Mixed crystals of sulfonated diketopyrrolopyrroles

Details Mixed crystals of sulfonated diketopyrrolopyrroles Mixed crystals of sulfonated diketopyrrolopyrroles

C - Chemistry, Metallurgy

09

B

C09B 57/00 (2006.01) C07D 487/04 (2006.01) C08K 5/3415 (2006.01) C09B 67/22 (2006.01) C09B 69/04 (2006.01)

Patent

CA 2111606

Mixed crystals of sulfonated diketopyrrolopyrroles Abstract of the Disclosure Mixed crystals of at least two different compounds of formula Image (I), wherein A and B are each independently of the other a cation of formula Image or N+H(R1)(R2)(R3) M is a mono-, di- or trivalent metal cation, n is 1, 2 or 3, R1, R2 and R3 are each independently of one another hydrogen, C1-C22alkyl, C7-C24aralkyl, C5-C6cycloalkyl or C6-C18aryl, m is 0 or 1, and R is hydrogen, C1-C4alkyl or C1-C4alkoxy, in which compounds of formula I that form the mixed crystals the cations A and B constitute a composite structure Image , wherein x is a value from 0.2 to 0.8, and the X-ray diffraction pattern of said mixed crystals differs from that of the corresponding compounds in which x is 1 or 0. These mixed crystals can be used as pigments for colouring organic material of high molecular weight and have exceptional properties, especially dispersibility, heat- and lightfastness.

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