Anti-counterfeiting composition for anti-counterfeiting chemical fiber and preparation method and use thereof

An anti-counterfeiting fiber comprising an anti-counterfeiting composition dispersed in a fiber-forming polymer, wherein the anti-counterfeiting composition comprises:

• a bio-derived oil;
• an anti-counterfeiting tracer;
• and
• a dispersant;
• wherein the anti-counterfeiting tracer is composed of barium oxide, strontium oxide, aluminum oxide and zinc oxide dispersed in the bio-derived oil, and the barium oxide, the strontium oxide, the aluminum oxide, and the zinc oxide in the anti-counterfeiting composition is controlled to a fixed feeding mass ratio which determines an encrypted sequence, a measured mass ratio of the barium oxide, the strontium oxide, the aluminum oxide, and the zinc oxide obtained after the anti-counterfeiting fiber is dissolved is the same as the fixed feeding mass ratio or has a small difference value relative to the fixed feeding mass ratio due to experimental error or loss in preparation process;
• wherein, in percent by mass, a sum of the barium element, the strontium element, the aluminum element, and the zinc element accounts for 5-50% of the anti-counterfeiting composition.