Diaryl yellow pigment preparations

1. A diaryl yellow pigment preparation comprising

a) at least one diaryl yellow pigment,

b) at least one natural resin based on rosin or modified rosin,

c) at least one compound of the formula (1)

in which the ring A is saturated, unsaturated or aromatic and the ring B is saturated or unsaturated;

X is selected from the group consisting of CH 2 —CH 2 —, —CH 2 CH(CH 3 ) —CH(CH 3 )CH 2 —, and a combination thereof;

x 1 and x 2 are a number from 0 to 16, the sum of x 1 and x 2 being a number from 2 to 20;

D 1 and D 2 are identical or different and are a saturated or olefinic C 1 –C 4 -hydrocarbon radical;

A ⊕ and A 2⊕ are an ammonium ion of an amine of the formula

H 2 N—(CR 1 R 2 ) y 1 —(NR 3 —(CR 1 R 2 ) y 2 —) z —NR 4 R 5

in which R 1 to R 5 are identical or different and are hydrogen, methyl or ethyl,

y 1 and y 2 are each a number from 1 to 4, and z is a number from zero to 10; and

d) an aluminum, zinc, manganese or iron compound in an amount of from 0.1 to 8% by weight (calculated as metal cation), based on component b).

2. A diaryl yellow pigment preparation as claimed in claim 1 ,

wherein the diaryl yellow pigment a) is a compound of the formula (2)

in which Ar 1 and Ar 2 are identical or different and are an unsubstituted phenyl group or a phenyl group substituted by from one to three substituents selected from the group consisting of halogen, methyl, and methoxy.

3. A diaryl yellow pigment preparation as claimed in claim 1 ,

wherein the diaryl yellow pigment is C.I. Pigment Yellow 12, 13, 14, 17, 126, 127, 174, 176, 188 or a mixture thereof.

4. A diaryl yellow pigment preparation as claimed in claim 1 ,

wherein the natural resin b) is abietic acid, dehydroebietic acid, dihydroabietic acid, tetrahydroabietic acid, levopimanc acid, dextropimanc acid, isodextropimaric acid, or a mixture thereof.

5. A diaryl yellow pigment preparation as claimed in claim 1 ,

wherein in the compound of the formula (1)

x 1 and x 2 are a number from 1 to 10, the sum of x 1 and x 2 being from 4to 16;

D 1 and D 2 are —CH 2 —, CH 2 CH 2 —, —(CH 2 ) 4 —or —CH═CH—;

y 1 and y 2 are each the number 2 or 3; and

z is a number from 1 to 4.

6. A diaryl yellow pigment preparation as claimed in claim 1 ,

wherein c) is a compound of the formula (1a)

x 3 and x 4 each a number from 2 to 8 and the sum of x 3 and x 4 is a number from 6 to 12, and y 3 is the number 2 or 3.

7. A diary yellow pigment preparation as claimed in claim 1 ,

wherein component d) is a sulfate, carbonate, chloride, nitrate, alkoxide, carboxylate, acetate, citrate or hydroxide of metals Al, Zn, Mn or Fe.

8. A diaryl yellow pigment preparation as claimed in claim 1 ,

consisting essentially of

50 to 90% by weight of component a),

5 to 45% by weight of component b),

0.2 to 5% by weight of component c), and

0.05 to 2% by weight of component d), calculated as metal cation,

based in each case on the total weight (100% by weight) of the pigment preparation.

9. A diaryl yellow pigment preparation as claimed in claim 1 , comprising:

50 to 90% by weight of component a),

5 to 45% by weight of component b),

0.2 to 5% by weight of component c), and

0.05102% by weight of component d), calculated as metal cation,

based in each case on the total weight (100% by weight) of the pigment preparation.

10. A diaryl yellow pigment preparation as claimed in claim 1 , further comprising a polyesteramide.

11. A process for preparing a diaryl yellow pigment preparation as claimed in claim 1 , comprising the steps of coupling an acetoacetylanilide with a tetrazonlum salt of 3,3′-dichlorobenzidine in component c); combining the resulting pigment suspension with an aqueous-alkaline solution of component b) and heating to a temperature between 65 and 150° C.; adding component d) in an amount of from 0.1 to 8% by weight, based on component b), and subsequently precipitating the diary yellow pigment preparation by acidification and isolating the diaryl yellow pigment preparation.

12. A printing ink comprising the diaryl yellow pigment preparation as claimed in claim 1 .

13. An inkjet ink colorant comprising the diaryl yellow pigment preparation as claimed in claim 1 .

14. A toner colorant comprising the diaryl yellow pigment preparation as claimed in claim 1 .

15. The toner colorant as claimed in claim 14 , wherein the toner is selected from the group consisting of electrophatographic toners and developers, magnetic toners, liquid loners, polymerization toners and specialty toners.