POWDERY PEARLY LUSTRE COMPOSITION, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF

1 . A non-dust-forming, pulverulent, substantially binder-free pigment composition, wherein

said pigment composition contains the following constituents:

at least 60% by weight of at least one pearl-luster pigment,

from 1 to 15% by weight of non-ionic monomeric wetting agent and/or non-ionic wetting agent based on polysiloxane, and

from 1 to 39% by weight of a solvent or solvent mixture,

the amounts of the constituents totaling 100% by weight, wherein said nonionic wetting agent carries OH groups and has a hydroxyl value of from 30 to 150 mg KOH/g of wetting agent, preferably from 50 to 120 mg KOH/g of wetting agent.

2 . The non-dust-forming, pulverulent pigment composition according to claim 1 , wherein

said pigment composition additionally contains from 1 to 10% by weight, preferably from 2 to 7% by weight, of defoaming agent.

3 . The non-dust-forming, pulverulent pigment composition according to claim 1 , wherein

said pearl-luster pigment is selected from the group consisting of micas coated with highly refractive metal oxide(s), glass platelets coated with highly refractive metal oxide(s), SiO 2 flakes coated with highly refractive metal oxide(s), Al 2 O 3 flakes, TiO 2 flakes, and iron oxide flakes coated with highly refractive metal oxide(s), and mixtures thereof.

4 . The non-dust-forming, pulverulent pigment composition according to claim 1 , wherein

said solvent is water or that said solvent mixture consists substantially of water.

5 . The non-dust-forming, pulverulent pigment composition according to claim 1 , wherein

the pigment composition contains less than 1% by weight, preferably less than 0.5% by weight, of binding agent.

6 . The non-dust-forming, pulverulent pigment composition according to claim 1 , wherein

the pigment composition is binder-free.

7 . The non-dust-forming, pulverulent pigment composition according to claim 1 , wherein

the monomeric wetting agent has the following structure (I):

wherein R 1 , R 2 , R 3 , and R 4 independently stand for hydrogen, a straight-chain or branched-chain alkyl group having from 1 to 10 carbons and optionally having OH groups, or an aryl group containing from 1 to 12 carbons, wherein the aryl group can be substituted by alkyl groups containing from 1 to 10 carbons, wherein each of the alkyl and/or aryl groups can have OH groups, and X stands for a single bond, a double bond or a triple bond, wherein A stands for CH 2 when X is a single bond, A stands for CH when X is a double bond, and A stands for C when X is a triple bond.

8 . The non-dust-forming, pulverulent pigment composition according to claim 7 , wherein

R 1, R 2 , R 3 , and R 4 independently stand for methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, or tert-butyl.

9 . The non-dust-forming, pulverulent pigment composition according to claim 7 , wherein

R 1 and R 4 each denote tert-butyl and R 2 and R 3 preferably each denote methyl.

10 . The non-dust-forming, pulverulent pigment composition according to claim 1 , wherein

the wetting agent based on polysiloxane is a polysiloxane substituted by an alkyl, aryl, alkoxy, and/or polyalkylene oxide radical, wherein the polysiloxane has the following structure (II):

wherein

R 1 , R 2 , and R 3 independently stand for an alkyl, aryl, alkoxy, and/or polyalkylene oxide radical,

n stands for an integer from 1 to 1000, preferably from 5 to 500,

p stands for an integer from 1 to 1000, preferably from 5 to 500, and

m stands for an integer from 0 to 50, preferably from 0 to 25.

11 . The non-dust-forming, pulverulent pigment composition according to claim 10 , wherein

the alkyl groups are independently selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, and tert-butyl, and are preferably each methyl.

12 . The non-dust-forming, pulverulent pigment composition according to claim 10 , wherein

the alkoxy radicals are independently selected from the group consisting of methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, and tert-butoxy, and are preferably each methoxy and/or ethoxy.

13 . The non-dust-forming, pulverulent pigment composition according to claim 10 , wherein

the polyalkylene oxide radicals are independently selected from the group consisting of polymethylene oxide, polyethylene oxide, polypropylene oxide, and polybutylene oxide and are preferably each polyethylene oxide.

14 . The non-dust-forming, pulverulent pigment composition according to claim 10 , wherein

the polyalkylene oxide radicals are composed of from 1 to 100, preferably from 2 to 50 and more preferably from 5 to 20 alkylene oxide units.

15 . A method for the preparation of a non-dust-forming, pulverulent, substantially binder-free pigment composition according to claim 1 , wherein

the individual constituents are homogeneously intermixed, preferably in a gentle manner.

16 . The use of the non-dust-forming, pulverulent, substantially binder-free pigment composition according to claim 1 in printing inks, paints, and cosmetic formulations.