Secueity thread for the forgery-proof making of objects

Abstract

The invention relates to a security thread for the forgery-proof marking of objects, comprising at least one fibre (F) with nucleic acid molecules (N) bonded with the one end thereof to a fibre suface and the fibre (F). The other end of the nucleic acid molecule (N) is free such that complementary nucleic acid molecules (N′) may bind to the nucleic acid molecule (N).

1 . A security thread for the forgery-proof marking of objects having at least one fiber (F), where one end of one or more nucleic acid molecules (N) are linked to a fiber surface of the fibers (F), and where the other end of the nucleic acid molecules (N) is free, so that complementary nucleic acid molecules (N′) are able to undergo linkage to the nucleic acid molecules (N).  
     
     
         2 . The security thread as claimed in  claim 1 , where the fiber (F) is formed from a natural polymer.  
     
     
         3 . The security thread as claimed in  claim 2 , where the natural polymer is selected from the following group: cellulose, chitin, silk, wool, cotton, hemp, flax or derivatives of these polymers.  
     
     
         4 . The security thread as claimed in  claim 1 , where the fiber (F) is formed from a synthetic polymer.  
     
     
         5 . The security thread as claimed in  claim 4 , where the synthetic polymer is selected from the following group: polyamide, polyacrylonitrile, nylon, polypropylene, polyvinylidene fluoride, polycarbonate, polystyrene or derivatives of these polymers.  
     
     
         6 . The security thread as claimed in  claim 1 , where the nucleic acid molecule (N) is linked via a covalent or noncovalent linkage to the fiber surface.  
     
     
         7 . The security thread as claimed in  claim 6 , where the nucleic acid molecule (N) is linked via a biotin/streptavidin linkage, a carboxy, phosphate, amino, thiol, psoralen, cholesteryl or digoxigenine group to the fiber surface.  
     
     
         8 . The security thread as claimed in  claim 1 , where the nucleic acid molecule (N) is linked via an intermediate layer to the fiber surface.  
     
     
         9 . The security thread as claimed in  claim 8 , where the intermediate layer is a functionalized silane layer.  
     
     
         10 . The security thread as claimed in  claim 1 , where different nucleic acid molecules (N, N1, N2) are linked to the fiber surface.  
     
     
         11 . The security thread as claimed in  claim 10 , where the different nucleic acid molecules (N) are linked on defined zones of the fiber surface.  
     
     
         12 . The security thread as claimed in  claim 1 , where the nucleic acid molecule (N) is produced by chemical synthesis directly on the fiber.  
     
     
         13 . The security thread as claimed in  claim 1 , where the diameter of the fiber (F) is from 100 nm to 100 μm.  
     
     
         14 . The security thread as claimed in  claim 1 , further comprising at least one second fiber.  
     
     
         15 . The security thread as claimed in  claim 14 , where the second fiber consists of another material.  
     
     
         16 . The security thread as claimed in  claim 1 , where the diameter of the security thread is from 1 μm to 1 mm.  
     
     
         17 . A textile having at least one security thread (Fd) as claimed in  claim 1 .  
     
     
         18 . A textile as claimed in  claim 17 , which comprises security threads (Fd) modified with different nucleic acid molecules.  
     
     
         19 . The textile as claimed in  claim 17 , where nucleic acid-modified security threads (Fd) form a pattern which can be detected by means of the complementary nucleic acid molecules (N′).  
     
     
         20 . A label where the label comprises at least one security thread (Fd) as claimed in  claim 1 .  
     
     
         21 . The label as claimed in  claim 20 , where the security threads (Fd) are modified with different nucleic acid molecules.  
     
     
         22 . The label as claimed in  claim 21 , where a nucleic acid microarrangement in the form of a matrix is formed from a plurality of security threads.  
     
     
         23 . The label as claimed in  claim 22 , where the matrix is produced by techniques of textile processing of the security threads (Fd).  
     
     
         24 . A forgery-proof marking, where at least one security thread (Fd) as claimed in  claim 1  is applied to a basic article ( 2 ).  
     
     
         25 . The forgery-proof marking as claimed in  claim 24 , where the basic article ( 2 ) is produced from a fabric, paper or flow agent which makes transport of liquid to the security thread (Fd) possible.  
     
     
         26 . The forgery-proof marking as claimed in  claim 25 , where the basic article ( 2 ) has an absorbent pad ( 3 ).  
     
     
         27 . The forgery-proof marking as claimed in  claim 24 , where a plurality of security threads (Fd) are arranged in parallel.  
     
     
         28 . The forgery-proof marking as claimed in  claim 24 , where the covering ( 4 ) is applied to the basic article ( 2 ).  
     
     
         29 . The forgery-proof marking as claimed in  claim 28 , where the covering ( 4 ) has a first orifice ( 4   a ) for application of detection liquid.  
     
     
         30 . The forgery-proof marking as claimed in  claim 29 , where the covering ( 4 ) has a second orifice ( 4   b ) for observing the security thread (Fd).  
     
     
         31 . A method for identifying a forgery proof marking on an object having the following steps: 
 a) providing an object comprising at least one security thread (Fd) as claimed in  claim 1 ,    b) bringing the security thread (Fd) into contact with an indicator comprising the complementary nucleic acid molecules (N′) and    c) detecting the specific linkage of the complementary nucleic acid molecules (N′) to the nucleic acid molecules (N) on the object.    
     
     
         32 . (canceled)  
     
     
         33 . The method as claimed in  claim 31 , where steps c and d are carried out in less than 5 minutes.  
     
     
         34 . The method as claimed in  claim 31 , where only a solution or suspension is used for carrying out steps c and d.  
     
     
         35 . The method as claimed in  claim 31 , where steps c and d are carried out without a washing step.  
     
     
         36 . The method as claimed in  claim 31 , where detection is carried out by means of specific hybridization and by a change in optical properties brought about as a result of the hybridization.  
     
     
         37 . (canceled)  
     
     
         38 . The method as claimed in  claim 31 , where the detection is carried out by means of an enzymatic reaction and by a change in optical properties brought about as a result of the enzymatic reaction.  
     
     
         39 . The method as claimed in  claim 31 , where the detection is carried out by means of laminar flow.  
     
     
         40 . The method as claimed in  claim 31 , where the complementary nucleic acid molecules (N′) are linked to micro- or nanoparticles.  
     
     
         41 . The method as claimed in  claim 31 , where a pattern formed by at least one security thread (Fd) is identified in the detection.  
     
     
         42 . The method as claimed in  claim 41 , where the pattern is formed by a plurality of security threads (Fd) which are provided with different nucleic acid molecules (N, N1, N2).  
     
     
         43 . The method as claimed in  claim 41 , where the pattern is formed by formed-loop knitting, weaving, drawn-loop knitting, crocheting, knotting, sewing or embroidery.  
     
     
         44 . The security thread as claimed in  claim 8 , where the intermediate layer contains streptavidin.  
     
     
         45 . The forgery proof marking as claimed in  claim 28 , where the covering ( 4 ) is plastic.  
     
     
         46 . The method as claimed in  claim 36 , where the optical properties are fluorescence or a color reaction.  
     
     
         47 . The method as claimed in  claim 46 , wherein the detection is carried out by means of a molecular beacon.  
     
     
         48 . A method for the forgery proof marking of an object having the following steps: 
 a) providing the object, and    b) contacting the object with the security thread as claimed in  claim 1.