Catalyst deactivation agents and methods for use of same

Details Catalyst deactivation agents and methods for use of same Catalyst deactivation agents and methods for use of same

2006-04-13

2008-11-04

Teskin, Fred M (Department: 1796)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C528S491000, C526S064000, C526S082000, C526S084000

Reexamination Certificate

active

07446167

ABSTRACT:
A method of deactivating a polymerization catalyst system comprising contacting the catalyst system with a catalyst deactivation agent wherein the catalyst system comprises an alkyl aluminum cocatalyst and the reaction of the catalyst system and catalyst deactivation agent produces reaction products that are noncorrosive, nongelatinous, or both. A method of inhibiting the polymerization of propylene comprising contacting a polymerization catalyst system with a catalyst deactivation agent wherein the catalyst system comprises an alkyl aluminum cocatalyst and the reaction of the cocatalyst and the catalyst deactivation agent produces reaction products that are noncorrosive, nongelatinous, or both. A method of deactivating a polymerization catalyst system having an alkyl aluminum cocatalyst, comprising contacting the catalyst system with an alcohol, a carboxylic acid, an alkylene glycol, or combinations thereof.

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