Abstract: There is provided a security document (10) bearing an image (16) associated with an active substance, wherein the active substance is responsive to tactile pressure (18) in the range 0.01-1O MPa to alter the appearance of the image particularly when viewed under ultraviolet radiation (14). The active substance can be incorporated in an ink forming at least part of the image, in one or more layers associated with or beneath the image, or incorporated within a polymer, or adhesive associated with the image. The active substance comprises at least one of the following: organic or inorganic dye or dyes, chromophore(s), multi-chromophore(s), lumiphore(s). A layer incorporates a UV filter capable of being rendered inoperative in response to pressure, such that tactile pressure thins this layer so that the UV are no longer blocked and reach the lumiphore layer.

Abstract: The present invention relates to compositions comprising photosenitizer that can be used to provide lipophilic fluids with bleaching capabilities, lipophilic fluid cleaning compositions having bleaching capabilities and processes of making and using same. Such compositions provide the cleaning benefits of typical lipophilic solvents and additional cleaning benefits that include bleaching.

Abstract: The present invention relates to compositions comprising a photosensitizer that can be used to provide aqueous fluids with bleaching capabilities, aqueous fluid photobleaching compositions having bleaching capabilities and processes of making and using same. Such compositions can provide bleaching and/or cleaning benefits that are similar to or better than hydrogen peroxide bleaching systems.

Abstract: The present invention relates to compositions comprising photosenitizer that can be used to provide lipophilic fluids with bleaching capabilities, lipophilic fluid cleaning compositions having bleaching capabilities and processes of making and using same. Such compositions provide the cleaning benefits of typical lipophilic solvents and additional cleaning benefits that include bleaching.

Abstract: The invention relates to photochemical singlet oxygen generators useful as bleaching agents or anti-microbial agents in laundry detergent compositions or in hard surface cleaning compositions. The singlet oxygen generators described herein have enhanced singlet oxygen generation due to aromatic moieties teed to the molecules, said aromatic moieties absorbing ultra violet radiation then re-emitting the radiation as fluorescence at a wavelength absorbable by the singlet oxygen producing photosensitizer unit. The increase in the number of photons having an absorbable wavelength provides an increase in the production of singlet oxygen.

Abstract: Disclosed are photochemical super oxide generators useful as photobleaches for laundry detergent compositions and as photobleaches or photodisinfectants for use in hard surface cleaning compositions. The compounds described herein comprise an amino-containing electron transfer moiety bonded to the photosensitizing unit wherein the amino-containing moiety is capable of transferring an electron to the photochemically excited &pgr; electron cloud of the photosensitizer unit thereby enabling superoxide formation.

Abstract: The invention relates to the field of radiation sensitizers and the use of texaphyrins for radiation sensitization and other conditions for which X-ray radiation has proven to be therapeutic.

Abstract: The present invention includes a method to produce singlet oxygen from molecular oxygen generated by reaction with a sapphyrin compound excited at an absorbing wavelength to form a triplet species. Specifically, the sapphyrin compound is an alkylated sapphyrin, most preferably diprotonated 3,8,12,13,17,22-hexaethyl-2,7,18,23-tetramethylsapphyrin. Generation of the triplet species may be accomplished in an organic solvent, of which the most preferable solvents are chloroform, methanol or acetonitrile.Also encompassed within the present invention is a method to selectively produce singlet oxygen in an aqueous environment. A sapphyrin compound is incorporated within a membranous vesicle, the vesicle is illuminated with exciting light and the resultant excited triplet state sapphyrin compound reacts with molecular oxygen to produce singlet oxygen. Singlet oxygen was not generated external to the vesicle where the sapphyrin compound is present in an aqueous medium.

Abstract: The present invention demonstrates a method of photodynamic inactivation of viruses having a membranous envelope, such as Herpes simplex type 1 and Human immunodeficiency type 1 viruses. The method uses substituted sapphyrin compounds to effect viral deactivation during radiation with light at or near the absorption wavelength of the sapphyrin compound. A highly reactive species selectively toxic to infectious agents is produced.One particular sapphyrin compound useful for the practice of the invention is 8,17-bis(carboxymethyl)-3,12,13,22-tetraethyl-2,7,18,23-tetramethylsapphyr in (Sapphyrin 2). The most preferred sapphyrin sapphyrin compound for the practice of the invention is 3,8,12,13,17,22-hexaethyl-2,7,18,23-tetramethylsapphyrin (Sapphyrin 1).The method is particularly suitable for inactivation of viruses in blood and blood products.

Abstract: A photochemical process in which visible light is used to irradiate a solution comprising water, a manganese (II) or manganese (III) complex of formula MnL wherein L is a phthalocyanine ligand, a 5, 10, 15, 20--tetraphenylporphyrin ligand or a 5, 10, 15, 20--tetrapyridylporphyrin ligand, and a suitable electron acceptor. The process results in the oxidation of water into oxygen and the reduction of the electron acceptor. The reduced electron acceptor may be used as, or converted to, a chemical fuel.