Suspension polymerization of styrene monomers in the presence of carbon black
AssigneeEastman Kodak Company
InventorHenry V. Isaacson
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Abstract
A suspension polymerization process for polymerizing a styrene-containing monomer composition in the presence of untreated carbon black to produce a polymer comprising more than 40 weight percent of styrene moiety is described. The monomer composition comprises at least one styrene monomer having a substituent with a Hammett sigma value more positive than about 0.06.
Claims4
A suspension polymerization process for polymerizing in the presence of untreated carbon black containing absorbed oxygen a polymer comprising more than 40 weight percent styrene moiety which comprises suspending in a continuous liquid phase for polymerization a dispersion comprising monomer, initiator and said carbon black, said monomer comprising styrene moiety having a substituent with a Hammett sigma value more positive than about 0.06.
Dependencies are inferred from the claim text.