Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2007-03-20
2009-06-02
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C524S115000, C524S130000, C524S133000, C525S394000, C525S471000, C528S198000, C528S425000, C548S471000, C548S472000
Reexamination Certificate
active
07541420
ABSTRACT:
A method for preparing a molded article includes the steps of (a) obtaining a polycarbonate resin and (b) molding the polycarbonate resin. The polycarbonate resin is made by a transesterification reaction using an activated diaryl carbonate such that the polycarbonate is susceptible to the formation of internal ester linkages (IEL). The method occurs with the proviso that the polycarbonate resin, the molding conditions or both are selected to control the amount of IEL formed during the molding process to a level of less than 0.4 mol %.
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Berndsen Sjef
Brack Hans Peter
Jansen Bernd
Kamps Jan Henk
Kung Edward
Boykin Terressa M
Larson & Anderson LLC
Sabic Innovative Plastics IP B.V.
LandOfFree
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