C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 57/00 (2006.01) C08K 5/34 (2006.01) C08K 5/3415 (2006.01) C09B 48/00 (2006.01) C09B 67/22 (2006.01)
Patent
CA 2186319
The present invention relates to a solid solution consisting of 60-90 mol-% of an asymmetric 2,5-dihydro-1,4-diketopyrrolo[3,4-c]pyrrole of the formula (I) Image (I), in which G1 and G2 independently of one another are different substituted or unsubstituted aromatic radicals or pyridyl, but the volume of all substituents on G1 and G2 is greater than that of two methyl groups; and 40-10 mol-% of a 2,5-dihydro-1,4-diketopyrrolo[3,4-c]pyrrole of the formula (IIa) Image (IIa), in which G3 and G4 independenlly of one another are different substituted or unsubstituted aromatic radicals or pyridyl, but the volume of all substituents on G3 and G4 is less than that of two butoxy groups; or 40-10 mol-% of a quinacridone of the formula (IIb) (IIb), Image in which R9 is hydrogen, halogen, C1-C4 alkyl or C1-C4 alkoxy; which is a single-phase solid solution having the crystal structure of the asymmetric 2,5-dihydro-1,4-diketopyrrolo[3,4c]pyrrole of the formula (I).
Hao Zhimin
Iqbal Abul
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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