| abstract |
The present invention relates to aqueous dispersions of binders for cationic electrodeposition coatings, containing amine-modified hydroxyfunctional epoxy resins as a binder as well as at least one fully blocked polyisocyanate, which is at least partially blocked with 2,2-dimethyl-1,3-dioxolane-4-methanol, as a cross-linking agent and use of corresponding cationic electrodeposition coatings for the production of coatings and the use of cross-linking agents on the basis of polyisocyanates blocked with 2,2-dimethyl-1,3-dioxolane-4-methanol in aqueous dispersions of binders. |