Modification of perylenetetracarboxylic...

Details Modification of perylenetetracarboxylic... Modification of perylenetetracarboxylic...

C - Chemistry, Metallurgy

09

B

400/1000, 260/27

C09B 57/00 (2006.01) C09B 5/62 (2006.01) C09B 67/14 (2006.01) C09B 67/48 (2006.01) D06P 1/00 (2006.01)

Patent

CA 1144549

Abstract Perylenetetracarboxylic acid-bis-(3,5-dimethylphenyl)- imide in a novel .gamma.-modification characterised by an X-ray diffraction spectrum exhibiting very strong lines at interplanar spacings of 8.3, 3.61, 3.46 and 3.30 .ANG., and strong lines at interplanar spacings of 17.2, 10.3, 7.2, 6.7 and 4.09. The pigment is suitable for dyeing high-molecular organic material. Compared with the known yellowish-red modifications, the .gamma.-modification is characterised by a bluish-red shade.

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