In a process for producing rigid foams based on isocyanate, the blowing agent used is a mixture of at least one low-boiling hydrocarbon having from 3 to 7 carbon atoms, low molecular weight monohydric alcohols containing primary or secondary hydroxyl groups and having from 1 to 4 carbon atoms, and, if desired, the carbon dioxide formed from water and isocyanate. The rigid foams can be used as insu...

Elastomeric particles, which have a tendency to agglomerate, are rendered non-agglomerating by contacting those particles with a molten thermoplastic resin, and then cooling the particles to a temperature below the melting or softening point of the thermoplastic resin.

The present invention relates to thermoplastically formable composite materials of reinforcing fibres in a polyamide 12 matrix, characterized in that the polyamide 12 matrix consists of anionically polymerized lauryllactam maximally containing 15 weight-% of co-monomers and optionally additives which are determined on the basis of production, processing and use. The invention furthermore relates t...

A method of providing a tin oxide coating on a moving flat or float glass substrate by chemical vapour deposition by pre-mixing gaseous streams of tin tetrachloride and water at a temperature of between 100.degree.C and 240.degree.C and directing the unitary pre-mixed stream against the glass in substantially laminar flow, the tin tetrachloride and the water only reacting in the region of the surf...

Continuous non-woven heating comprises: (i) moving at a uniform speed through a thermal treatment station where a gas stream of predetermined velocity and temperature passes through it to pre-heat it; (ii) mechanically treating; and (iii) using the gas velocity and temperature and the treatment length so that at all treatment speeds including zero speed the melting point of the filaments and/or fi...

Folded printed products are conveyed in a first imbricated formation up to a stop by a first conveying device. In the first imbricated formation each printed product rests on the following printed product with its leading bottom edge formed by its folded edge. At the stacking location formed by the stop, the printed products are stacked up in layers to form an intermediate stack. The uppermost pri...

The present invention is a method of removing impurities from raw gold comprising the step of exposing the raw gold to a leach liquor. The leach liquor is selected to dissolve the impurities from the raw gold without dissolving a significant amount of the gold metal. Preferably, the leach liquor is a solution having a highly acidic dissociation constant, a high oxidative potential and a high tende...

The signal received in a CDMA system is sampled at a rate greater than the chip rate of the spreading sequences. In order to assign the propagation delays to the arms of a rake receiver, consecutive delays are tested within a time window by evaluating, for each delay tested, an energy of the correlation between the signal received and a reference spreading sequence to which said tested delay is ap...

There is disclosed an image transmission system for transmitting MPEG data through a transmission path, capable of setting frames for the MPEG data to be transmitted, according to the traffic in the transmission path, and effecting an accounting process with a charge system corresponding to thus set frames.

Disclosed herein is a fuel pump comprising a housing including therein a high pressure fuel chamber, a fuel outlet valve communicating with the high pressure fuel chamber and being operable to prevent fuel inflow and to permit fuel outflow when the fuel pressure is above a predetermined level, a fuel inlet valve communicating with the high pressure chamber and being operable to prevent fuel outflo...

It is provided a non-aqueous electrolyte comprising a non-aqueous solvent and a lithium salt, said non-aqueous electrolyte containing a halogen-substituted ether compound represented by the general formula ¢I!: R1-O-R2 ¢I! (wherein R1 is an alkyl or halogen-substituted alkyl group having 2 or less carbon atoms and R2 is a halogen-substituted alkyl group having 2 to 10 carbon atoms) and at least on...

A folding highchair comprises a seat (11) and a supporting frame supporting the seat. The frame comprises legs (12, 13) which are movable caliper-fashion between an open position and a closed position. A pedal (36) is disposed close to a lower end of the legs to operate the release of means (22) for holding the legs in the open position, so as to enable the movement of the legs towards the closed ...

A system for applying accurately metered, minute quantities of concentrated additives from bulk sources of supply to successive masses of material presented for treatment includes a pass-through chamber within which separate streams of a liquid carrier and the additive substance are merged together. As the liquid carrier passes through the chamber, the additive, in either dry or liquid form, is li...