Abstract: There are provided compounds comprising optionally substituted (FORMULA I) fused with one or two optionally substituted (FORMULA II), wherein A and E each independently represent —CH2—, —NH—, -0-, —S—, or —C(?O)— and B represents a bond, —CH2—, —NH—, -0-, —S—, or —C(?O)—, said compound having directly or indirectly attached thereto at least one acyl and/or oxime ester group. Such compounds are useful inter alias as photoinitiators.

Abstract: There are provided compounds comprising optionally substituted (FORMULA I) fused with one or two optionally substituted (FORMULA II), wherein A and E each independently represent —CH2—, —NH—, —O—, —S—, or —C(?O)— and B represents a bond, —CH2—, —NH—, —O—, —S—, or —C(?O)—, said compound having directly or indirectly attached thereto at least one acyl and/or oxime ester group. Such compounds are useful inter alias as photoinitiators.

Abstract: There are provided compounds comprising optionally substituted (FORMULA I) fused with one or two optionally substituted (FORMULA II), wherein A and E each independently represent —CH2—, —NH—, —O—, —S—, or —C(?O)— and B represents a bond, —CH2—, —NH—, —O—, —S—, or —C(?O)—, said compound having directly or indirectly attached thereto at least one acyl and/or oxime ester group. Such compounds are useful inter alias as photoinitiators.

Abstract: A thermal lithographic printing plate overcoat composition comprising (a) a water-soluble polymeric dye having an absorption band between about 300 and about 600 nm; and (b) micro-particles or nano-particles is provided. A negative-working thermal lithographic printing plate comprising (a) a hydrophilic substrate; (b) a near infrared imaging layer disposed on the hydrophilic substrate; and (c) an overcoat layer disposed on the imaging layer, said overcoat layer comprising a water-soluble polymeric dye having an absorption band between about 300 and about 600 nm; and micro-particles or nano-particles is also provided. Finally, a water-soluble polymeric dye having an absorption band between about 300 and about 600 nm is provided.

Abstract: This invention relates to iodonium salts, acetal copolymers and polymer binders comprising functional groups capable of undergoing cationic or radical polymerization, their method of preparation and their use in the preparation of coating solutions and coatings. This invention also relates to coatings containing the iodonium salts, acetal copolymers and/or polymer binders and to negative working lithographic printing plates comprising these coatings.

Abstract: This invention relates to iodonium salts, acetal copolymers and polymer binders comprising functional groups capable of undergoing cationic or radical polymerization, their method of preparation and their use in the preparation of coating solutions and coatings. This invention also relates to coatings containing the iodonium salts, acetal copolymers and/or polymer binders and to negative working lithographic printing plates comprising these coatings.

Abstract: This invention relates to iodonium salts, acetal copolymers and polymer binders comprising functional groups capable of undergoing cationic or radical polymerization, their method of preparation and their use in the preparation of coating solutions and coatings. This invention also relates to coatings containing the iodonium salts, acetal copolymers and/or polymer binders and to negative working lithographic printing plates comprising these coatings.

Abstract: This invention relates to iodonium salts, acetal copolymers and polymer binders comprising functional groups capable of undergoing cationic or radical polymerization, their method of preparation and their use in the preparation of coating solutions and coatings. This invention also relates to coatings containing the iodonium salts, acetal copolymers and/or polymer binders and to negative working lithographic printing plates comprising these coatings.

Abstract: There is provided polymeric particles having a particle size between about 60 nm and about 1000 nm and comprising a polymer, the polymer comprising a hydrophobic backbone, a near infrared absorbing segment having attached thereto a near infrared absorbing chromophore having an absorption peak between about 700 nm and about 1100 nm; and a near infrared transparent segment. Method of manufacture these particles are also provided. A coating composition comprising the above-polymeric particles and a reactive iodonium oligomer is also provided. Finally, a negative-working lithographic offset printing plate comprising a substrate; a hydrophilic under layer; and a laser imageable upper layer, wherein the laser imageable upper layer comprises the above polymeric particle is also provided.

Abstract: Described herein are novel thermally reactive near-infrared absorbing acetal copolymers that undergo chemical and physical changes upon exposure to near-infrared radiation. Also described are the methods of preparation of the novel acetal copolymers starting either with vinyl-alcohol polymers or with acetal copolymers. Also described are the methods of use of the new near-infrared absorbing acetal copolymers in coatings used in lithographic offset printing plates that can be directly imaged with near-infrared laser imaging devices in computer-to-plate and digital offset printing technologies. The novel acetal copolymers are also useful in photoresist applications, rapid prototyping of printed circuit boards and chemical sensor development.

Abstract: A method, apparatus and system for analysing and authenticating a luminescent tag are provided wherein a luminescence is triggered in the tag and relative light intensities emitted thereby measured within at least two luminescence bands. The measured intensities are compared with at least one reference tag representative of relative intensities emitted by an authentic tag to determine whether the luminescent tag corresponds with any of the at least one reference tag. If the measured intensities match the representative intensities, the luminescent tag is authenticated. A computer program to be implemented by the apparatus and system is also disclosed. Further, a method and system for verifying the authenticity of one or plural objects are disclosed, wherein each of the objects is to be associated with a respective tag. The respective tags are coded to emit light, when triggered, within at least two luminescence bands at respective predetermined relative light intensities.

Abstract: Described herein are a method for recording luminescent compositions, comprising a) providing a luminescent composition which comprises at least a first and second luminescent compound, wherein the first luminescent compound is a donor compound having a peak luminescent emission spectrum at a given wavelength, wherein the second luminescent compound is an acceptor compound having a peak absorption spectrum at a longer wavelength than the given wavelength, and wherein the emission spectrum of the donor compound at least partially overlaps the absorption spectrum of the acceptor compound; b) combining the composition with a substrate, so that at least a portion of the composition is available for exposure to a photon source; and c) embedding information at predetermined sites in the combined composition by localized exposure to a photon source, the embedding resulting in an information pattern when exposed to a luminescence deciphering device, and uses of said information pattern.

Abstract: Provided herein is an inorganic-organic hybrid conjugated polymer having opto-electronic function and a process to make the same. The disclosed polymer contains inorganic or organic bulky groups in the polymer backbone or as pedant groups and has a general formula: wherein: A is a bulk group, comprising at least one silsesquioxane, serving as a positional anchor for the polymer. S serving as a spacer includes alkyl, cycyloalkyl group of from 1 to 30 carbon atoms, or aryl or substituted aryl of from 6 to 50 carbon atoms, or herteroaryl or substituted heteroaryl of from 4 to 50 carbons. CP represents any conjugated polymer segment at least one portion thereof comprising an opto-electronic function, for example, polyacetylenes, polyphenylenes, polyphenylenevinylenes, polythiophenes, polypyrroles, polyanilines, polyfluorences, and any conjugated co-polymer segment. x, y and z are positive integers, where x and z is equal or greater than 1.

Abstract: The invention provides photoluminescent markers consisting essentially of fluorene copolymers, which are colorless or nearly colorless to the naked eye and exhibit strong photoluminescence between about 380-800 nm upon exposure to ultra-violet radiation or laser light. The soluble fluorene copolymers described in this invention having a general formula as shown in Formula 1. where: R1 and R2 are C1-C24 linear or branched alkyl chain, n is the number of repeating unit, M is a co-monomer unit having structures chosen to impart distinct physical or chemical properties to the marker. Also provided in the present invention are methods of use of the markers for tagging solid or liquid products and methods to detect said markers.

Abstract: Described herein is a photocurable resin composition for stereolithography comprising (a) a photocurable component, liquid at room temperature and comprising a photopolymerizable substance selected from monomers, oligomers, dendrimers and polymers and mixtures thereof, (b) at least one photoinitiator compound, and (c) at least one photoactivated color changing compound. The color changing compound can be adapted to go from essentially colorless to a given color, one given color to another or from a given color to colorless. Optionally, the resin composition will also contain component (d), namely at least one reactive silsesquioxanes (POSS).

Abstract: Disclosed herein is a novel hot melt ink comprising a colorant ink and an ink vehicle wherein the ink vehicle comprises at least one polyhedral silsesquioxane compound present in a proportion of about 0.1 to 30 wt % based on the total weight of the hot melt ink composition.

Abstract: Provided herein are novel polymeric coating materials for direct digital imaging by laser. More specifically the novel coating materials are thermally reactive near infrared absorption polymers designed for use with near infrared laser imaging devices. This invention further extends to the preparation and methods of use of the novel materials. The invention is particularly useful in the preparation of lithographic printing plates for computer-to-plate and digital-offset-press technologies. The invention extends to photoresist applications, to rapid prototyping of printed circuit boards and to chemical sensor development.

Abstract: The invention relates to thermal waterless lithographic printing plates comprising layers of inherent near infrared absorbing polymers for computer-to-plate and digital-offset-press technologies. More specially, this invention relates to thermal waterless lithographic printing plates, which can be imaged with near infrared laser light and which do not require post chemical processing step.More particularly, the present invention provides a thermal waterless printing plate suitable for near infrared laser imaging, said printing plate comprising:(i) a support substrate, and (ii) a composite top layer consisting of:(a) a near infrared absorbing adhesion promoting layer applied to the support substrate and(b) a near infrared absorbing ink repelling cross-linked silicone polymer layer.

Abstract: Provided herein are novel polymeric coating materials for direct digital imaging by laser. More specifically the novel coating materials are thermally reactive near infrared absorption polymers designed for use with near infrared laser imaging devices. This invention further extends to the preparation and methods of use of the novel materials. The invention is particularly useful in the preparation of lithographic printing plates for computer-to-plate and digital-offset-press technologies. The invention extends to photoresist applications, to rapid prototyping of printed circuit boards and to chemical sensor development.