Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heavy metal or aluminum reactant having at least one...
Patent
1987-11-10
1989-10-10
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From heavy metal or aluminum reactant having at least one...
528397, C08G 7900, C08G 8300
Patent
active
048733040
ABSTRACT:
Metallocene polymers characterized as being in a stacked configuration where the monomeric units are constrained to interact with one another across their cofacial cyclopentadienyl ring surfaces, and having the general structure ##STR1## where M represents the metal and n is an integer of 2 or greater. The preparative method involves the coupling reaction between a zincated metallocene and a dihalogen-substituted aromatic, in the presence of a catalyst. The mixture is refluxed, and the resultant polymer is taken up in organic solvent, washed, dried, separated and purified.
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Katz, T. J. and J. Pesti, J. Am. Chem. Soc. 104:346-347, 1982.
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Sudhakar, A., T. J. Katz and B.-W. Yang, J. Am. Chem. Soc. 108:2790, 1986.
Anderson Harold D.
Brandeis University
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