Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2011-03-08
2011-03-08
Gulakowski, Randy (Department: 1766)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S025000, C528S026000, C528S030000, C528S391000, C528S398000
Reexamination Certificate
active
07902313
ABSTRACT:
The present invention provides a process for the preparation of poly(silyl ester)s comprising a structural unit of the formula (I) wherein the process comprises the step of reacting a polyacid of formula (II) with a polyacyloxysilyl derivative of formula (III) while removing the formed acid group(s) of formula R7Z(O)OH (IV). R9Z(O)OH (V), and R8Z(O)OH (VI) from the system.
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Gillard Michel
Plehiers Mark
Vos Marcel
Goodwin & Procter LLP
Gulakowski Randy
Loewe Robert
SigmaKalon B.V.
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