To trimerise acetylene and acetylene compounds to give benzene or the corresponding benzene derivatives, acetylene or acetylene compounds are reacted at a temperature of 20 to 120 DEG C with the aid of a catalyst composed of tetrakis(triphenyl phosphite)nickel(0) and at least one other phosphite compound. The reaction is optionally carried out in a solvent.

This sofabed comprises a framework 6 at the front and top end of which is articulated a first frame 10 having dimensions corresponding to those of the framework, one face of which is used to support the cushions of the seat part and the other face of which is used to support a part of the mattress. The other part of the mattress is fixed to a second frame 15 in two parts 16 and 17 articulated to e...

A visually guided vehicle 1, such as a fork-lift truck, has a camera tube 3, such as an industrial television camera, and a controller 5 for controlling the automatic running apparatus 4 of the vehicle. Two reflectors M1 and M2 are disposed in front of the camera tube 3 so that the camera tube 3 may receive light from remote A and near B visual fields. A guide belt (2) laid on floor for guiding th...

Polyester fiberfill having spiral crimp that is randomly-arranged and entangled in the form of fiberballs with binder fibers, preferably with a minimum of hairs extending from the surface of the fiberballs, so as to be air-transportable on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill/binder/blend agains...

PURPOSE:To make it possible to detect an accurate voltage which does not include contact resistance between strands or between stranded wires in the lower order and connection resistance in normal conduction, by attaching voltage taps to the same superconducting strand or to the stranded wire in the lower order, which forms an electrically unitary body. CONSTITUTION:Superconducting strands or lowe...

The invention provides an additive-containing polyolefin having an inner bead of a first polyolefin and an outer adherent coating of a second polyolefin encapsulating the additive.

Coating of moulded articles made of synthetic resin by dipping in a solution containing 5 to 15 % of paint (calculated as solids content) in an organic solvent. Application: bumpers for motor vehicles. ;

REVETEMENT DE PIECES EN RESINE SYNTHETIQUE MOULEES PAR TREMPAGE DANS UNE SOLUTION CONTENANT 5 A 15 DE PEINTURE (CALCULE EN EXTRAIT SEC) DANS UN SOLVANT ORGANIQUE.

APPLICATION : PA...

The process involves the use of an additive consisting of an alkali metal or alkaline-earth metal metaborate. Manufacture of creep-free prepegs by using solutions of phenolic resins and reinforcements: glass fibres, carbon fabric.

Polyester fiberfill having spiral crimp that is randomly-arranged and entangled in the form of fiberballs with binder fibers, preferably with a minimum of hairs extending from the surface of the fiberballs, so as to be air-transportable on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill/binder/blend agains...

Blends of polyester fiberfill and binder fiber, wherein the fiberfill is coated with a hydrophilic poly(alkylene oxide) type finish that cures on to the polyester fibers and so provides improved properties in the eventual bonded product, including combinations of improved durability, soft hand, good bonding, reduced flammability and improved moisture transport.

Blends of polyester fiberfill and binder fiber, wherein the fiberfill is coated with a hydrophilic poly(alkylene oxide) type finish that cures on to the polyester fibers and so provides improved properties in the eventual bonded product, including combinations of improved durability, soft hand, good bonding, reduced flammability and improved moisture transport.

Polyester fiberfill having spiral crimp that is randomly-arranged and entangled in the form of fiberballs with binder fibers, preferably with a minimum of hairs extending from the surface of the fiberballs, so as to be air-transportable on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill/binder/blend agains...

A take-up strip is applied to the element to be investigated, (for example the skin or the hair of a living subject), for a given time and with a given pressure; the side of this strip intended to come into contact with the element to be investigated is matt; the quantity of light reflected by the matt side of the strip is measured before and after impregnation with the greasy product: the quantit...

Device for selective radiation metering in sun-tanning apparatuses for professional use, characterised in that it has two separate sources for the said radiation, 1 and 2, the ones seen at 2, emit U.V. radiation in the 280-315 nanometer range, and the others, seen at 1, emit in the 340 nanometer range. The 340 nanometer range is completely safe, whereas the 280-315 nanometer range is more active, ...

The invention relates to a crusher of the type comprising a chute 16 for feeding material to be crushed, rotary crushing means 24-24' and an enclosure 27 for collecting the crushed material, the whole unit being submerged in a liquid medium. According to the invention, the crusher furthermore comprises means 40, 46 for the recirculation of the liquid medium located in the collection enclosure towa...

PURPOSE:To allow a wide range of room unit types from which a desired selection can be made so that room units which have functions that meet the needs of users may be installed by selectively installing outside units in accordance with the types of room units in an outside units installation space inside the outside system main body. CONSTITUTION:Outside controllers 26, 44, 56, 65 for first, seco...