Platinum Metals Rev., 1986, 30, (3), 153
NEW PATENTS: July 1986
METALS AND ALLOYS
tokuriki honten k.k. Japanese Publ. Appl. 60/141,383/4/5/6
Sheets of Pt and two or more of Pt-Ir, Pt-Rh and Pt-Au alloys are manufactured to predetermined thicknesses so that interlayer recrystallisation is prevented and internal defects do not coincide.
Amorphous Alloy for Torque Sensors
toshiba k.k. Japanese Publ. Appl. 60/234,948
An amorphous alloy for detecting torque without contact, with high saturated magnetic flux density and magnetostriction, is composed of FeaMbSicBd where M is 1−10% of at least one platinum group metal, and part of the Fe is replaced by Ni and/or Co.
Magnetic Recording Material
sony corp. Japanese Publ. Appl. 60/239,007
Amorphous thin film of composition Co1−x−yHfxPty where x is 0.04–0.07, y is 0.005–0.15, having large saturation magnetic flux density, and small saturation magnetostriction constant is made by liquid quenching or sputtering.
Magnetic Recording Medium
Platinum Alkyne Complexes
Electrode for Reducing Oxygen
national research development corp. British Appl. 2,164,785A
An electrode for reducing O has a substrate of lowash C, such as coconut shells converted to charcoal. The substrate is loaded with a catalyst such as Pt phthalocyanine or Pb-Ru oxide. Macrocyclic derivatives of transition metals, Au or Ag may be used as the catalyst on electrodes for fuel cells.
toppan printing k.k. Japanese Accepted Appl. 86/3,281
A unit which stores H2 in an electric-insulative tank contains a permeable electrode of Pd or Pd alloy.
Electrode for Electrolysis
permelec electrode French Appl. 2,560,611
An electrode of increased service life when used in the electrolysis of dilute H2SO4 acid, for example, consists of a substrate such as Ti coated with an intermediate layer which is a mixture of (a) TiO2 and/or SnO2, (b) Al2O3, Ga2O3, Fe2O3, Co2O3, Ni2O3 and/or Tl2O3 and (c) Pt, and then with a layer of active material, preferably In oxide.
ELECTRODEPOSITION AND SURFACE COATINGS
Black and Blue Rhodium Plating
nippon mining k.k. European Appl. 171,091A
Wear resistant black or blue Rh plating is obtained by anodic electrolysis in a bath comprising (in)organic acid or salts, but not strong acid, and (m)ethanol, ethylene glycol, etc., and/or NH4OH.
Chemical Plating of Fibrous Articles
toda kogyo corp. European Appl. 174,183A
Shaped, fibrous articles are made electroconductive by chemical plating, as before, but now the sensitising stage is carried out with a Pd hydrosol containing a cationic surfactant, an anionic surfactant and/or a non-ionic surfactant.
Vacuum Deposition of Films
kiev poly. World Patent Appl. 86/00092A
An evaporator for vacuum deposition of films such as of Pt, Pd, Au and Ag is claimed.
Palladium-Nickel Alloy Electrodeposition
LABORATORY APPARATUS AND TECHNIQUE
toyota chuo kenky. British Appl. 2,162,324A
An O2 sensor with low sensitivity to Pb poisoning comprises a solid electrolyte and a composite sensing electrode having a Pt layer and a Rh and/or Pd layer.
Getter/Ion Atomisation Combination Pump
siemens a.g. British Appl. 2,164,788A
A combination pump for high and ultra high vacuum systems comprises an ion atomisation pump in combination with a getter sorption pump consisting of at least one getter element such as Pt, Pd, Zr, Ce or their mixtures or alloys.
Electrochemical Flow Cell
esa inc. U.S. Patent 4,552,013
An electrochemical flow cell of specified design for testing solutions incorporates (a) two reference electrodes, for example of Pd oxide wire, (b) two counter electrodes, for example of Pd wire, and (c) a working electrode of microfine Au particles.
Sensor for Hydrogen Fluoride
british nuclear fuels ltd. U.S. Patent 4,552,624
In an electrochemical device for measuring HF in the atmosphere or gas streams the cathode and anode are both of Pt wire.
Electrode for Oxygen Sensor
hitachi chemical k.k. Japanese Publ. Appl. 61/17,950
Pt paste was applied to the surfaces of a closed cylinder of ZrO2 stabilised yttria, and calcined to form a Pt layer. An aqueous solution of hexachlor-platinic acid was put on top of the Pt layer and baked to form the detector electrode. The catalytic layer is firmly attached and remains so, while resistance to O ion conduction is low.
Carbon Monoxide Detector
off. nat. aerospatiale French Appl. 2,565,346
A CO detector comprises a thin layer of Sn oxide doped with Pt or Pd deposited on an electrically resistant substrate.
Portable Oxygen Generator
atomic energy canada ltd. Canadian Patent 1,134,551
A portable O2 generator comprises an electrolytic O2 and H2 generator from H2O, a residual O2 and H2 gas recombiner containing a catalyst of Pt crystallites dispersed in polymeric material, a primary H2 and O2 recombiner also containing a Pt crystallite/polymeric material catalyst and a means for connecting the water source to the electrolytic generator.
Ethylene Oxide Production Catalyst
Exhaust Gas Conversion Catalyst
hutschenreuther a.g. British Appl. 2,163,364A
Exhaust gas conversion catalysts comprise 50−90wt.%SiC and 5−50wt.% of a Si alloy of Pt, Pd, Ag, Cu, Fe, O, Ni, Cr, V, Mo or Mn.
Liquid Hydrocarbon Synthesis
exxon research & engineering co. British Appl. 2,164,054A
Paraffinic hydrocarbons are produced by contacting a mixture of H2 and CO for at least 10 hours with a reduced and supported Ru catalyst. The Ru is supported on ZrTiO4, a lanthanide titanate or oxide.
I.C.E. Conversion Catalysts
soc. fr. prod. catalyse European Appl. 170,588A
New catalysts for exhaust gas conversion contain a support impregnated with (a) Zr, Ce and optionally Fe, (b) Pd, and (c) Ir and/or Rh. The catalysts can adsorb at least 60% of the CO, and can oxidise CO and hydrocarbons while reducing NOx.
Three-Way Emission Control Catalyst
w. r. grace co. European Appl. 170,841A
An auto emission catalyst comprises an Al2O3 support impregnated with a stabiliser 1−10wt.%La2O3 or rare earth oxide containing La2O3, and as promoters 1−20wt.%CeO2 and 0.5−5wt.% of lithia and ceria, and Pt and Rh.
Atmospheric Pollution Control
amoco corp. European Appl. 172,009A
A catalyst of Pt, rare earth metal, Cr, V or a Group VIII metal is coated onto oxides of Al, Bi, Mn, Y, Sb, etc., in the form of pellets and used for removing particulates of soot, ash, etc., and S oxides from the flue gases of steel mills, power plants, catalytic cracking units, etc.
I.C.E. Exhaust Gas Purification
nippon shokubai kk co. ltd. European Appl. 174,495A
Diesel exhaust gases contain more S oxides than those from petrol engines and to enable the purification catalyst to operate in these conditions, V oxide is added to the supported Pt, Pd and/or Rh catalyst.
Strong Acid Catalyst
research association of utilization of light oil European Appl. 174,836A
A new hydrocarbon conversion catalyst is a strong solid acid obtained by introducing a Group VIII metal and sulphate ions into a Group III or VI oxide or hydroxide, such as a sulphate-Pd-ZrO2 combination.
Olefins from Methanol
mobil oil corp. U.S. Patent 4,550,217
In the conversion of methanol to olefins using zeolite catalysts, for example exchanged with Pd or a lanthanide, higher catalyst activity is achieved by employing large zeolite particles.
uop inc. U.S. Patent 4,551,574
A catalyst for the conversion of paraffins to olefins consists of a porous carrier such as Al2O3 supporting Pt, In and a Group IA or IIA metal. The atomic ratio In : Pt is not less than 1.6 : 1.
atomic energy of canada U.S. Patent 4,552,744
In a process for making H2SO4 by oxidising flue gas SO2 with O2 in the presence of H2O and H2SO4, the catalyst consists of a porous refractory oxide carrier supporting Pt crystallites wet-proofed with PTFE.
Ethanol Synthesis Catalyst
mitsubishi gas chemical co. inc. U.S. Patent 4,552,986
A catalyst for the production of ethanol from methanol and synthesis gas consists of Co phosphate optionally together with a C-supported platinum group metal and/or a tertiary phosphine.
toyota jidosha k.k. Japanese Publ. Appl. 61/4,535
A monolith catalyst carrier has Pt, Pd, Ir or Rh catalyst on the inner surface of its pores, giving a higher temperature at the centre than near the circumference. The catalyst clarifies I.C.E. gas, and the gas flow rate is higher at the centre of the catalyst.
Carboxylic Acids from Lower Esters and Formic Acid
huls a.g. European Appl. 173,019A
Carboxylic acids are produced from esters and formic acid, such as acetic acid from methyl acetate, using a Rh-halogen catalyst promoted with a Cr compound, an organic N compound and/or a P compound, such as Rh trichloride and CH3I used with Cr hexacarbonyl or pyridine or triphenyl phosphine.
british petroleum co. p.l.c. European Appl. 174,194A
The oxidation of paraffins and olefins with an organic hydroperoxide is catalysed by a Ru compound promoted with HBr, such as Ru acetylacetonate/HBr.
Hydroperoxide Decomposition Catalyst
atlantic richfield co. U.S. Patent 4,551,553
A very active, stable catalyst for the decomposition of organic hydroperoxides to corresponding alcohols and ketones is Cr and Ru acetylacetonates.
Aldehyde Production Catalyst
Monitoring Cathodically Protected Structures
oronzio de nora impianti European Appl. 170,929A
Simultaneous potential readings at different points of a cathodically protected structure are undertaken by an electrode assembly of reference and auxiliary electrodes, set along a cable. The reference electrodes may have an active coating of platinum group oxides.
israel atomic energy British Appl. 2,161,979A
A generator for short lived radionuclides, especially for producing 191mIr from 191Os, comprises a column of supported ion exchange agent loaded with the parent nuclide. 191 mIr is used in angiocardiography.
Fire Extinguishing and Explosion Suppression Systems
graviner ltd. British Appl. 2,164,251A
In a fire extinguishing or explosion suppression mixture, a CO removing substance comprises Pd or one of its salts, compounds or complexes, a mixture of Mn oxide and Cu oxide with a minor amount of Ag oxide, Pt, or a Pd sulphate/silicomolybdate complex.
High Surface Area Particles
plasma fusion inc. U.S. Patent 4,563,566
Porous high surface area particles especially catalysts of Pt, Pd or Ni are formed by agglomeration and fusing the grains in a plasma gun.
Assessing Selectivity of Hydrocarbon Dehydrogenation
ELECTRICAL AND ELECTRONIC ENGINEERING
Phase Delay Element Production
international standard electric corp. European Appl. 174,352A
On a Li niobate single crystal substrate there is applied an O-inert diffusion barrier in the form of a Pt layer in which there is etched a desired strip pattern structure. A Ti layer is applied over this before heating in an O2 atmosphere. Ti diffuses along the strip pattern structure and forms an optical channel where light is retarded by an electric field.
american tel. & teleg. co. World Patent Appl. 86/00461A
Electrical contacts of high hardness and good ductility comprise base metal carrying a Pd alloy composed of 30−60Pd, (70-b) to (40-b) X and 0.05−5 Y in wt.%, where X is Co and/or Cu and Y is one or more of Ru, Ir, W, B and Nb.
Sliding Contact with Brush and Commutator
tanaka k.k. Japanese Publ. Appl. 60/234,941
A contact consists of a brush of 30−50Au-20−40Ag-20−40Pd to which at least one of Al, Ga, Mn and Ni is added, and a commutator of Ag-Cu or Ag-Cu-Cd, where both have excellent wear resistance, less wear debris and less noise.
konishiroku photo k.k. Japanese Publ. Appl. 61/10,443
An electroconductive laminate used for displays, free of brightness and luminescence irregularities, is made of a transparent electroconductive film 200−9000 Å thick of Pt, Au, Cr, SnO2, etc., set on a base material, and onto the film is set a layer of material with good adhesion to polymers.
Cathode Ray Screen
Thermochemical Sensor Element
Platinum Anti-Tumour Complexes
shionogi k.k. European Appl. 166,366A
New Pt(IV) complexes have antibacterial activity and anti-tumour activity comparable to or more potent than that of cis-platin, with lower nephrotoxicity. They have high water solubility.
Microspheres for Labelling
yeda res. dev. co. ltd. European Appl. 167,834A
Polyaldehyde microspheres, to which a transition metal of Pt, Pd, Au, Ag, Te, Fe, Ni, or Co is bound, is optionally encapsulated in agarose, and optionally contains drugs or antibodies which are used for labelling and separating cells, in diagnostic assays, coating supports and catalysts.
Rhodium Anti-Cancer Compounds
johnson matthey p.l.c. European Appl. 171,984A
New Rh co-ordination compounds of composition [RhmXxY]a, where X is an anionic ligand, Y is a neutral ligand, and at least one of X and Y is a N donor ligand, are usful in combination modality cancer therapy with other forms of treatment, especially with irradiation where they act as radio-sensitisers.
Ruthenium Anti-Tumour Complexes
byk gulden lomberg World Patent Appl. 86/804A
New medicinal compounds containing trichloro- or tribromo-tris-N heterocyclyl-Ru complexes have tumour-inhibiting activity, especially against colorectal cancers, and favourable toxicity.
Nucleic Acid Base Detecting Device
hitachi k.k. Japanese Publ. Appl. 61/11,665
Separated nucleic acid fragments have elements not included in natural nucleic acids, such as Pt, Os, Au, Ag, Hg, S, Br, I, etc., introduced into the mixtures to form compounds which can then be detected by molecular weight fragment detection.
The New Patents abstracts have been prepared from material published by Derwent Publications Limited.