Long persistence luminescent painting ink

Abstract

The invention relates to a noctilucent ink, in particular a long persistence noctilucent ink comprising 4-6 pts. by wt. of noctilucent material, 1.0-1.5 pts. by wt. of alkid resin oil, 3.0-3.6 pts. by wt. quick-drying formaldehyde-phenol resin, 0.6-450 pts. by wt. of abrasive ink, wherein the auxiliary agent comprises 0.3 pts. of dispersing agent and 0.1 pts. of conventional metal drier, wherein the noctilucent material is MOnAl2O3 agitated by rare earth europium, M is one or more of Sr, Mg, Ba and Ca, n=1-3.

Description

technical field [0001] The invention relates to luminous ink, in particular to a long afterglow luminous ink. Background technique [0002] Luminous ink is a new type of safe anti-counterfeiting ink, and this technology is still in the development stage at home and abroad. It mainly plays an anti-counterfeiting role in security and anti-counterfeiting printing such as securities printing, tax invoices, invoices, and credit cards. [0003] Luminous ink can be applied to gravure printing and screen printing. At present, in the field of anti-counterfeiting self-luminous inks, fluorescent substances are mostly used in domestic optical anti-counterfeiting inks. The technology of fluorescent anti-counterfeiting inks is quite mature and has a wide range of applications. Inks made of some special fluorescent materials can emit specific colors in a specific wavelength range to achieve anti-counterfeiting, but special instruments are required for identification. At present, ultravi...

AI Technical Summary

Problems solved by technology

So to some extent, the general fluorescent anti-counterfeiting has lost its proper anti-counterfeiting function

[0004] However, inks composed of traditional luminescent materials such as zinc sulfide have many problems such as short luminous time, low brightness, and poor light resistance.

The main reason is that the light-emitting time is short, and it is difficult to realize the anti-counterfeiting function