| http://www.w3.org/ns/prov#value | - These promoters may be prepared by making a Grignard reagent from p-bromostyrene, reacting the Grignard reagent with a metal or organometal halide to covalently bond the metal or organometal to the styrene group, and then polymerizing the metal-substituted styrene group with or without unsubstituted styrene and cross-linking agents such as divinylbenzene.
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