Electrodepositable Composition
AssigneeE. I. Du Pont de Nemours and Company
InventorAllisa Gam
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a coating composition that can be applied to a conductive substrate via an anodic electrodeposition process, substrates coated with the coating composition and a process for applying the coating to a substrate. The electrodepositable coating composition is an aqueous dispersion comprising of an at least partially neutralized copolymer comprising α-olefin and unsaturated carboxylic acid and a curing agent. After a layer of the coating composition has been applied to the substrate, it can be heated to cure the coating and form a crosslinked network that provides a durable chip and corrosion resistant finish.
Claims17
1-9. (canceled)
A substrate coated with a layer of an electrodepositable coating composition wherein the electrodepositable coating composition is an aqueous dispersion comprising a film forming binder wherein the film forming binder consists essentially of:
- i) an at least partially neutralized copolymer comprising α-olefin and unsaturated carboxylic acid;
- and
- ii) a curing agent,
- wherein the curing agent consists of zinc peroxide, magnesium peroxide, barium peroxide, strontium peroxide, cadmium peroxide, titanium peroxide, or a combination thereof.
A substrate coated with a dried and cured layer of an electrodepositable coating composition wherein the electrodepositable coating composition is an aqueous dispersion comprising a film forming binder wherein the film forming binder consists essentially of:
- i) an at least partially neutralized copolymer comprising α-olefin and unsaturated carboxylic acid;
- and
- ii) a curing agent,
- wherein the curing agent consists of zinc peroxide, magnesium peroxide, barium peroxide, strontium peroxide, cadmium peroxide, titanium peroxide, or a combination thereof.
12-18. (canceled)
A process of producing a layer of a coating composition on a substrate said process comprising the steps of;
- A) providing a bath of an anodic electrodepositable coating composition wherein the electrodepositable coating composition is an aqueous dispersion comprising a film forming binder wherein the film forming binder consists essentially of:
- i) an at least partially neutralized copolymer comprising α-olefin and unsaturated carboxylic acid;
- and
- ii) a curing agent,
- wherein the curing agent consists of zinc peroxide, magnesium peroxide, barium peroxide, strontium peroxide, cadmium peroxide, titanium peroxide, or a combination thereof;
- B) immersing the substrate in said anodic electrodepositable coating composition;
- C) applying a voltage between a cathode and said substrate, which serves as a anode;
- D) removing the substrate from the bath;
- and
- E) heating the applied layer of electrodeposited coating composition.
20-27. (canceled)
Dependencies are inferred from the claim text.