Nepheline syenite (silicate, naturally occurring blend of albite, microcline and nepheline) is a feldspatic mineral mined in Canada and Norway.
Nepheline syenite can be characterised by:
- High purity
- Absence free crystalline silica (free of labelling)
- Relatively low refractive index, making it a transparent filler in various binders
- High inertness in various media
- Easy wetting
- Transparency for UV-radiation (ie. suitable for UV-curing processes).
|Refractive index||1.51 – 1.53||[-]|
Product overview Minex
[g/ 100 g]
Production location Minex
Product overview Nepheline
[g/ 100 g]
Mining locations Nepheline
Nepheline syenite will provide:
- Block resistance: the use of nepheline syenite allows faster stacking of coated substrates with the substrates sticking to each other.
- Burnish resistance: due to its hardness of 6 on Mohs scale, nepheline syenite provides good burnish resistance (low tendency to become glossy when rubbed).
- Ease of tinting: due to the combination of refractive index, brightness and color, paints including nepheline syenite will provide excellent reproducible colour results when working with tinting systems.
- Gloss control: the gloss level of an interior coating can be influenced by selecting the appropriate grade of nepheline syenite.
- Scrub resistance: due to its hardness of 6 on Mohs scale, nepheline syenite improves wet-scrub resistance of interior decorative paints.
- Stain resistance: nepheline syenite acts as a supporting mineral filler in stain resistant coatings.
Advantage over quartz and cristobalite and certain feldspar grades: nepheline syenite grades are free of labelling, and can therefore be used as an alternative when labelled grades of other mineral fillers are no longer allowed or wanted.