Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2007-09-18
2007-09-18
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C528S176000, C528S193000, C528S194000, C528S196000, C528S198000
Reexamination Certificate
active
10633672
ABSTRACT:
It is to provide a branched aromatic polycarbonate excellent in hue and excellent in melt properties such as melt strength.A branched aromatic polycarbonate obtained by transesterification and having a viscosity average molecular weight of at least 16,000, wherein the amount of structural units of the following formula (1) contained in its main chain is within a range of from 2,000 to 50,000 wtppm, and the amounts of structural units of the following formulae (2) and (3) contained in its main chain are within a range of from 30 to 10,000 wtppm, respectively:
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Miyamoto Masaaki
Tayama Takao
Boykin Terressa
Mitsubishi Chemical Corporation
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