Porous resin particle having hydroxy group or primary amino...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

Reexamination Certificate

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Details

C428S402220, C521S062000, C521S063000, C521S064000, C521S139000, C521S140000, C521S146000, C521S147000, C524S457000, C524S475000, C524S555000, C524S800000, C524S848000

Reexamination Certificate

active

08076383

ABSTRACT:
The present invention relates to a method for producing a porous resin particle having a functional group X, the method including: dissolving a radical polymerizable aromatic monovinyl monomer and a radical polymerizable aromatic divinyl monomer together with a polymerization initiator in an organic solvent to prepare a monomer solution, dispersing the monomer solution in water in the presence of a dispersion stabilizer to obtain a suspension polymerization reaction mixture, and performing a suspension copolymerization while adding, when 0 to 80% of the entire polymerization time of the suspension copolymerization is passed, a mercapto compound represented by the formula (I):in-line-formulae description="In-line Formulae" end="lead"?HS—R—X  (I)in-line-formulae description="In-line Formulae" end="tail"?in which R represents an alkylene group having a carbon number of 2 to 12, and the functional group X represents a functional group selected from a hydroxy group and a primary amino group, to the suspension polymerization reaction mixture; and the porous resin particle obtained by the method.

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Extended European Search Report dated Feb. 19, 2009.
Office Action dated Jul. 20, 2011 from the State Intellectual Property Office of the People's Republic of China in counterpart Chinese application No. 200810174429.7.

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