12. An aluminoxane is an oligomeric organic aluminoxy compound. Geerts’ specification
describes aluminoxanes as compounds having repeating units of the formula:
O Al
R
R in the formula is a hydrocarbyl group. GX 1, col. 3, lines 19-26.
13. Geerts’ specification describes that aluminoxanes were most commonly produced by
hydrolysis an alkyl aluminum compound. GX 1, col. 1, lines 25-29.
14. The aluminoxy compounds of the parties’ invention are the reaction product of a hydrocarbyl
boronic acid with an organo aluminum compound.
15. The hydrocarbyl boronic acid compounds have one of the following structural formulas:
OH HO OH R
R B B R' B R B
OH HO OH OH
16. “R” in the above formulas is a monovalent hydrocarbyl radical and “R'” is a divalent
hydrocarbyl radical.
17. The organo aluminum compound may be a trihydrocarbyl aluminum compound. Such
compounds have the following structural formula:
R
R Al
R
18. “R” in the above formula represents a hydrocarbyl.
19. Trimethylaluminum is a trihydrocarbyl aluminum compound. Trimethylaluminum may be
represented by the following formulas: (CH3)3Al, Me3Al, AlMe3 or
3
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Last modified: November 3, 2007