Process for production of butyl rubber

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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C526S339000, C526S348700

Reexamination Certificate

active

07041760

ABSTRACT:
The present invention relates to a process for producing polymers containing repeating units derived from at least one isoolefin monomer, optionally repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of a zinc compound and optionally an organic halide activator.

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Song, X.; Thornton-Pett, M.; Bochmann, M.; Organometallics 1998, 17, 1004-1006 “Synthesis, Structure, and Reactivity of (C5H4SiMe3)2Y{(μ-FC6F4) (μ-Me)B(C6F5)2}: Tight Ion Pairing in a Cationic Lanthanide Complex” with supporting document “General Experimental Procedures”.
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