Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2008-01-08
2008-01-08
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C156S230000, C156S241000, C156S247000, C428S343000, C428S354000, C524S556000, C524S558000, C524S588000, C524S589000
Reexamination Certificate
active
07317065
ABSTRACT:
The present invention provides a highly functional hyperbranched polyester which may be obtained by a process which comprises reacting a reaction solution containing solvent and reactants in the presence of an enzyme at a temperature above 60° C. and a pressure above 500 mbar.
REFERENCES:
patent: 6562603 (2003-05-01), Bramucci et al.
T. Tsujimoto, et al., “Enzymatic Synthesis of Cross-Linkable Polyesters From Renewable Resources”, American Chemical Society, 2001.
S. Wada, et al., “The Synthesis of Hyperbranched Polyesters by Enzyme-Catalyzed Polymeration”, pp. 1-5.
Bruchmann Bernd
Haering Dietmar
Keller Peter
Pouhe Thomas
Wagner Eva
BASF - Aktiengesellschaft
Boykin Terressa
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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