Particulate wax composites and method for the production thereof and the use thereof

1. A dispersion or carrier comprising inorganic-organic composite particles in the form of composite nanoparticles having particle sizes in the range from 1 to 1000 nm, the composite particles comprising at least one organic-based material, which consists of at least one wax, and an inorganic-based material;

wherein the organic-based material is deposited on the inorganic-based material,

wherein the weight-based ratio of organic-based material to inorganic-based material in the composite particles varies in the range from 1:1 to 50:1;

wherein the inorganic-based material of the composite particles is present in the form of inorganic nanoparticles with particle sizes of the inorganic nanoparticles in the range from 0.5 to 750 nm;

wherein the inorganic-based material of the composite particles is selected from the group consisting of aluminum oxide and silicone dioxide;

wherein the organic-based material of the composite particles is formed of at least one wax, wherein the wax is selected from the group of (i) natural waxes; (ii) chemically modified waxes; (iii) synthetic waxes; and also mixtures thereof,

wherein the organic-based material of the composite particles comprises functional groups which are capable of interacting with the inorganic-based material and of forming physical and/or chemical bonds therewith;

wherein the functional groups are polar groups which contain heteroatoms from the group of O, N and/or S; and

wherein the concentration of inorganic-organic composite particles is between 0.5 and 10% by weight of the dispersion or carrier.

2. The dispersion or carrier as claimed in claim 1 , wherein the composite particles have particle sizes in the range from 2 to 750 nm.

3. The dispersion or carrier as claimed in claim 1 , wherein the inorganic-based material of the composite particles is present in the form of inorganic nanoparticles with particle sizes of the inorganic nanoparticles in the range from 1 to 500 nm.

4. The dispersion or carrier as claimed in claim 1 , wherein the functional groups are selected from hydroxyl groups, polyether groups, polyalkylene oxide groups, and/or carboxyl groups.

5. The dispersion or carrier as claimed in claim 1 , wherein the inorganic-based material of the composite particles is surface-modified.

6. The dispersion or carrier as claimed in claim 1 , wherein the inorganic-based material of the composite particles is surface-modified by means of polysiloxane groups.

7. The dispersion or carrier as claimed in claim 1 , wherein the composite particles are obtained by joint precipitation or co-precipitation of organic-based and inorganic-based material via deposition of the organic-based material on the inorganic-based material.

8. A process for preparing a dispersion or carrier as claimed in claim 1 comprising inorganic-organic composite nanoparticles, wherein at least one organic-based material which consists of at least one wax, and an inorganic-based material, are precipitated jointly from a medium comprising them;

wherein the starting materials are used in a weight-based ratio of organic-based material to inorganic-based material in the range from 1:1 to 50:1;

wherein the inorganic-based material is used in the form of inorganic nanoparticles with particle sizes of the inorganic nanoparticles in the range from 0.5 to 750 nm;

wherein inorganic-based material used is selected from the group consisting of aluminum oxide and silicone dioxide

wherein organic-based material used is at least one wax selected from the group consisting of (i) natural waxes; (ii) chemically modified waxes; (iii) synthetic waxes; and mixtures thereof; and

wherein the organic-based material used comprises functional groups which contain heteroatoms from the group of O, N and/or S; which are capable of interacting with the inorganic-based material and of forming physical and/or chemical bonds therewith.

9. A coating material comprising the dispersion or carrier of claim 1 .

10. The coating materials of claim 9 , wherein the coating materials are selected from the group consisting of paints, inks, plastics, foams, cosmetics, nail varnishes, adhesives, and sealants.