Aqueous binder solutions
View Patent ↗The present invention is directed to aqueous systems for polyamideimide, polyether imide, and/or polyamic acid binder solutions. The present invention provides stable aqueous binder solutions equivalent or superior to current aqueous binder solutions.
1. An aqueous binder solution comprising a) water, b) polyamideimide or polyether imide, c) an amine, and d) solvent comprising acetoacetamides.
2. An aqueous binder solution of claim 1 further comprising one or more of: viscosity modifiers, thinning solvent, binders, pigments, fillers, dispersing aids, surface tension modifiers, and fluoropolymers.
3. The aqueous binder solution of claim 2 wherein the thinning solvent is a diether, an alcohol, or a glycol ether.
4. The aqueous binder solution of claim 1 , wherein the solvent is selected from acetoacetamide, dimethyl acetoacetamide, n-methyl acetoacetamide, diethyl acetoacetamide, or a mixture thereof.
5. The aqueous binder solution of claim 1 wherein the solvent comprises dimethylacetoacetamide.