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Phosphorescent Technologies
ALKALINE EARTH METAL ALUMINATE
- May be improperly referred to as Strontium Aluminate, Silicate Aluminate, or Alkaline Earth Aluminate
- Technology originating in 1992, provides an extreme variety of brightness' and economic levels in glow pigment. At the high end, offers the brightest and longest lasting phosphorescent pigments
- Depending on the individual product, 'earth metals' can include Strontium, Magnesium, Calcium, and Barium Silicon and Titanium may also be present. It is typically doped with Europium
- Glow Colors range in the spectrum from green-yellow to purple-blue
- Raw pigment is whitish in color, and translucent in medium
- Acid decomposes this pigment
- Water will slowly dissolve it. Therefore, water-based mediums must be mixed, applied, and encouraged to dry quickly.
Glow Inc. product lines: Ultra and High
ALKALINE EARTH ALUMINATE W/ FLUORESCENT PIGMENT
- Products are created by taking Alkaline Earth Metal Aluminate pigments and adding an opaque fluorescent pigment to provide visibility in a lit room
- As a side effect, the fluorescent pigments also tint the glow which can produce glow colors such as orange.
Glow Inc. product line: Daytime
COATED ALKALINE EARTH ALUMINATE
- This technology is new for 2004; products are created by coating Alkaline Earth Metal Aluminate pigments with a sealer to protect them from water
- Because they are no longer water soluble, they can be used in water-based mediums
Glow Inc. product line: Coated
ALKALINE EARTH SILICATE
- Another fairly new pigment technology that produces a very pure sky blue glow color not available from alkaline earth aluminates
- Pigments are not water soluble and are stable in most acids; thus the medium choices are almost endless
Glow Inc. product line: Pure
ZINC SULFIDE (GREEN FORMULA)
- Originated in the 1970's, this was the first phosphorescent pigment
- It is also the pigment in 99% of all glow in the dark items currently available
- It is not very bright and it only glows for a short period of time
- The reason it is used so much in manufacturing is that it is relatively cheap; also FDA approved for limited use cosmetics
- Raw pigment has a strong sulfuric odor, but it is usually masked when mixed into the medium
- Zinc pigments are slightly soluble in water; solubility level is so small that they can be stored as a water-based paint for years
Glow Inc product line: (currently discontinued)
ZINC SULFIDE (RED & ORANGE FORMULA)
- In 2000, they manipulated Zinc Sulfide to produce glow colors in the color spectrum from red to orange
- Colors are deep and pure; brightness has been improved
- Raw pigment has a strong sulfuric odor, but it is usually masked when mixed into the medium
- Zinc pigments are slightly soluble in water; the solubility level is so small that they can be stored as a water-based paint for years
Glow Inc product line: Zinc