The treatment of freshly produced open-cell phenolic resin foams in a high-frequency field enables very rapid removal of the blowing agent remaining in the pores and of the retained formaldehyde to be carried out. The treatment replaces the time-consuming airing of the phenolic resin foam which was necessary hitherto in order to achieve a good water absorption rate and water absorption capacity. D...

Disclosed is a process for purifying an impure anthracyclinone glycoside by selective adsorption of a slightly acidic aqueous solution of an impure glycoside on at least one resin and subsequent de-absorption of the purified glycoside by elution with acidic water or a mixture of water and a polar solvent.

Disclosed is a process for purifying an impure anthracyclinone glycoside by selective adsorption of a slightly acidic aqueous solution of an impure glycoside on at least one resin and subsequent de-absorption of the purified glycoside by elution with acidic water or a mixture of water and a polar solvent.

Disclosed is a process for purifying an impure anthracyclinone glycoside by selective adsorption of a slightly acidic aqueous solution of an impure glycoside on at least one resin and subsequent de-absorption of the purified glycoside by elution with acidic water or a mixture of water and a polar solvent.

Disclosed is a process for purifying an impure anthracyclinone glycoside by selective adsorption of a slightly acidic aqueous solution of an impure glycoside on at least one resin and subsequent de-absorption of the purified glycoside by elution with acidic water or a mixture of water and a polar solvent.

A transparent layer of tin oxide is deposited on the surface of a substrate made of glass, ceramic, metal or other substances. The process consists in bringing the vapour obtained by heating monobutyltin trichloride, mixed or unmixed with another compound in the gaseous state, such as dichlorodifluoromethane, into contact with a substrate heated to high temperature. Application in the field of tra...

The invention relates to a cavity A for microwave ovens, which have a front F that surrounds an access opening to the cavity. The opening is closed by a flap B which interacts with the oven front F so that when the flap is closed a gap, which is delimited on the one side by the oven front and on the other side by the outer parts of the flap B, is formed from the inside of the cavity A to the space...

Heating apparatus consists of a shallow circular tray (1) having a layer (2) of thermally insulative material disposed therewithin and supporting a number of infra-red-emitting, tunsten-halogen lamps (7) on flanges (3,4), beneath a glass ceramic cooktop. A moulding (8) of ceramic fibre material is press-fitted around the ends of the lamps (7) and a thermal limiter (11) is provided to limit the ope...

A relatively simple inverter-motor system, comprising a minimum number of circuit components, is provided by employing a voltage-controlled thyristor inverter which in turn drives a synchronous motor having a leading power factor. With the motor current leading the motor voltage, the thyristor switching devices will be motor-commutated, thereby precluding the need for any auxiliary commutating ele...

No further information available at time of publication.

No further information available at time of publication.

The invention refers to a bearing (4) divisible in two bearing-halves (5, 6) that is designed to surround a rotating bearing (4) mounted axle or similar. On at least one of the division surfaces (13) the bearing-halves (5, 6) are shaped with surfaces directed toward each other (14-17). With the intention of eliminating the previous need for precision worked bolts and holes and/or guide pins for fi...

Waste water enters a mechanical course sepn. arrangement and then passes through a sedimentation basin where it is treated with chemicals to bring about flocculation, sedimentation and possibly biological cleaning. Sludge can be removed from the bottom of the basin and collected.

A grating drum, especially for grating potatoes, which has axial tracks (2) along its periphery wherein the grater wires (4) sticking out from the drum periphery are anchored. The grater wires(4) are positioned on a retaining wire (5) running along the track (2) and the assembly formed by the grater wires (4) and retaining wire (5) is held in its respective track (2) by strips (6,7) that insert in...

The protective article of clothing, partic. for children, has a flexible cover (10), and a semi-stiff, transparent hood (12). An air supply channel (13) forming a back support plate is made of porous rubber or plastics, and issues into the hood above the head of the wearer and extends downwards along the back of the wearer. An air filter (21) is inserted in the channel (13) between its mouth (15) ...

A process and a device for reducing the ignition and fire risk when producing hydrogen peroxide according to the anthraquinone method is described. During the anthraquinone method an anthrahydroquinone derivative is oxidized by means of an oxygenous gas. With the described process supply of the oxygenous gas is automatically broken when light or heat radiation from either the place where the oxyge...

CANADIAN PATENT APPLICATION OF BENGT GUSTAF FRANZ?N FOR PROCESS IN THE SEPARATION OF CATALYST PARTICLES SUSPENDED IN LIQUID A process in the separation of solid catalyst particles suspended in liquid is described. After passage of a reaction chamber, the liquid is caused to pass through one or more filters retaining the suspended catalyst particles in the reaction chamber. The filter is periodical...

A process and an apparatus in the separation of solid catalyst particles suspended in liquid are described. After passage of a reaction chamber, the liquid is caused to pass through one or more filters retaining the suspended catalyst particles in the reaction chamber. The filter is periodically cleaned from deposits by backwashing which is carried out by means of a liquid under a pressure which i...

A scratch protection lining, which is electrically insulated, is pliantly applied to an underlay, and partially covers the sheet conductor. This permits contact between the urine and the sheet along the whole length of the latter.

A collapsible wheelchair, which is designed for easy folding into a flat package, good seating comfort and assured adjustability.The wheelchair involves two preferably level rigid frame parts across the width of the chair, namely a rear section (1) in which the wheelchair's two wheel pairs (4, 5) are fixed and a back support part (2) which at its lower end is connected by joints (16) to the rear s...