| abstract |
(57) [Abstract] A colored composition comprising a variable dye, an ultraviolet transorber and a molecular clathrate, wherein more than two ultraviolet transorber molecules are covalently bonded to each molecule of the molecular clathrate. Is disclosed. The combination of an ultraviolet transorber and a molecular inclusion is referred to as a functionalized molecular inclusion. The covalent attachment of the UV transorber includes the steps of providing a derivatized UV transorber having a nucleophilic group, providing a derivatized molecular inclusion having more than two leaving groups per molecule, Reacting an ultraviolet transorber with a derivatized molecular inclusion complex under conditions sufficient for each molecule of the molecular inclusion complex to have an average of more than two ultraviolet transorber molecules covalently bonded thereto. . Particularly suitable nucleophilic and leaving groups are mercapto and p-toluenesulfonyl (tosyl), respectively. |