Effect pigments for cast resins and thermoset plastics
Effect pigments can be used not only in thermoplastics, but also in cast resins and thermoset plastics. The main field of application is unsaturated polyester resins and PMMA cast resins: Unsaturated polyester resins are used in button production, and PMMA cast resins in store fixtures, or for sanitary fixtures such as bathtubs.
The same rule applies for thermoplastic and thermoset polymers when it comes to the use of effect pigments: The more transparent the material, the better the effect works. For cast resins, particular attention must be paid to the orientation of the pigments and the settling behavior.
Create liquid metal effects with Biflair®
The Biflair® product series creates lustrous liquid metal effects and is based on bismuth oxychloride (BiOCl). Its crystals are so small that the eye is unable to differentiate between the individual particles, achieving a metallic effect.
Biflair® pigments are semitransparent with a silver-white luster and good coverage, which makes them ideal for mixing with other colored pigments to produce interesting stylings. With a particle size of <15 µm and a platelet thickness of <1 µm, they promote low settling behavior, which supports the optimized effect in the cast application because the pigment will be evenly distributed in the polymer. Minimum concentration in the polymer system should not be less than 0.4%.
For processing powdery effect pigments, such as Iriodin®, Colorstream®, Xirallic®, and Miraval®, in thermoset polymers we offer a paste system: paste fluid A. By adding 30% pigment to the paste fluid, a formulation is gained that can be used in the same way as Biflair® paste. Like for the Biflair® paste, a minimum concentration of paste fluid in the polymer system should not be less than 0.4% because the paste fluid contains additives that ensure good wetting of the pigments and reduction of the settling behavior.
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