申请人:Wallquist Olof
公开号:US20080287689A1
公开(公告)日:2008-11-20
The present invention relates to a process for the preparation of a mixture comprising at least two structurally different diketopyrrolopyrrole pigments of formula
wherein
A
1
and A
2
are each independently of the other an aromatic or heteroaromatic radical, by reacting a succinic acid ester with at least one unsubstituted or substituted aromatic or heteroaromatic nitrile, which process comprises carrying out the reaction in the presence of at least one compound of formula
wherein
A is an aromatic or heteroaromatic radical, R
3
is hydrogen, halogen, methyl, methoxy, —CF
3
or —CN, R
4
is a linear or, from C
3
upwards, optionally branched C
1
-C
30
alkyl, C
6
-C
10
aryl or C
6
-C
24
aralkyl radical, X is —S—, —O—, —CR
5
R
5
′—, —COO—, —CONR
5
—, —SO—, SO
2
—, —SO
2
NR
5
— or —NR
5
— and R
5
and R
5
′ are each independently of the other hydrogen or a linear or, from C
3
upwards, optionally branched C
1
-C
30
alkyl, C
6
-C
10
aryl or C
6
-C
24
aralkyl radical,
to the use of such a mixture in the colouring of organic material and in cosmetics, and also to novel diketopyrrolopyrrole pigment mixtures.
本发明涉及制备至少两种结构不同的二酮吡咯烷酮颜料混合物的方法,其化学式为其中A1和A2分别独立地为芳香或杂芳基团,通过将琥珀酸酯与至少一种未取代或取代的芳香或杂芳基腈反应来实现反应,该过程包括在至少一种化合物存在下进行反应,该化合物的化学式为其中A为芳香或杂芳基团,R3为氢、卤、甲基、甲氧基、—CF3或—CN,R4为线性或从C3开始的可选支链C1-C30烷基、C6-C10芳基或C6-C24芳基烷基基团,X为—S—、—O—、—CR5R5′—、—COO—、—CONR5—、—SO—、SO2—、—SO2NR5—或—NR5—,R5和R5′各自独立地为氢或线性或从C3开始的可选支链C1-C30烷基、C6-C10芳基或C6-C24芳基烷基基团。本发明还涉及在有机材料和化妆品的着色中使用这种混合物以及新的二酮吡咯烷酮颜料混合物。