Abstract: An antimicrobial composition for topical use or for incorporation into a coating or structural composition comprises an antimicrobial silver compound, preferably silver chloride, deposited on a physiologically inert oxidic synthetic particulate support material. A preferred support material is titania containing one or more of the crystalline forms anatase, rutile, and brookite.

Abstract: An antimicrobial composition for topical use or for incorporation into a coating or structural composition comprises an antimicrobial silver compound, preferably silver chloride, deposited on a physiologically inert oxidic synthetic particulate support material in particulate form. A preferred support material is titania containing one or more of the crystalline forms anatase, rutile, and brookite.

Abstract: An antimicrobial composition which includes silver as the antimicrobial agent also includes a hydratable or hydrated oxide as a promoter to enhance the antimicrobial effect. Such compositions may be used to coat appliances such as catheters or may be incorporated in bone cements.

Abstract: This invention relates to platinum group metal-containing alloys and to uses of such alloys. In particular, the invention relates to platinum group metal-containing superalloys and to their uses. In particular, superalloys according to the present invention consist apart from impurities, of:(a) 5 to 25 wt % chromium,(b) 2 to 7 wt % aluminium,(c) 0.5 to 5 wt % titanium,(d) at least one of the metals yttrium and scandium present in a total amount of 0101 to 3 wt %,(e) 3 to 15 wt % in total of one or more of the platinum group metals platinum, palladium, rhodium, iridium, osmium and ruthenium and(f) balance nickel.

Abstract: This invention relates to catalysts suitable for the catalytic oxidation of hydrocarbons and carbon monoxide and for the catalytic reduction of oxides of nitrogen in the presence, respectively, of suitable oxidizing and reducing means. The invention is especially concerned with catalysts which are suitable for the catalytic purification or control of the exhaust gases of petrol driven internal combustion engines and of diesel engines. Such catalysts have been variously described as "three-way", "polyfunctional" and "multi-functional" catalysts. In more detail a three way catalyst of the invention comprises a substrate having supported thereon at least one intermetallic compound of the general formula A.sub.x B.sub.y where A represents one or more Groups VIII metals having an atomic number not larger than 78; B represents one or more metals of the group consisting of Al, Sc, Y, the lanthanides, Ti, Zr, Hf, V, Nb and Ta and x and y are integers.