Our tarnish resistance metallic pigments provide a wonderful palette of high lustre to full-mass colour tone shades in plastic applications which include masterbatch and blown film. Applications include extrusion, injection moulding, blow moulding, rotational moulding, deep drawing, thermoforming, vac-forming and calendaring processes.

All Tarnish Resistant grades provide good heat and chemical stability, however with an ability to withstand temperatures in excess off 300º at extended dwell times, PTR grades would be our recommended choice.

PTR Tarnish Resistant grades are an enhanced development of the TR range and offer a cleaner colour, more consistent coverage and vastly improved dispersion characteristics compared to conventional, industry standard TR grades. The PTR grades are suitable for aerosol, spray and brush paint applications.

The real benefit lies in PTR's stability over lengthy dwell times when exposed to high temperatures; conventional bronze powders can oxidize fairly rapidly under similar manufacturing conditions.

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