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Preparation of 1,4-diketo-3,6-diphenylpyrrolo-3,4-C-pyrrole
Preparation of 1,4-diketo-3,6-diphenylpyrrolo-3,4-C-pyrrole
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机译：1,4-二酮-3,6-二苯基吡咯并[3,4-C]-吡咯的制备
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摘要
The present invention relates to a process for the preparation of 1,4-diketo-3,6-diphenylpyrrolo-[3,4-C]-pyrrole by heating at elevated temperature, preferably at elevated temperature, Dimetho-3,6-diazabicyclo [2.2. /RTI RTI ID = 0.0 Diphenylpyrrolo-[3,4-C]-pyrrole. /RTI This platelet having an average particle diameter of less than 4 m and a thickness of 1.5 m or less was obtained by X-ray diffraction pattern and differential scanning calorimetry curve using 1,4-diketo-3,6-diphenylpyrrolo-[3,4 /RTI -C]-pyrrole.;A novel platelet form of 1,4-diketo-3,6-diphenylpyrrolo-[3,4-C]-pyrrole is prepared by reacting crude 1,4-diketo-3,6-diphenyl-[3,4-C]-pyrrole and exhibits a unique hue effect and excellent heat resistance when used as a pigment. The novel platelet form of 1,4-diketo-3,6-diphenylpyrrolo-[3,4-C]-pyrrole can be colored by polymerizing organic macromolecules that can be cast into molded articles or by lacquer and enamel coating It is very suitable for the painting of compositions, especially for automotive coatings.
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