Diketopyrrolopyrroles containing nitroxyl groups

Details Diketopyrrolopyrroles containing nitroxyl groups Diketopyrrolopyrroles containing nitroxyl groups

C - Chemistry, Metallurgy

09

B

C09B 57/00 (2006.01) C07D 487/04 (2006.01) C08K 5/3415 (2006.01) C09D 17/00 (2006.01)

Patent

CA 2116064

Diketopyrrolopyrroles containing nitroxyl groups Abstract of the Disclosure Diketopyrrolopyrroles of formula Image (I), wherein R1, R2, R3 and R4 are each independently of one another hydrogen, chloro, C1-C4alkyl, methoxy, phenyl, cyano or a group -X1-V-X2T-A, in which at least one of R1, R2, R3 or R4 contains the group A, A is a group of formula Image , Image or (II) (III) Image (IV) wherein Y is O?, OH or OR, and R is C1-C12alkyl or C5-C12cycloalkyl. The symbols X1, X2 V, T, Q and Z are as defined in claim 1. These diketopyrrolopyrroles are suitable for use as pigments having excellent fastness to light and weathering, and also as light stabilisers in mixtures with other diketopyrrolopyr- roles.

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