Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2007-06-05
2007-06-05
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C560S080000, C562S485000
Reexamination Certificate
active
11077481
ABSTRACT:
The present invention relates to a process by which a carboxylic acid/diol mixture is obtained from a carboxylic acid/solvent slurry without isolation of a substantially dry carboxylic acid solid. More specifically, the present invention relates to a process by which a terephthalic acid/ethylene glycol mixture is obtained from a terephthalic acid/solvent slurry without isolation of a substantially dry terephthalic acid solid.
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Hall Duane Alan
Lin Robert
Parker Kenny Randolph
Upshaw Timothy Alan
Boykin Terressa
Eastman Chemical Company
Graves, Jr. Bernard J.
Owen Steven A.
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