C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 57/08 (2006.01) C09B 5/62 (2006.01)
Patent
CA 2073747
This invention relates to a novel process for the continuous preparation of perylenetetracarboxylic diimides by fusion of a naphthalimide in a mixture of an alkali metal hydroxide and, optionally, an alkali metal carboxylate to form an initial leuko condensation product that is subsequently oxidized in an aqueous medium to form the perylenetetra- carboxylic diimide.
Corporation Bayer
Miles Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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