Security composition and use thereof
A security product is disclosed herein comprising a pouch containing a composition, the composition including a mixture of a liquid, a polymer, a light-emitting material and a plurality of marker materials. The pouch may form part of a blocking device blocking an access passage that gives access to a restricted area, such as a manhole, and the composition may be transferred onto an object or individual coming into contact with the composition if an attempt is made to break through the pouch.
1. A security product comprising a pouch containing a composition, the composition comprising a mixture of a liquid, a polymer, a light-emitting material and a plurality of marker materials, wherein the polymer is an anionic acrylate copolymer.
2. A security product according to claim 1 wherein the composition is a gel.
3. A security product according to claim 1 wherein the polymer forms 0.1-80 weight % of the composition.
4. A security product according to claim 1 wherein the marker materials are metal compounds.
5. A security product according to claim 4 wherein the metal compounds are selected from alkaline earth metals, d-block metals, lanthanides and p-block metals.
6. A security product according to claim 4 wherein the marker materials include at least one lanthanide compound.
7. A security product according to claim 1 wherein each marker is provided in a concentration in the range of 1 ppb-150,000 ppm.
8. A security product according to claim 1 wherein the composition further comprises an adhesive.
9. A security product according to claim 8 wherein the adhesive is a polymer is selected from polyacrylates, polyacetates and polystyrenes.
10. A security product according to claim 1 wherein the pouch is a flexible material.
11. A security product according to claim 1 wherein the liquid is water.
12. A security product according to claim 1 wherein the light-emitting material emits visible light upon excitation.
13. A method of forming a plurality of gel batches, the method comprising the step of mixing a gel-forming polymer and a solution comprising a plurality of marker materials wherein the composition of the marker materials in each of the gel batches is different, wherein the polymer is an anionic acrylate copolymer.