Abstract:
A non-aqueous metal catalytic composition includes (a) a complex of silver and a hindered aromatic N-heterocycle comprising reducible silver ions in an amount of at least 2 weight %, (b) a silver ion photoreducing composition in an amount of at least 1 weight %, and (c) a photocurable component, a non-curable polymer, or a combination of a photocurable component and a non-curable polymer. This non-aqueous metal catalytic composition can be used to form silver metal particles in situ during suitable reducing conditions. The silver metal can be provided in a suitable layer or pattern on a substrate, which can then be subsequently subjected to electroless plating to form electrically-conductive layers or patterns for use in various articles or as touch screen displays in electronic devices.
Abstract:
A non-aqueous metal catalytic composition includes (a) a silver complex comprising reducible silver ions, (b) an organic phosphite, (c) an oxyazinium salt silver ion photoreducing agent, (d) a hindered pyridine, (e) a photocurable component, a non-curable polymer, or combination of a photocurable component and a non-curable polymer, and (f) a photosensitizer different from all components (a) through (e) in the non-aqueous metal catalytic composition, in an amount of at least 1 weight %. This non-aqueous metal catalytic composition can be used to form silver metal particles in situ during suitable reducing conditions. The silver metal can be provided in a suitable layer or pattern on a substrate, which can then be subsequently subjected to electroless plating to form electrically-conductive layers or patterns for use in various articles or as touch screen displays in electronic devices.
Abstract:
Pyrene can be used as a fluorescent probe for various industrial purposes. For example, it can be included in photocurable or thermally curable compositions and monitoring the fluorescence emission spectra before and after some curing will provide an indication of how much curing has occurred. Such monitoring can be carried out multiple times during a manufacturing process. Monitoring can also be done at different locations of a composition such as at inner and outer surfaces of a photocured or thermally cured layer.
Abstract:
A precursor dielectric composition comprises: (1) a photocurable or thermally curable thiosulfate-containing polymer that has a Tg of at least 50° C. and comprises: an organic polymer backbone comprising (a) recurring units comprising pendant thiosulfate groups; and organic charge balancing cations, (2) optionally, an electron-accepting photosensitizer component, and (3) one or more organic solvents in which the photocurable or thermally curable thiosulfate-containing polymer is dissolved or dispersed. These precursor dielectric compositions can be applied to various substrates and eventually cured to form dielectric compositions or layers for various types of electronic devices.
Abstract:
Photocurable or thermally curable thiosulfate-containing polymers have a Tg of at least 50° C. and (a) recurring units comprising pendant thiosulfate groups, and (b) recurring units comprising organic charge balancing cations that are associated with the (a) recurring units sufficiently to provide a net neutral charge with the pendant thiosulfate groups. These polymers can be represented by the following Structure (III): wherein R represents the organic polymer backbone, G is a single bond or a divalent linking group, M+ represents the organic charge balancing cation, and “a” represents at least 0.5 mol % and up to and including 50 mol % of (a) recurring units, and “b” represents the (b) recurring units and is at least equal to the “a” mol %, based on the total recurring units. These thiosulfate-containing polymers can be used to made dielectric compositions and gate dielectric layers in various devices.
Abstract:
The photocuring efficiency of an N-oxyazinium salt photo initiator is increased by mixing it with an organic phosphine as a photoinitiator efficiency amplifier, and with an aryl aldehyde or alkyl aldehyde having a molecular weight of less than 1000. This mixture or photoinitiator composition can be used to cure acrylates or other photocurable compounds, particularly in an oxygen-containing environment.
Abstract:
A thiosulfate polymer includes both an electron-accepting photosensitizer component and thiosulfate groups in the same molecule, arranged in random order along the backbone. The thiosulfate polymer composition can be formulated into compositions and applied to various articles, or used to form a predetermined polymeric pattern after photothermal reaction to form crosslinked disulfide bonds, removing non-crosslinked polymer, and reaction with a disulfide-reactive material. Such thiosulfate polymer compositions can also be used to sequester metals in nanoparticulate form, and as a way for shaping human hair in hairdressing operations.
Abstract:
A thiosulfate polymer composition includes an electron-accepting photosensitizer component, either as a separate compound or as an attachment to the thiosulfate polymer. The thiosulfate polymer composition can be applied to various articles, or used to form a predetermined polymeric pattern after photothermal reaction to form crosslinked disulfide bonds, removing non-crosslinked polymer, and reaction with a disulfide-reactive material. Such thiosulfate polymer compositions can also be used to sequestering metals.
Abstract:
A thiosulfate polymer composition includes an electron-accepting photosensitizer component, either as a separate compound or as an attachment to the thiosulfate polymer. The thiosulfate polymer composition can be applied to various articles, or used to form a predetermined polymeric pattern after photothermal reaction to form crosslinked disulfide bonds, removing non-crosslinked polymer, and reaction with a disulfide-reactive material. Such thiosulfate polymer compositions can also be used to sequester metals in nanoparticulate form, and as a way for shaping human hair in hairdressing operations.
Abstract:
Photocuring methods are made more efficient by using an N-oxyazinium salt photoinitiator with an organic phosphine as a photoinitiator efficiency amplifier. This photoinitiator composition can be used to cure acrylates or other photocurable compounds, particularly in an oxygen-containing environment. The method can be used to prepare various articles, fibers, or devices with photocured compositions.