Claims
- 1. A transparent, paramagnetic label for an article, the label being essentially free of optical detection by a person with 20/20 vision from a distance of 3 feet or more comprising composition comprising polymer complexed with a sufficient amount of one or more rare earth ions selected from the group consisting of elements 64-69 to provide a polymer composition magnetic mass susceptibility of greater than 20×10−6 emu/g measured at 298° K.
- 2. A transparent, paramagnetic label for an article, the label being essentially free of optical detection by a person with 20/20 vision from a distance of 3 feet or more comprising composition comprising polymer complexed with one or more rare earth ions selected from the group consisting of elements 64-69, the amount of rare earth ions being greater than 9 weight percent based on the total weight of the transparent, paramagnetic polymer.
- 3. A transparent, paramagnetic label for an article, the label being essentially free of optical detection by a person with 20/20 vision from a distance of 3 feet or more comprising composition comprising polymer complexed with one or more rare earth ions selected from the group consisting of elements 66-67, the amount of rare earth ions being at least 5 weight percent based on the total weight of the transparent, paramagnetic polymer.
- 4. The transparent, paramagnetic label for an article of claim 1, 2, or 3 wherein the transparency is such that it is possible to transmit at least 55% of the incident light/radiation through a ⅛ inch thick test piece of the label material for greater than 50% of the wavelengths in the range of 400 to 1800 nanometers (nm).
- 5. A method of labeling an article comprising the steps of
(a) applying a label composition comprising a polymerization initiator and a monomer composition comprising polymerizable monomers and source of one or more rare earth ions selected from the group consisting of elements 64-69 to the article; and then (b) curing the label composition to form a transparent, paramagnetic polymer label; wherein resulting transparent, paramagnetic polymer label comprises polymer complexed with a sufficient amount of one or more rare earth ions selected from the group consisting of elements 64-69 to provide a polymer composition magnetic mass susceptibility of greater than 20×10−6 emu/g measured at 298° K.
- 6. A method of labeling an article comprising the steps of
(a) applying a label composition comprising a polymerization initiator and a monomer composition comprising polymerizable monomers and source of one or more rare earth ions selected from the group consisting of elements 64-69 to the article; and then (b) curing the label composition to form a transparent, paramagnetic polymer label; wherein resulting transparent, paramagnetic polymer label comprises polymer complexed with the amount of one or more rare earth ions selected from the group consisting of elements 64-69 based on the total weight of the transparent, paramagnetic polymer label being greater than 9 weight percent.
- 7. A method of labeling an article comprising the steps of
(c) applying a label composition comprising a polymerization initiator and a monomer composition comprising polymerizable monomers and source of one or more rare earth ions selected from the group consisting of elements 64-69 to the article; and then (d) curing the label composition to form a transparent, paramagnetic polymer label; wherein resulting transparent, paramagnetic polymer label comprises polymer complexed with the amount of one or more rare earth ions selected from the group consisting of elements 66-67 based on the total weight of the transparent, paramagnetic polymer label being greater than 5 weight percent.
Parent Case Info
[0001] This application claims the benefit of U.S. Provisional Application No. 60/261,965, filed Jan. 16, 2001, which is incorporated by reference herein for all purposes as if fully set forth.
Provisional Applications (1)
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Number |
Date |
Country |
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60261965 |
Jan 2001 |
US |