Pigment composition

2:

• The pigment composition according to claim 1, wherein
• the adduct (b1) contains the compound of formula (I) or a tautomeric form thereof,
• wherein X and Y are O;
• -A-B— is —CY—CR8R9— or —CX—NR10—;
• R8, R9 and R10 are hydrogen;
• and
• the compound of formula (II) or a tautomeric form thereof, wherein
• Z is N;
• and R15, R16 and R17 are independently of each other hydrogen or C1-C4alkyl.

3:

• The pigment composition according to claim 1, wherein the adduct (b1) contains the compound of formula (I) or a tautomeric form thereof,
• wherein X and Y are O;
• -A-B— is —CY—CR8R9— or —CX—NR10—;
• R8, R9 and R10 are hydrogen;
• and
• the compound of formula (II) or a tautomeric form thereof, wherein
• Z is CR18;
• R18 is hydrogen, C1-C4alkyl, phenyl or C7-C10aralkyl;
• and
• R15, R16 and R17 are independently of each other hydrogen or C1-C4alkyl.

4:

• The pigment composition according to claim 1, wherein the adduct (b1) contains the compound of formula (II) or a tautomeric form thereof,
• wherein X and Y are O;
• -A-B— is —CY—CR8R9— or —CX—NR10—;
• R8, R9 and R10 are hydrogen;
• and
• the compound of formula (II) or a tautomeric form thereof,
• wherein Z is N;
• and R15, R16 and R17 are hydrogen.

5:

• The pigment composition according to claim 1, wherein the adduct (b3) contains the compound of formula (II) or a tautomeric form thereof, and a compound of formula HOOC—R19—COOH (IV), wherein
• R19 is a direct bond, C1-C8alkylene, C2-C8alkenylene, C3-C7cycloalkylene or C6-C10arylene;
• said alkylene, cycloalkylene or alkenylene is unsubstituted or substituted with halogen or OH, and said alkylene may further be interrupted by O, S, NR20, phenyl, naphthyl or cyclohexylene,
• said arylene is unsubstituted or substituted with halogen, OH or C1-C4alkyl;
• and
• R20 is hydrogen or C1-C4alkyl.

7:

• The pigment composition according to claim 1, wherein the adduct (b2) is formed of a compound of formula (I) or a tautomeric form thereof, wherein
• X and Y are O;
• -A-B— is selected from the group consisting of —CR2═CR3—, —CY—CR8R9— and —CX—NR10—;
• R2, R3 and R10 are hydrogen;
• and
• R8 and R9 are independently of each other hydrogen, halogen or C1-C4alkyl.

17:

• A process of stabilizing a dioxazine pigment, the process comprising adding, to a dioxazine pigment, an adduct (b) selected from
• (b1) an adduct containing a compound of formula
• or a tautomeric form thereof, wherein
• X is O, S or NR1;
• Y is O, S or NR1;
• -A-B— is selected from the group consisting of —CR2═CR3—, —CR4R5—CR6R7—, —CY—CR8R9—, —CX—NR10—, —CR11═N—, —CR12R13—NR14— and
• R1 is hydrogen, C1-C8alkyl, C3-C7cycloalkyl, C6-C10aryl or C7-C10aralkyl;
• R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are independently of each other hydrogen, halogen, C1-C8alkyl, C2-C8alkenyl or C6-C10aryl, or
• R2 and R3 form a benzoannellated ring;
• said alkyl, cycloalkyl or alkenyl is unsubstituted or substituted with halogen or OH;
• said aryl or benzoannellated ring is unsubstituted or substituted with halogen, OH or C1-C4alkyl;
• and
• a compound of formula
• or a tautomeric form thereof, wherein
• Z is N or CR18;
• R18 is hydrogen, C1-C8alkyl, C2-C8alkenyl, C6-C10aryl or C7-C10aralkyl;
• R15, R16 and R17 are independently of each other hydrogen, C1-C8alkyl, C6-C10aryl, C7-C10aralkyl or a group of formula
• said alkyl or alkenyl is unsubstituted or substituted with halogen or OH,
• said aryl is unsubstituted or substituted with halogen, OH or C1-C4alkyl;
• or
• (b2) an adduct containing a compound of formula
• or a tautomeric form thereof, wherein
• X is O, S or NR1;
• Y is O, S or NR1;
• -A-B— is selected from the group consisting of —CR2═CR3—, —CR4R5—CR6R7—, —CY—CR8R9—, —CX—NR10—, —CR11═N—, —CR12R13—NR14— and
• R1 is hydrogen, C1-C8alkyl, C3-C7cycloalkyl, C6-C10aryl or C7-C10aralkyl;
• R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are independently of each other hydrogen, halogen, C1-C8alkyl, C2-C8alkenyl or C6-C10aryl, or
• R2 and R3 form a benzoannellated ring;
• said alkyl, cycloalkyl or alkenyl is unsubstituted or substituted with halogen or OH;
• said aryl or benzoannellated ring is unsubstituted or substituted with halogen, OH or C1-C4alkyl;
• or
• (b3) an adduct containing a compound of formula
• or a tautomeric form thereof, wherein
• Z is N or CR18;
• R18 is hydrogen, C1-C8alkyl, C2-C8alkenyl, C6-C10aryl or C7-C10aralkyl;
• R15, R16 and R17 are independently of each other hydrogen, C1-C8alkyl, C6-C10aryl, C7-C10aralkyl or a group of formula
• said alkyl or alkenyl is unsubstituted or substituted with halogen or OH, and
• said aryl is unsubstituted or substituted with halogen, OH or C1-C4alkyl.