Aqueous polyorganosiloxane hybrid resin dispersion

1. An aqueous polyorganosiloxane hybrid resin dispersion, comprising:

at least one polyorganosiloxane hybrid resin comprising a reaction product of a composition comprising

component (A): 5 to 95 parts by weight of one or more polyorganosiloxanes of the general formula

R a Si(OR′) b O (4−a−b/2)   Formula (I)

with 0<a<2, 0<b<2 and a+b<4,

optionally, component (B): 0-20 parts by weight of one or more linear polyorganosiloxanes of the formula

R″O—[R′″ 2 Si—O] n —R″  Formula (II), and

component (C): 5 to 95 parts by weight of an organic polymer which is a polyester,

wherein

R a , R′, R″ and R′″ are each independently an alkyl radical having 1 to 8 carbon atoms or an aromatic radical having 6 to 20 carbon atoms and n is a number in the range from 4 to 250,

at least one amphiphilic emulsifier, wherein the emulsifier has an HLB value of 9 to 19 and is a triblock copolymer having a middle block of polypropylene oxide and two terminal blocks of polyethylene oxide or mixtures thereof, and

water.

2. The polyorganosiloxane hybrid resin dispersion according to claim 1 , wherein the organic polymer comprises a hydroxyl group and/or acidic hydrogen.

3. The polyorganosiloxane hybrid resin dispersion according to claim 1 , wherein a residual solvent content is <5.0% by weight, based on the polysiloxane hybrid resin dispersion.

4. The polyorganosiloxane hybrid resin dispersion according to claim 1 , further comprising an additive selected from the group consisting of defoamers, deaerating agents, rheology additives, preservatives, substrate wetting agents, crosslinkers, drying aids, catalysts, antioxidants, anti-skinning agents, anti-settling agents, thickeners, coalescing agents, film-forming aids, fillers, pigments, dispersants and mixtures thereof.

5. The polyorganosiloxane hybrid resin dispersion according to claim 4 , wherein the preservatives used are fungicides, bactericides, pesticides, algicides and/or herbicides.

6. The polyorganosiloxane hybrid resin dispersion according to claim 1 , wherein an average volume-weighted diameter of the polyorganosiloxane hybrid resin particles, measured according to ISO 13320:2009 is between 0.1-10.0 μm.

7. The polyorganosiloxane hybrid resin dispersion according to claim 1 , which has a solids content of 30% by weight-70% by weight, based on the dispersion.

8. A process for preparing aqueous polyorganosiloxane hybrid resin dispersion according to claim 1 , comprising:

emulsifying a polyorganosiloxane hybrid resin solution comprising an organic solvent with at least one emulsifier or an emulsifier system,

adding water, and

removing the solvent.

9. A process for preparing aqueous polyorganosiloxane hybrid resin dispersion according to claim 8 , wherein an aqueous emulsifier solution or an aqueous emulsifier system solution is used, wherein the conductivity thereof, measured to DIN 53779, is between 10-25 000 μS cm −1 .

10. A process for preparing aqueous polyorganosiloxane hybrid resin dispersion according to claim 9 , wherein the conductivity of the aqueous emulsifier solution or the aqueous emulsifier system solution is adjusted.

11. A process according to claim 8 , wherein the organic solvent or mixture thereof has a boiling point range of 50° C.-150° C.

12. A process according to claim 8 , wherein the polyorganosiloxane hybrid resin solution has a polyorganosiloxane hybrid resin concentration of 40.0% by weight-95.0% by weight, based on the polyorganosiloxane hybrid resin solution.

13. Coating materials, coatings, paints, substrate coatings, semifinished products, adhesives, inks, sealants, compounding matrices or sizes, comprising:

the polyorganosiloxane hybrid resin dispersion according to claim 1 .

14. A substrate coated with a composition comprising a dispersion according to claim 1 .