Transparent paramagnetic polymer

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g(57) Abstract : This invention provides a transparent, paramagnetic polymer composition in which a polymer is complexed with sufficient rare earth ions, particularly ions selected from ions in the group of elements 64 - 69, to provide a polymer with a magnetic mass susceptibility greater than 20 x 10_s emu/g measured at 298 °K. This invention provides optically responsive devices that employ hese transparent, paramagnetic polymers as an element that is responsive to a magnetic field and a means for providing magnetic field. This invention provides transparent labels or markings employing these transparent, paramagnetic polymers. Date of publication of the international search report : 17 April 2003 For two-letter codes and other abbreviations, refer to ante Notes on Codes andAbbreviations" appearing ning of each regular issue of the PCT Gazette.