Abstract: The invention is directed to a thick film getter composition comprising: (a) desiccant material; dispersed in (b) organic medium comprising (1) curable organic polymeric binder; (2) monomer; and (3) photoinitiator.

Abstract: The invention is directed to a screen-printable getter composition comprising: (a) glass frit; dispersed in (b) organic medium. The invention is further directed to a screen-printable thick film getter composition comprising: (a) glass frit; and (b) desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure.

Abstract: Compositions for mercury dispensing in lamps are disclosed, comprising a first component comprising mercury and at least a metal selected between titanium and zirconium and a second component consisting of aluminum or either a compound or an alloy including at least 40% by weight of aluminum, wherein the weight ratio between the first and the second component is equal to or lower than 9:1; optionally, the compositions may also include a third component, selected among metals or oxides capable of reacting exothermically with aluminum.

Abstract: A composition for removing hydrogen from an atmosphere, comprising a mixture of a polyphenyl ether and a hydrogenation catalyst, preferably a precious metal catalyst, and most preferably platinum, is disclosed. This composition is stable in the presence of oxygen, will not polymerize or degrade upon exposure to temperatures in excess of 200° C., or prolonged exposure to temperatures in the range of 100-300° C. Moreover, these novel hydrogen getter materials can be used to efficiently remove hydrogen from mixtures of hydrogen/inert gas (e.g., He, Ar, N2), hydrogen/ammonia atmospheres, such as may be encountered in heat exchangers, and hydrogen/carbon dioxide atmospheres. Water vapor and common atmospheric gases have no adverse effect on the ability of these getter materials to absorb hydrogen.

Abstract: A gun chamber for a charged particle emitter is provided, said gun chamber comprising at least one electrode coated with a non-evaporable getter (NEG) material.

Abstract: A getter composition suitable for gettering hydrogen comprises a first metal oxide and a second metal oxide, said first metal oxide being more readily reducible in hydrogen at temperatures between 0° C. and 100° C. than said second metal oxide.

Abstract: The invention is directed to a screen-printable getter composition comprising: (a) glass frit; dispersed in (b) organic medium. The invention is further directed to a screen-printable thick film getter composition comprising: (a) glass frit; and (b) desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure.

Abstract: A composition for removing hydrogen from an atmosphere, comprising a mixture of a polyphenyl ether and a hydrogenation catalyst, preferably a precious metal catalyst, and most preferably Pt. This composition is stable in the presence of oxygen, will not polymerize or degrade upon exposure to temperatures in excess of 200° C., or prolonged exposure to temperatures in the range of 100-300° C. Moreover, these novel hydrogen getter materials can be used to efficiently removing hydrogen from mixtures of hydrogen/inert gas (e.g., He, Ar, N2), hydrogen/ammonia atmospheres, such as may be encountered in heat exchangers, and hydrogen/carbon dioxide atmospheres. Water vapor and common atmospheric gases have no adverse effect on the ability of these getter materials to absorb hydrogen.

Abstract: Getter systems are provided having a phase being active in the sorption of gas inserted in the pores of a porous material. The porous material is, in turn, dispersed in a polymeric means that is permeable to the gas to be sorbed.

Abstract: Getter multilayer structures are disclosed, embodiments of which include at least a layer of a non-evaporable getter alloy having a low activation temperature over a layer of a different non-evaporable getter material having high specific surface area, both preferably obtained by cathodic deposition. The multilayer NEG structures exhibit better gas sorbing characteristics and lower activation temperature lower than those of deposits made up of a single material. A process for manufacturing such structures includes depositing a first, high surface area NEG film on a support, and then depositing a thin over layer of low activation NEG film.

Abstract: The invention is directed to a thick film getter composition comprising: (a) desiccant material; dispersed in (b) organic medium comprising (1) curable organic polymeric binder; (2) monomer; and (3) photoinitiator.

Abstract: A hydrogen-trapping compound is provided, along with a process for manufacturing the compound, and its uses, wherein the hydrogen-trapping compound is characterized in that it contains at least one metal salt of formula MX(OH), in which M represents a divalent transition element, for example Co or Ni; O represents an oxygen atom; X represents an atom of group 16 of the Periodic Table of the Elements, excluding O, for example a sulphur atom; and H represents a hydrogen atom, and wherein the hydrogen-trapping compound is effective for trapping hydrogen, hydrogen within a material and free hydrogen and is applicable in situations in which hydrogen is evolved and in which it has to be trapped, especially for safety reasons.

Abstract: An article, such as a polymeric film, sachet, purge control pad, or label, includes a sulfur scavenger. In some embodiments, an oxygen scavenger is also included. A method includes providing an article, including a sulfur scavenger and an oxygen scavenger; and subjecting the article to a dosage of actinic radiation effective to trigger the oxygen scavenger. A method of reducing the sulfur content of a package containing a food product includes either (1) providing a film including a layer including a zinc ionomer, and a layer including an oxygen scavenger; packaging the food product in the film; and storing the package for at least 24 hours; or (2) providing the food product at a temperature of ?40° F.; providing a film including a layer including a sulfur scavenger; packaging the food product in the film; and storing the package for at least 24 hours.

Abstract: A disk-shaped wafer is described which is based on an inorganic sorbent and a binder, with a thickness of less than 700 microns, which can be obtained by pressing a mixture of the inorganic sorbent, about 20 to 60% by weight of the binder and about 10 to 15% by weight water at a pressure of at least 70 MPa; and calcining the resulting green wafer at temperatures of at least about 500° C. until the water content is substantially removed.

Abstract: An improved getter device and method for forming a calcium-rich getter thin film in an electronic vacuum device is disclosed. The getter device includes a powder of a Ca—Ba—Al ternary alloy composed of between 53% and 56.8% by weight of aluminum, from 36% to 41.7% by weight of calcium and from 1.5% to 11% by weight of barium. The method allows the formation of a calcium-rich getter thin film with a substantially reduced amount of released hydrogen in the vacuum device.

Abstract: This invention describes a solution to the particular problem of liquid water formation in hydrogen getters exposed to quantities of oxygen. Water formation is usually desired because the recombination reaction removes hydrogen without affecting gettering capacity and the oxygen removal reduces the chances for a hydrogen explosion once free oxygen is essentially removed. The present invention describes a getter incorporating a polyacrylate compound that can absorb up to 500% of its own weight in liquid water without significantly affecting its hydrogen gettering/recombination properties, but that also is insensitive to water vapor.

Abstract: A method for preventing contamination, oxidation and gas absorption of reactive materials, and articles formed thereby. The method generally entails depositing a first layer of a reactive material and a second layer of a substantially nonreactive material so that the second layer protects the first layer from a surrounding atmosphere. For example, the first and second layers may be deposited to form a film on a surface within a chamber that is desired to be maintained in a vacuum during use of the article. The second layer is sufficiently thin such that appropriately heating the first and second layers causes the reactive material of the first layer to become interdiffused with the nonreactive material of the second layer, to the extent that at least a portion of the reactive material is able to react and getter gases from the surrounding atmosphere.

Abstract: Disclosed are a non-evaporation type getter excellent in gettering effect, capable of maintaining the inside of a gas-tight container in a display apparatus, particularly a flat panel display apparatus or the like, in a high vacuum condition, easy to mount and less liable to contaminate the inside of the gas-tight container, a display apparatus including the getter, and methods of manufacturing the same. The non-evaporation type getter (20) includes a molded body including at least one element selected from the group consisting of Ti, Zr, Al, V, and Fe as a principal constituent thereof, the molded body formed by powder injection molding. The molded body is composed of a porous body having a porosity of 10 to 30%.

Abstract: A method for reducing the loss of particles from the surface of porous getter bodies is taught herein. The method consists in producing on the surface of the porous getter a thin layer of a metal or metal alloy with a deposition technique selected among the deposition of materials from arc generated plasma, ionic beam deposition and cathodic deposition. The deposition technique allows for granular or columnar surface of the covering material but still allowing access to the surface of the getter material, resulting in a reduced getter particle loss.

Abstract: A non-evaporating getter maintains the adsorbability for the residual gases, and in addition, secures sufficient characteristics particularly even when it experiences a high-temperature and low-vacuum condition in the fabrication process of a display unit. The non-evaporating getter includes a substrate having no function as a getter and a polycrystalline film arranged on the substrate which film contains Ti as the main component and has a host of voids in the interior thereof. A non-evaporating getter is made by forming a polycrystalline film containing Ti as the main component on the concavo-convex surface of the substrate which substrate has concavities and convexities on a surface thereof and has no function as a getter.

Abstract: An anodization-adapted aluminum alloy containing 2.0 to 3.5 wt % Mg and the remainder of 99.9 wt % or greater high-purity aluminum.

Abstract: A method and composition are disclosed for preventing uncontrolled exothermic reaction in the presence of a catalyst. A catalyst deployed as a finely divided powder which is attached to the surface of a low melting point wax or wax-like material which is utilized as a carrier for the catalyst. During operation should the catalyst overheat due to uncontrolled conditions brought about by a run-away reaction the heat of reaction melts the low melting point wax which would itself wet the surface of the catalyst and prevent further catalysis.

Abstract: A device and a method are disclosed for introducing into the fluorescent lamps small amounts of mercury. The device is formed of a metallic container which is capable of containing powders of one or more compounds having the general formula TixZryHgz, but is not hermetically sealed, in order to allow the discharge of mercury vapors generated by the decomposition of such compounds. Some possible device geometries are disclosed, as well as some possible arrangements of the same inside lamps. Finally a method is disclosed for introducing mercury into a lamp by means of a device of the invention, without the device remaining in the resulting lamp.

Abstract: This invention describes a solution to the particular problem of liquid water formation in hydrogen getters exposed to quantities of oxygen. Water formation is usually desired because the recombination reaction removes hydrogen without affecting gettering capacity and the oxygen removal reduces the chances for a hydrogen explosion once free oxygen is essentially removed. The present invention describes a getter incorporating a polyacrylate compound that can absorb up to 500% of its own weight in liquid water without significantly affecting its hydrogen gettering/recombination properties, but that also is insensitive to water vapor.

Abstract: The present invention relates to a composition capable of hydrogen sorption in a closed container at low pressure, comprising an unsaturated organic substance and a hydrogenation catalyst. Said unsaturated organic substance is a compound having general formula A or A′, or a dimer or polymer thereof, or a copolymer wherein one of the structural units has the general formula A or A′: wherein R1, R2 and R3 are hydrogen or hydrocarbon moieties optionally comprising one or more heteroatoms, at least one among R1, R2 and R3 being chosen in the group of alkenyl, alkynyl, arylalkenyl and arylalkynyl moieties, optionally comprising one or more heteroatoms.

Abstract: A solid halogen-containing lamp fill material and a method of introducing small amounts of halogen into a HID lamp are disclosed. The solid material may include an admixture of a metal and a metal halide in the form of spheres of high purity, uniform size and uniform composition. Solid lamp fill material and methods of introducing small quantities of one or more metals into a HID lamp are also disclosed.

Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.

Abstract: Non-evaporable getter alloys containing zirconium, vanadium, iron, manganese and one or more elements selected among yttrium, lanthanum and Rare Earths are described, having improved features of gas sorption, particularly of nitrogen, with respect to the known getter alloys.

Abstract: Compositions containing getter material and getter devices for which gettering activity can be activated at applied temperatures that are lower than those temperatures required for activating the getter material alone are disclosed. In one aspect, a getter composition that includes a getter component and an activator component is provided. The getter component is selected from the group consisting of evaporable and non-evaporable getter materials. The activator component is effective to heat said getter material to a temperature greater than about 500° C. when said activator material is heated to a temperature of between about 280° C. and about 500° C. In some embodiments, the activator component is effective to bring the temperature of the getter material to greater than about 1,000° C. These materials can be used in devices and locations for which low applied activation temperatures are required.

Abstract: Compositions containing getter material and getter devices for which gettering activity can be activated to applied temperatures that are lower than those temperatures required for activating the getter material alone are disclosed. In one aspect, a getter composition that includes a getter component and an activator component is provided. The getter component is selected from the group consisting of evaporable and non-evaporable getter materials. The activator component is effective to heat said getter material to a temperature greater than about 500° C. when said activator material is heated to a temperature of between about 280° C. and about 500° C. In some embodiments, the activator component is effective to bring the temperature of the getter material to greater than about 1,000° C. These materials can be used in devices and locations for which low applied activation temperatures are required.

Abstract: A method and composition are disclosed for preventing uncontrolled exothermic reaction in the presence of a catalyst. A catalyst deployed as a finely divided powder which is attached to the surface of a low melting point wax or wax-like material which is utilized as a carrier for the catalyst. During operation should the catalyst overheat due to uncontrolled conditions brought about by a run-away reaction the heat of reaction melts the low melting point wax which would itself wet the surface of the catalyst and prevent further catalysis.

Abstract: Thionyl chloride is a hazardous and reactive chemical used as the liquid cathode in commercial primary batteries. Contrary to previous thinking, ASZM-TEDA® carbon (Calgon Corporation) reversibly absorbs thionyl chloride. Thus, several candidate materials were examined as irreversible getters for thionyl chloride. The capacity, rate and effect of temperature were also explored. A wide variety of likely materials were investigated through screening experiments focusing on the degree of heat generated by the reaction as well as the material absorption capacity and irreversibility, in order to help narrow the group of possible getter choices. More thorough, quantitative measurements were performed on promising materials. The best performing getter was a mixture of ZnO and ASZM-TEDA® carbon. In this example, the ZnO reacts with thionyl chloride to form ZnCl2 and SO2. The SO2 is then irreversibly gettered by ASZM-TEDA® carbon.

Abstract: There has been invented a codeposition process for fabricating hydrogen scavengers. First, a &pgr;-bonded allylic organometallic complex is prepared by reacting an allylic transition metal halide with an organic ligand complexed with an alkali metal; and then, in a second step, a vapor of the &pgr;-bonded allylic organometallic complex is combined with the vapor of an acetylenic compound, irradiated with UV light, and codeposited on a substrate.

Abstract: A process is provided for the production of porous non-evaporable getter materials comprising at least one first element selected from Zr and Ti and at least one second element selected from V, Cr, Mn and Ni. The starting metal powders are produced by reduction of the corresponding oxides, with calcium hydride and the thus obtained powders are compacted and sintered at a value of pressure and temperature in a given range. The getter materials due to the production process, have a novel distribution of chemical composition through the getter body, resulting in an improved combination of mechanical and gas-sorption properties.

Abstract: An article of manufacture includes an oxygen scavenger and a zeolite. The article can be in the form of e.g. a film or sealing compound. A package can be made from the article for containing an oxygen-sensitive article such as food. The zeolite reduces migration of odor causing by-products of the oxygen scavenging process. A method of making an article of manufacture having reduced migration of by-products of an oxygen scavenging reaction includes providing an article including an oxygen scavenger and a zeolite; and exposing the article to actinic radiation.

Abstract: A fluorescent lamp containing zinc amalgam and a method of precisely controlling the amount of mercury introduced into a temperature controlled fluorescent lamp. Precise quantities of mercury may be introduced into a fluorescent lamp in the form of solid zinc amalgam pellets that are in a metastable, non-equilibrium state.

Abstract: It is described a process for the production of porous non-evaporable getter materials comprising at least one first element selected between Zr and Ti and at least one second element selected among V, Cr, Mn and Ni, wherein the starting metal powders are produced by reduction with calcium hydride of the corresponding oxides and the thus obtained powders are compacted and sintered at a value of pressure and temperature in a given range; also described are getter materials that, due to the production process, have a novel distribution of chemical composition through the getter body resulting in an improved combination of mechanical and gas-sorption properties.

Abstract: An evaporable getter device containing a mixture of nickel and BaAl4 is made to have a shorter barium evaporation time by using a mixture of nickel powders in which the particles of nickel have different morphologies and different specific areas.

Abstract: An oxygen scavenging composition composed of a carrier and a metal coated, inert, porous particulate material having the metal substantially in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The composition may form at least a part of the interior surface of the container or be present therein in the form of a film, mat, sachet or ceramic.

Abstract: Method for reducing the number of viable organisms present in ship ballast water wherein the ballast water is treated so as to reduce the concentration of dissolved oxygen and/or carbon dioxide to a level(s) at which a substantial portion of the organisms present cease to remain viable. The treatment comprises adding to the ballast water a suitable amount of an antioxidant.