The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 1994
Filed:
Jan. 23, 1992
Applicant:
Inventors:
Assignee:
Nihon Parkerizing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B05D / ;
U.S. Cl.
CPC ...
428623 ; 4284231 ; 428457 ; 428626 ; 427327 ; 427387 ; 4273881 ; 427409 ; 4274195 ; 148251 ; 148264 ;
Abstract
A film forming process which imparts excellent formability, corrosion resistance and paintability to the surface of aluminum or aluminum alloy plates or aluminum-plated sheet steel. A process for forming composite film on the surface of aluminum or aluminum alloy plates which comprises preliminarily treating the surface with a chromating liquid to form a chromate film on the surface, and then coating on the chromate film an organic macromolecular resin composition comprising urethane resin and at least one kind of resin selected from polyester resin and epoxy resin, a wax as a lubricating additive and further a silica sol, followed by drying, to form a film layer.