Plastics

2.5.2.1 Properties

Thermostable bismuth vanadate pigments are available today with a heat stability of 260 to 280 °C. They exhibit very good fastness to light and weathering in plas­tics for outdoor use. In weathering tests on plastics pigmented with 0.5% cad­mium yellow or 1% bismuth vanadate, the bismuth vanadate pigment was super­ior both under artificial conditions (Xenotest, 4000 h) and outdoors (5 years).

The pigments have outstanding fastness to migration in plastics, and are readily dispersible.

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