About heterocyclic ultraviolet phosphors weather resistance

Many customers ask which kind of ultraviolet phosphor powder is the best and most stable. In fact, in terms of the existing known synthesis technology, heterocyclic ultraviolet phosphor is the most stable, which is a rigid structure connected by a benzene ring. Its weather resistance is the best, water resistance: level 5; Ink resistance: 5 grade; Acid resistance: 5; Alkaline resistance: level 4; Paraffin resistance: grade 5; Light resistance: ≥ grade 4 (95 hours in the sun)

Generally used in banknotes of various countries or in circulation for a long time to prevent counterfeiting, we supply heterocyclic compounds such as ultraviolet phosphor: fluorescent yellow green, fluorescent grass green, fluorescent yellow, fluorescent blue.

Ultraviolet fluorescence security ink is divided into long and short wave fluorescence. Long – wave fluorescent ink has two kinds of invisible colorless or colored. The former is usually white or colorless, printed on paper or plastic film does not show color, under ultraviolet light or money detector under different varieties will show different colors, red, yellow, green, blue and other different kinds. Applicable TO securities, certificates, official documents and all kinds of high-grade tobacco, alcohol, medicine, cosmetics and other brand-name goods packaging anti-counterfeiting. The colored fluorescent security ink in the detector or ultraviolet light shows the same color as the original color of the ink, mainly used for bills or other anti-counterfeiting needs of printing, there are different colors for users to choose. Shortwave security ink, which fluoresce under a shortwave light. This technology has been used on the two-dimensional code on the back of bank checks, and can also be used on all kinds of bills and signs. Fluorescent security ink is divided into gravure printing, screen printing, offset printing, UV offset printing, UV relief printing, flexographic printing, suitable for different printing needs.