A dental filling composition comprising a polymerizable monomer and an inorganic filler, characterized in that the inorganic filler comprises (A) 20 to 80 % by weight of spherical inorganic oxide particles with an average particle size of from 1.0 to 5.0 .mu.m, and (B) 80 to 20 % by weight of spherical inorganic oxide particles which have a particle size range of at least 0.05 .mu.m and less than ...

Docket No.: 60SI-1465 of the Invention An aqueous composition for rendering masonry and wood surfaces water repellent is provided, comprising an aqueous mixture containing an alkali metal aminoorgano-funotional siliconate and at least one alkali metal organosiliconate.

The invention concerns an insulation board of mineral fibres provided with a coating which contains mineral particles bonded with slag alkali cement and optionally containing short fibres. The invention also concerns a process for the manufacture of such an insulation board an its use.

A screen cover is described for a cleaning insert (4) in a water regeneration device, the screen cover (5) having screen slots (7) on a conical surface section (6) and at least one venting aperture in the middle of a raised shoulder, and being capable of being connected to a hollow tube (10) with a disc (11). In order to improve the operation and handling of such a screen cover, particularly ...

ACIDIC DISINFECTANT ALL-PURPOSE LIQUID CLEANING COMPOSITION A stable, acidic disinfectant all-purpose liquid cleaning composition, free of detergent builders and substantially free of organic solvents, comprising a mixture of acid stable water-soluble and water-dispersible nonionic surfactants, organic acid and a water soluble, acid stable disinfectant compound in an aqueous medium. The compositio...

Vertical cells are constructed for landfills by excavating a deep narrow hole. The hole can be excavated below the water table lined with an impervious liner and used for storage of waste. Solid organic waste can be anaerobically fermented to methane and compost. The methane is collected by a central core shaft and perforated sleeve from the cell. When the methane has all been generated the compos...