A process 1, wherein said {HEAD ~ reaction product} of the polyphenol and {TAIL ~ the halide} of the metal is prepared by adding the polyphenol or a solution or suspension thereof in an inert organic solvent to a solution or suspension of the halide of the metal in an inert organic solvent at a temperature of from 50° C. to 150° C 
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A process 1 , wherein said { HEAD ~ reaction product } of the polyphenol and { TAIL ~ the halide } of the metal is prepared by adding the polyphenol or a solution or suspension thereof in an inert organic solvent to a solution or suspension of the halide of the metal in an inert organic solvent at a temperature of from 50 ° C. to 150 ° C
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH