Tech Note:
Vitrocote Technical Data Sheet
Vitrocote™ is a natural, non-reactive multi-function additive for paints and coatings. Vitrocote™ is a free-flowing powder readily dispersed and distributed using traditional equipment. Formulation cost reductions may be possible because Vitrocote™ enhances the dispersion and distribution of functional additives, fillers and pigments. Typically, Vitrocote™ does not alter the viscosity of the liquid paint or coating; however, application rates for high-solid formulation liquids and powder coatings are often greater. The additive is compatible with all paint and coating vehicles. Cured films exhibit fewer surface irregularities such as orange peel; improved dispersion and distribution of color-effect pigments; greater Distinction of Image (DOI); and improved resistance to impact, abrasion, marring, moisture and soiling. Short- and long-term weatherability of paints and coatings are improved.
Vitrocote™ is manufactured from naturally occurring amorphous silicates and aluminosilicates and is non-toxic, inert and non-flammable. Vitrocote™ is suitable for all product applications including electrical, food contact and medical devices. It is currently being used in applications such as clear interior and exterior wood finishes, automotive finishes, industrial paints and powder coatings.
CHEMICAL DESCRIPTION
Vitrocote™ is an amorphous mixture of naturally occurring silicates and aluminosilicates of sodium, potassium, calcium, magnesium and iron.
SPECIFICATIONS
APPEARANCE: Fine-grained, dry powder
COLOR: Off-White
ODOR: Odorless
MOHS HARDNESS: 5.0 – 5.5 (< titanium dioxide)
WATER SOLUBILITY: Negligible
DENSITY: Approx. 2.4 gms/cm3 (20°C)
BULK DENSITY: About 55 lbs/ft3 depending on compaction and particle size (~1.4 gm/cm3)
BOILING POINT: N/A
MELTING POINT: Approx. 1600° F
LOSS ON IGNITION: 1 – 3 %
VAPOR PRESSURE: N/A
OIL ABSORPTION: 37-42 gms/100 gms
INDEX OF REFRACTION: 1.49
PARTICLE SIZE: D99:<10 microns for Vitrocote™10 and <20 microns for Vitrocote™20 by
Laser Particle Size Analysis
COMPOSITION: > 85% amorphous silicates and aluminosilicates by
X-ray Diffraction Spectrometry
USFDA: Meets requirements for use in polymers intended for food contact
under 21 CFR 174.5(d)(1) and 21 CFR 182 Subpart C
CASRN: 1332-09-8 (CA Index Name: Pumice)
EINECS: 310-127-6 (Naturally occurring substance)