 125, No. 26, p. 7930-7941 (2003).
“Sterically Crowded Aryloxide Compounds of Aluminum”, Healy et al., Organometallics, vol. 7, No. 12, p. 2543-2548 (1988).
Reactions of Trimethylaluminum or Trimethylgallium with Bulky Primary Amines: . . . , Waggoner et al., J. Am. Chem. Soc., vol. 113, No. 9, p. 3385-3393 (1991).
“Synthesis, Structure, and Characterization of [RAI(u-NHEt)(u-NEt)2Si(NHEt)] 2 (R=Me, Et)”, Kaskel et al., Eur. J. Inorg. Chem., p. 1193-1196 (2003).
“Exchange Reactions Between Dialkylzirconocene and Alkylaluminium Compounds”, Siedle et al., Polyhedron, vol. 9, No. 2/3, p. 301-308 (1990).

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