Aqueous binders containing layered silicate, process for the production thereof and use thereof in aqueous coating compositions
OwnerArmin Goebel, Werner Bosch +4inventors
InventorsArmin Goebel, Werner Bosch, Juergen Doebert, Marcus Brunner, Marco Taschner, Bettina Vogt-Birnbrich
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Abstract
Aqueous binders containing 0.2 to 7 wt-% of layered silicate, relative to binder solids content, obtainable by converting a homogeneous mixture of layered silicate and non-aqueous binder (precursor) into the aqueous phase by mixing with water and, in the case of a binder precursor, concluding synthesis of the binder in the aqueous phase.
Claims9
1-8. (canceled)
A process for the production of water-borne base coat/clear coat two layer coatings, wherein the water-borne base coat layer is applied from an aqueous coating composition containing an aqueous binder comprising a binder and 0.2 to 7 wt-% of a silicate, relative to binder solids content, consisting of at least one layered silicate;
- wherein the aqueous binder is obtained by converting a homogeneous mixture of the layered silicate and non-aqueous water dilutable binder into the aqueous phase by mixing with water, wherein the non-aqueous water-dilutable binder is selected from the group consisting of a melt of the binder and an organic solution of the binder.
The process of claim 11, wherein the aqueous binder contains 0.5 to 5 wt-% of the layered silicate, relative to binder solids content.
The process of claim 11, wherein the aqueous binder is an aqueous solution or an aqueous dispersion.
Dependencies are inferred from the claim text.