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US 8,772,523 B2Granted
Multifunctional chain shuttling agents
AssigneeDow Global Technologies LLC
InventorsThomas P. Clark, Nahrain E. Kamber, Sara B. Klamo, Phillip D. Hustad, David R. Wilson
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Abstract
The invention generally relates to chain shuttling agents (CSAs), a process of preparing the CSAs, a composition comprising a CSA and a catalyst, a process of preparing the composition, a processes of preparing polyolefins, end functional polyolefins, and telechelic polyolefins with the composition, and the polyolefins, end functional polyolefins, and telechelic polyolefins prepared by the processes.
Claims5
A process for preparing a multifunctional chain shuttling agent, the process comprising steps of:
- contacting a hydroxy-, thiol- (i.e., —SH), hydrocarbylamino-, amino- (i.e., —NH2), hydrocarbylphosphino-, or phosphino- (i.e., —PH2) and vinyl-containing polyvalent group to an alkylperhydrocarbylmetal to respectively prepare an organometallic intermediate that is a hydrocarbylmetal vinyl-alkoxide, hydrocarbylmetal vinyl-sulfide, hydrocarbylmetal vinyl-(hydrocarbyl)amine, hydrocarbylmetal vinyl-amine, hydrocarbylmetal vinyl-(hydrocarbyl)phosphine, or hydrocarbylmetal vinyl- phosphine;
- and contacting the organometallic intermediate to a hydrocarbylmetal monohydride, thereby preparing the multifunctional chain shuttling agent, each metal independently being a cation of tin or a metal of any one of Groups 2, 12, and 13 of the Periodic Table of the Elements.
Dependencies are inferred from the claim text.