Simulated security thread by cellulose transparentization
AssigneeThe Standard Register Company
InventorsDavid E. Washburn, Harry A. Seifert, Watson L. Gullett, Rajendra Mehta
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Abstract
A security document is provided comprising a finished cellulosic substrate having at least one transparentized portion formed therein. The transparentized portion comprises a transparentizing composition that is applied so as to define an area of increased transparency in the substrate. The area of increased transparency includes at least one thin line and resembles a simulated security thread. The transparentizing composition can be applied to form thin lines in a variety of configurations on one or both sides of the substrate.
Claims54
A security document, comprising:
- a finished cellulosic substrate having at least one transparentized portion formed therein, wherein said substrate defines first and second major surfaces;
- said transparentized portion comprising a transparentizing composition applied to at least one of said first and second major surfaces so as to define an area of increased transparency in said substrate;
- said area of increased transparency including at least one thin line;
- and
- said area of increased transparency resembling a simulated security thread.
A security document comprising a finished cellulosic substrate having at least one transparentized portion formed therein, wherein said substrate defines first and second major surfaces, said transparentized portion comprises a transparentizing composition applied to at least one of said first and second major surfaces to define an area of increased transparency in said substrate resembling a simulated security thread, and wherein said transparentizing composition comprises at least one compound selected from compounds of the formula:
- wherein,
- R″ is any mono- or polyfunctional organic radical;
- R is H or CH3;
- R′ is H or —C(O)C(R)═CH2 with the proviso that —C(O)C(R)═CH2 occurs at least once;
- x is an integer 0-4 and indicates the number of functional groups on R″ which are reactive with ethylene or propylene oxide;
- z is an integer 1-4 and may vary independently of x and n;
- n is an integer 1-20 and is independent of x and z;
- and
- wherein if any of R, R′, or R″ are greater than one, their identities and the number of each may be the same or different;
- or
- wherein,
- R″ is any mono- or polyfunctional organic radical;
- R is H or CH3;
- R′ is H or —C(O)C(R)═CH2 with the proviso that —C(O)C(R)═CH2 occurs at least once;
- x is an integer 0-4 and indicates the number of functional groups on R″ which are reactive with ethylene or propylene oxide;
- z is an integer 1-4 and may vary independently of x and n;
- n is an integer 1-20 and is independent of x and z;
- and
- R′″ is H or a group of the formula:
- wherein R, R′, and n are as defined as above, wherein if any of R, R′, R″ or R′″ are greater than one, their identities and the number of each may be the same or different.
A security document comprising a finished cellulosic substrate having at least one transparentized portion formed therein, wherein said substrate defines first and second major surfaces, said transparentized portion comprises a transparentizing composition applied to at least one of said first and second major surfaces to define an area of increased transparency in said substrate resembling a simulated security thread, and wherein said transparentizing composition comprises:
- i) a cationic catalyzable constituent selected from 1) a vinyl ether, 2) a polyepoxide, 3) a mixture of vinyl ethers, 4) a mixture of polyepoxides, or 5) a mixture of at least one of a vinyl ether and at least one of a polyepoxide;
- ii) a free radical catalyzable constituent selected from at least one compound of the Formula:
- wherein,
- R″ is any mono- or polyfunctional organic radical;
- R is H or CH3;
- R′ is H or —C(O)C(R)═CH2 with the proviso that —C(O)C(R)═CH2 occurs at least once;
- x is an integer 0-4 and indicates the number of functional groups on R″ which are reactive with ethylene or propylene oxide;
- z is an integer 1-4 and may vary independently of x and n;
- n is an integer 0-20 and is independent of x and z;
- and
- wherein if any of R, R′, or R″ are greater than one, their identities and the number of each may be the same or different;
- and
- iii) a catalyst constituent selected from 1) a free radical catalyst, 2) a mixture of free radical catalysts, 3) a living cationic catalyst, 4) a mixture of living cationic, catalysts, or 5) mixtures of at least one of a free radical catalyst and at least one of a living cationic catalyst.
A security document comprising a finished cellulosic substrate having at least one transparentized portion formed therein, wherein said substrate defines first and second major surfaces, said transparentized portion comprises a transparentizing composition applied to at least one of said first and second major surfaces to define an area of increased transparency in said substrate resembling a simulated security thread, and wherein said transparentizing composition comprises at least one monomer selected from the group consisting of acrylic esters of polyhydric alcohols, methacrylic esters of polyhydric alcohols, and vinyl ethers.
A security document comprising a finished cellulosic substrate having at least one transparentized portion formed therein, wherein said substrate defines first and second major surfaces, said transparentized portion comprises a transparentizing composition applied to at least one of said first and second major surfaces to define an area of increased transparency in said substrate resembling a simulated security thread, and wherein said transparentizing composition comprises a polymer consisting of aliphatic monomers selected from the group consisting of acrylic esters of polyhydric alcohols, methacrylic esters of polyhydric alcohols, and vinyl ethers.
Dependencies are inferred from the claim text.