Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2004-06-21
2010-06-22
Seidleck, James (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C564S335000
Reexamination Certificate
active
07741426
ABSTRACT:
A method for the production of a fluorinated phenylenediamine is provided which comprises steps of reacting a diamide represented by the following formula with NaOCl at a molar ratio of the NaOCl to the diamide in the range of 2.0-6.0 and NaOH at a molar ratio of the NaOH to the diamide in the range of 1.8-6.0 is provided. According to this invention, the fluorinated phenylenediamine can be produced conveniently in a high yield.
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Masuda Go
Nishimae Shinji
Okumura Yasunori
Listvoyb Gregory
Nippon Shokubai Co. Ltd
Occhiuti Rohlicek & Tsao LLP
Seidleck James
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