Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 3, 2006
Patent Application Number
11128617
Date Filed
May 13, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A production method of a porous resin or an intermediate therefor, which comprises a step of producing a styrene-acyloxystyrene-divinylbenzene copolymer comprising suspension copolymerization of a styrene monomer, an acyloxystyrene monomer and a divinylbenzene monomer using an organic solvent and water, and a step of converting the styrene-acyloxystyrene-divinylbenzene copolymer to a styrene-hydroxystyrene-divinylbenzene copolymer, wherein a chain transfer agent is added to the suspension copolymerization system.
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