Electrodepositable compositions
AssigneePPG Industries, Inc.
InventorsJoseph F. Bosso, Marco Wismer
Life of this patent
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Abstract
Electrodepositable coating compositions having improved appearance, detergent resistance, salt-spray resistance and other improved properties are provided by the combination of a vehicle resin which is a water-dispersible quaternary onium (e.g., ammonium, sulfonium, phosphonium) salt-containing resin in combination with either an amine-aldehyde condensation product or a methylol-phenol ether, or the combination of the two. These compositions electrodeposit on the cathode. The properties of the coatings obtained make them highly useful as industrial finishes, either as primers or as one-coat finishes.
Claims21
A coating composition electrodepositable on a cathode comprising an aqueous dispersion comprising
- a. an acid salt solubilized quaternary onium salt group containing synthetic organic resin where the onium group is selected from the group consisting of ammonium, sulfonium and phosphonium,
- b. an amine/aldehyde condensate and
- c. an unsaturated methylol phenol ether the combined weight of (b) and (c) being from about 2% to about 30% by weight of the combined weight of (a), (b) and (c), and the weight ratio of (b) to (c) being between about 5:1 and about 1:5.
A coating composition electrodepositable on a cathode comprising an aqueous dispersion comprising
- a. an acid salt solubilized quaternary onium salt group containing synthetic organic resin where the onium group is selected from the group consisting of ammonium, sulfonium and phosphonium and
- b. from about 2 to about 30% by weight based on the combined weight of (a) and (b) of an unsaturated methylol pehnol ether.
A coating composition electrodepositable on a cathode comprising an aqueous dispersion comprising
- a. an acid salt solubilized quaternary sulfonium salt group containing synthetic organic resin, and
- b. from about 2% to about 30% by weight based on the combined weight of (a) and (b) of an amine/aldehyde condensate.
A coating composition electrodepositable on a cathode comprising an aqueous dispersion comprising
- a. an acid salt solubilized quaternary phosphonium salt group containing synthetic organic resin, and
- b. from about 2% to about 30% by weight based on the combined weight of (a) and (b) of an amine/aldehyde condensate.
Dependencies are inferred from the claim text.