Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From organic oxygen-containing reactant
Reexamination Certificate
2006-10-10
2006-10-10
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From organic oxygen-containing reactant
C528S373000, C528S391000, C528S396000, C568S613000, C568S620000, C524S155000, C524S167000
Reexamination Certificate
active
07119162
ABSTRACT:
Methods of synthesizing a substantially monodispersed mixture of polymers comprising polyethylene glycol moieties include:reacting a substantially monodispersed mixture of compounds having the structure of Formula I:in-line-formulae description="In-line Formulae" end="lead"?R1(OC2H4)n—O−X+ (I)in-line-formulae description="In-line Formulae" end="tail"?wherein R1is H or a lipophilic moiety; n is from 1 to 25; and X+is a positive ion,with a substantially monodispersed mixture of compounds having the structure of Formula II:in-line-formulae description="In-line Formulae" end="lead"?R2(OC2H4)m—OMs (II)in-line-formulae description="In-line Formulae" end="tail"?wherein R2is H or a lipophilic moiety; and m is from 1 to 25, under conditions sufficient to provide a substantially monodispersed mixture of polymers comprising polyethylene glycol moieties and having the structure of Formula III:in-line-formulae description="In-line Formulae" end="lead"?R2(OC2H4)m+n—OR1. (III)in-line-formulae description="In-line Formulae" end="tail"?Substantially monodispersed mixtures of polymers comprising polyethylene glycol moieties are also disclosed.
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Ansari Aslam M.
Ekwuribe Nnochiri N.
Odenbaugh Amy L.
Price Christopher H.
Barrett William A.
Moore & Van Allen PLLC
Nobex Corporation
Truong Duc
LandOfFree
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