Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2006-07-04
2006-07-04
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C428S131000, C526S067000, C526S068000, C528S198000
Reexamination Certificate
active
07071283
ABSTRACT:
The invention relates to a method for producing polycarbonate according to the method for the transesterification of molten mass whereby bis-(hydroxyaryl) compounds (bisphenols) and diaryl carbonates are reacted by means of reactive rectification.
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Ullmann's Encyclopedia of Industrial Chemistry, Fifth Ed., vol. B4, pp. 321-328, VCH Publishers XP002184035 Seite 321, rechte Spalte -Seite 323, rechte Spalte, Zeile 9 Seite 327, linke Spalte, Absatz 2 -Seite 327, rechte Spalte.
Bachmann Rolf
Dikow Edmund
Gottschalk Lutz
John Gerald
Mendoza-Frohn Christine
Bayer MaterialScience AG
Boykin Terressa
Gil Joseph C.
Preis Aron
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