Appeal No. 96-0700
Application No. 08/153,550
APPENDIX
1. A process for preparing a fluorescent yellow pigment of
the formula
wherein R and R are independently hydrogen, halogen, C -C alkyl1 2 1 5
or C -C alkoxy, which comprises reacting tetrachlorophthalic
1 3
anhydride with a compound of the formula
wherein R and R are defined as above, at an elevated1 2
temperature, in the presence of a solvent selected from the group
consisting of acetic acid and propionic acid, growing said
pigment in the same step, and subsequently recovering said
pigment.
-1-
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Last modified: November 3, 2007