Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2008-11-05
2011-12-13
Cooney, John (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
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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Konishi Tatsuya
Mori Kenjiro
Cooney John
Nitto Denko Corporation
Sughrue & Mion, PLLC
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