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Section:	Main.POLYMERS.Poly(Isobutene).Co.: USA. E. (Producer).Patent.Claims Etc.Claim 1 Catalyst System Formula.##STR16##, R1,R2,R3,G=H Etc &.No. of ---(CH.sub.2 --CG.sub.2)--.>1 Incorporated in Polymer Chain., NCA=[(M)m+ Q.1. . . Q.n].d-,.M=Metal, Q1 to Qn=(Un)Bridged.Hydride Radicals Etc., m=Valence.of M, n=No. of Ligands Q, d>1..Claim 4 Catalyst System (a).Cation Compn Ge, Sn or Pb & (b) NCA.Claim 5 Catalyst System Formulae.E, F, G and H: ##STR19##, B=.PolyIsobutene Etc., (A-Cp)=(Cp)(Cp*.), Cp & Cp*=Cyclopentadienyl Rings.Patent Assignee
Code:	65982
Product:	USA. E
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