Corrosion resistant compositions and methods

A method manufacturing corrosion-resistant coating composition having a paint or a lacquer and at least 0.1% particles of a bi-axially oriented metalized polymer film, the film not being soluble in a solvent or a dispersion medium of the paint or the lacquer, the method comprising:

• bi-axially orienting a polymer film to obtain a bi-axially oriented polymeric film having thickness of at least 1μ followed by a vacuum metalizing to obtain a bi-axially oriented metalized polymer film;
• shredding the bi-axially oriented metalized polymer film to form the particles to at least 1×1 mm;
• selecting a solvent as system or a dispersion medium of paint in which the particles of the polymer film is not substantially soluble;
• preparing a paint or a coating composition by using selected solvent;
• and
• dispersing the shredded particles of oriented metalized polymer film in the paint as a primer, an under coat, or a top coat.

A coated substrate comprising:

• the substrate;
• a paint or a lacquer;
• and
• at least 0.1% particles of a bi-axially oriented metalized polymer film, wherein the film is not soluble in a solvent or a dispersion medium of the paint or the lacquer, wherein the substrate has corrosion resistance of at least 500 hours by the ASTM B 117 salt spray test.