Back to results
US 4,054,467 AGranted
Method of coating aluminum substrates
AssigneeMinnesota Mining and Manufacturing Company
InventorValdis Mikelsons
Life of this patent
Estimating the term…
Abstract
Aluminum substrates are provided having a coating of particulate material bound thereto by means of an in situ formed binder of aluminum hydroxyoxide. The coated aluminum constructions have utility in imaging and reproduction processes (e.g., as printing plates, as electrographic elements, etc.), as magnetic recording surfaces, controlled roughness surfaces, decorative panels, protective surfaces, etc.
Claims9
A process for preparing a coated aluminum substrate comprising:
- a. applying particulate material to an aluminum substrate, said particulate material having an average particle size of about 0.05 to 3000 microns, a melting point above about 150.degree. C., and a water solubility of less than about 0.1 part per 100 parts of water at 100.degree. C., and
- b. exposing the aluminum substrate bearing the particulate material to an oxidizing environment containing water for a time, in an amount, and at a temperature sufficient to provide in situ formation of aluminum hydroxyoxide whereby the particulate material is firmly bound to the aluminum substrate.
A process comprising:
- a. applying a mixture comprising particulate material disposed in liquid vehicle to an aluminum substrate, said particulate material having an average particle size of about 0.05 to 3000 microns, a melting point above about 150.degree. C., and a water solubility of less than about 0.1 part per 100 parts of water at 100.degree. C.,
- b. removing at least a substantial portion of said liquid vehicle, and
- c. exposing said aluminum substrate bearing said particulate material to an oxidizing environment containing water for a time, in an amount, and at a temperature sufficient to provide in situ formation of aluminum hydroxyoxide whereby said particulate material is firmly bound to said aluminum substrate.
Dependencies are inferred from the claim text.