Abstract: An aerogel type platinum-ruthenium-carbon catalyst of microporous structure maintaining long-term high catalytic activity, suitable for a direct methanol fuel cell, is manufactured by a sol-gel process, and supercritical drying while maintaining a microporous structure. The catalyst contains 5 to 70% by weight of platinum and ruthenium, remainder carbon, the platinum and ruthenium atomic ratio being of 1/4 to 4/1. Metal salts and base catalyst are added to a solution of organic gel materials, a solution of basic amine is added to the first solution, and the pH of the resulting solution is adjusted forming a sol, the sol is aged at 40 to 90 for 1 to 20 days forming and stabilizing the gel, solvent is removed from the gel by supercritical drying, and finally the aerogel is carbonized in an inert atmosphere, followed by hydrogen reduction.

Abstract: The instant invention provides a late transition metal complex which can be used with an activating cocatalyst to produce polymers and copolymers. The invention also provides methods for polymerizing olefins, as well as copolymers having polar monomers incorporated therein.

Abstract: A catalyst and method for performing a Michael addition reaction between a &bgr;-dicarbonyl compound with a cyclic or acyclic enone, where the catalyst comprises a substituted or unsubstituted lanthanum-linked BINOL complex, e.g. a (R,R)-La-linked-BINOL complex (I), are described. The catalyst is stable in air, is readily separated from the reaction mixtures and may be reused if desired.

Abstract: The present invention relates to a process for manufacturing polyolefin polymerization catalysts and provides a process for manufacturing polyolefin polymerization catalysts, wherein after manufacturing a homogeneous solution of magnesium compounds using magnesium compounds and alcohols along with hydrocarbon solvents and contacting with titanium compounds by adding organic aluminum, the mixture is treated again with organic aluminum or alcohols having 5 or less carbon atoms, then contacted with titanium compounds. Polyolefin polymerization catalysts prepared by the preparation process of the present invention have superior polyolefin polymerization activities, they prepare polymers having high Melt Flow Ratios, and produce a lesser amount of fine particle polymers.

Abstract: The inks provide excellent ink-jet prints having excellent imaging onto glossy inkjet media with increased dot size leading to improved dot visibility and banding robustness of the image. The aqueous inks each comprise from about 0.1 to about 20 wt % of at least one colorant (CMYK) with the black ink comprising from about 0.5 to about 20 wt % of at least one colorant; from about 7 to about 20 wt % of at least one 1,2-diol, from about 0.5% to about 2 wt % of a mono- or di-hydric alcohol; 0 to about 1.5 wt % of at least one component independently selected from the group consisting of buffers, biocides, and metal chelators; and the balance water. The formulations are substantially free of surfactants and other solvents.

Abstract: An ink for ink-jet recording is provided, in which an amount of water X (% by weight) in the ink and a saturation viscosity Y satisfy Y≦4.5e0.09X. The saturation viscosity Y is a viscosity (mPa·s) obtained when an ink residual liquid, which is obtained by evaporating volatile components of the ink until a change in weight of the ink is less than 0.05 g/day per 50 g of ink under a condition of a temperature of 60° C. and a humidity of 40%, is cooled to a temperature of 25° C. in an environment of a humidity of 40%. X satisfies 50≦X≦75. The ink exhibits satisfactory jetting stability when the ink is normally used. Further, the ink is easily restored to give a normal jetting state even after undergoing an abnormal condition, for example, when the ink is left to stand without any nozzle cap.

Abstract: Ink sets that are particularly suitable for inkjet printing over a large range of uncoated papers, have reduced bleed between color and black inks, and include black and color inks that are mutually compatible in pens. The ink sets include at least one pigment-based black ink having cationic and anionic dispersant groups, and at least one color dye or pigment that interacts with the black ink when printed on a receiving medium. The black pigment is self-dispersed and is dual treated with cationic and anionic dispersant groups. When printed onto an alkaline medium, the black pigment will carry a net negative charge that will interact with the positively charged color dyes and/or pigments and, thus, be bleed arrested. When printed onto an acidic medium, the black pigment will have a positive charge, will interact with the negatively charged color dyes and/or pigments, and thus be bleed arrested.

Abstract: The present invention relates to novel singlet oxygen catalysts useful for the production of specialty chemicals. The catalysts include a core material selected from amine coated polymeric beads, amine coated glass beads and multi-generational dendrimers to which condensed carbon molecules are bonded. These catalysts may in turn give rise to other solid phase heterogeneous catalysts useful for stereoselective or regioselective reactions, by way of non-limiting example.

Abstract: A process for producing a supported metal catalyst which comprises reducing a metal halide in the liquid phase in the presence of a support material, an organic base and a reducing agent. In accordance with the process, the supported metal catalyst which comprises a metal component supported in the highly dispersed condition and exhibits high activity can be obtained easily.

Abstract: An ink for ink jet recording including at least a particulate pigment having a sulfur-containing dispersibility providing group chemically bonded to the pigment surface with a treatment containing sulfur, a penetrating agent and a liquid component including water. In one embodiment, the liquid component includes polyvalent metal ions and has a sulfur content that is 2,000 ppm or less as calculated in terms of SO42−. In other embodiments, the ink has (a) a sulfonic acid anion group or a sulfinic acid anion group and an alkaline metal or monovalent counter ion; (b) a penetrating agent having the formula R—EOn2—POm2—X; and (c) a sulfur-containing dispersibility providing group in an amount of 10×106 equivalent or more per gram of particulate pigment.

Abstract: A metallocene catalyst may be temporarily and reversibly passivated by contact with an effective amount of an unsaturated hydrocarbon passivating compound.

Abstract: The present invention provides a polynuclear &agr;-diimine Ni(II) complex used as the precursor of the catalyst in polymerizing polyolefine, represented by the following formula: wherein M is Ni; X is Cl or Br; m and n is independently an integer from 0 to 100, respectively; R1 and R2 is the same or different, and is selected from the group consisting of H, methyl, ethyl, isopropyl and tert-butyl; Y is CR3R4, wherein R3 and R4 is the same or different, and is selected from the group consisting of H, methyl, ethyl, propyl, butyl and phenyl, or R3 and R4 forming a cyclic alkyl group; R5 and R6 is the same or different, and is selected from the group consisting of methyl, ethyl, propyl and heterocyclic group; Q is a cyclic divalent residual group of the following formula or a mixture thereof: The compound of this invention can be used to catalyze the polymerization of ethylene and to prepare high molecular weight branched polyethylene.

Abstract: The present invention relates to a catalyst composition for homopolymerization or copolymerization of olefins comprising: (a) a solid catalyst precursor comprising a transition metal compound of group IVB, VB, or VIB of the periodic table, a magnesium compound and aliphatic polyketone particles; and (b) a cocatalyst comprising an aluminum alkyl, an aluminoxane or mixtures thereof; and a process for homopolymerisation or copolymerisation of olefins.

Abstract: Water-based chemical indicator inks for ethylene oxide sterilization processes and methods for its use. The chemical indicator ink contains at least one pH indicator dye selected from the group consisting of Bromocresol green, Bromophenol blue, Methyl red, Ethyl orange, and combinations thereof. The pH indicator dye undergoes an irreversible color change when exposed to ethylene oxide vapor in the presence of low-temperature steam, but when exposed to other sterilization processes either does not undergo a color change or undergoes a color change that is different than is obtained when exposed to ethylene oxide.

Abstract: Gold-containing catalysts, which catalyst is comprised of gold on a nanostructure support, which support is characterized as graphite nanofibers comprised of graphite sheets, which graphite sheets are oriented substantially perpendicular or parallel to the longitudinal axis of the nanofiber and wherein said graphite nanofiber contains exposed surfaces and wherein at least about 95% of said exposed surfaces are comprised of edge sites.

Abstract: The present invention relates to a solid complex titanium catalyst for homo-polymerization and co-polymerization of &agr;-olefin, obtained by (i) producing a solution of a magnesium compound by dissolving a magnesium compound and a compound of IIIA Group of the Periodic Table in a solvent mixed with cyclic ether, one or more types of alcohol, a phosphorous compound, and an organosilane, (ii) precipitating the solid particles by reacting said magnesium solution with a compound of a transition metal, a silicon compound, or the mixture thereof, and (iii) reacting said precipitated solid particles with a titanium compound and an electron donor. The catalyst of the present invention is of large particle size, narrow particle distribution, and high catalytic activity, while the polymers obtained with the use of this catalyst are of excellent stereoregularity.

Abstract: The invention provides a process for preparing a platinum-ruthenium catalyst and the catalyst prepared therewith. The catalyst can be supported on a support material in powder form or may also be unsupported. To prepare the supported catalyst, the support material is suspended in water and the suspension is heated to at most the boiling point. While keeping the temperature of the suspension the same, solutions of hexachloroplatinic acid and ruthenium chloride are then added to the suspension, then the pH of the suspension is increased to a value between 6.5 and 10 by adding an alkaline solution and the noble metals are thus precipitated onto the support material. Afterwards, one or more organic carboxylic acids and/or their salts are added to the suspension and the catalyst is chemically reduced, washed, dried and optionally subsequently calcined under an inert or reducing atmosphere at a temperature between 300 und 1000° C.

Abstract: A honeycomb filter is composed mainly of silicon carbide or of metallic silicon and silicon carbide; the filter being formed by bonding a plurality of honeycomb segments each of which has a plurality of through-holes being partitioned by porous partition walls. The filter is plugged alternately at the exhaust gas inlet face and exhaust gas outlet face of honeycomb segments. Each two adjacent honeycomb segments are contacted with each other at each a portion of their sides facing each other. They are bonded with each other at least at part of each portion of said sides other than the contacted portion through a bonding material having a strength lower than that of a basal body of honeycomb segment. Thus, the thermal stresses generated among the respective portions constituting the filter is reduced. The generation of cracks, etc. can be also prevented considerably.

Abstract: The present invention provides a detection cell that comprises a body having a first end that defines a first opening, a second end that defines a second opening, and an internal surface that defines an interior cavity that fluidly connects the first opening and the second opening; wherein the interior cavity is capable of holding a support matrix for receiving a chemical species through the first opening, passing the chemical species through the interior cavity, and discharging the chemical species through the second opening; and wherein at least two portions of the body are capable of providing a first and a second guiding region each having an index of refraction less than that of the support matrix. A system utilizing the detection cell of the present invention is also provided. In another embodiment, the present invention provides a method for guiding light through a support matrix through which a chemical species is passing.

Abstract: It is an object of the present invention to contribute to prevention of worsening an exhaust gas emission at the time of cold starting up of an internal combustion engine by providing a technology for accurately determining the degradation of an exhaust gas purifying catalyst provided in an exhaust passage of the internal combustion engine, specifically, the degradation of a low temperature activation capability of the exhaust gas purifying catalyst.