Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2008-03-18
2008-03-18
Wu, David W. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S213000, C526S313000, C525S061000, C525S328800, C525S286000
Reexamination Certificate
active
07345126
ABSTRACT:
The present invention provides a production method of a hydroxyl-containing polymer including: protecting a hydroxyl group of a hydroxyl-containing monomer with a protecting group to make the monomer a protected monomer with decreased hydrophilicity; adding the protected monomer alone or together with a hydrophobic monomer to a water-based medium containing a salt and a dispersion stabilizer; adding a polymerization initiator to the mixture to carry out suspension polymerization; and de-protecting the obtained polymer having the protecting group to recover the hydroxyl group.
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Inaba Yoshihiro
Kobayashi Takako
Urano Chisato
Yamamoto Hiroshi
Bernshteyn M.
Fildes & Outland, P.C.
Fuji 'Xerox Co., Ltd.
Wu David W.
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