Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2008-03-26
2009-08-18
Puttlitz, Karl J (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S400000, C562S412000
Reexamination Certificate
active
07576237
ABSTRACT:
2,5-dihydroxyterephthalic acid is produced in high yields and high purity from 2,5-dihaloterephthalic acid by contact with a copper source and a ligand that coordinates to copper under basic conditions.
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E.I. du Pont de Nemours and Company
Katakam Sudhakar
Langworthy John A.
Puttlitz Karl J
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