Surface-treating agent comprising crystalline layered inorganic compound dispersed in nanosheet form

Abstract

Disclosed is a surface-treating agent comprising a crystalline layered inorganic compound formed with an organic amine or an organic ammonium into a nanosheet, wherein the organic amine or organic ammonium is a polyfucntional organic amine or polyfunctional organic ammonium. The surface-treating agent is a nanosheet-dispersed sol-type non-chromate surface-treating agent which shows excellent corrosion resistance and coating-adhesiveness at a processed part and can form a stiff film even used in the manufacture of a precoated metal plate which is applicable to an electric appliance, an automotive product or the like which is required to have a strictly machined shape.

Description

technical field

[0001] The present invention relates to a surface treatment agent capable of forming a surface film, in which nanosheets of a crystalline layered inorganic compound are dispersed, and which is excellent in corrosion resistance and paint adhesion. More specifically, it relates to, for example, a chromium-free surface treatment agent used as a temporary antirust or primer for metal materials, a surface treatment method using the surface treatment agent, and further relates to a metal material treated with the surface treatment agent and made from metal. Background technique

[0002] At present, in order to produce materials with excellent structure and function, it is vigorously promoted to form nanostructures on the surface interface of materials. Under such circumstances, it has been proposed to obtain a nanosheet dispersion sol by subjecting a layered crystal metal compound to a predetermined treatment to disperse fine crystal flakes of the layered crystal...

Images