Aqueous silica sol stabilised against freezing, containing 25 to 50% by weight of SiO2 and 2 to 10% by weight of urea and/or urea derivatives of the general formula in which X and Y can be an NH2 or NHR group, and R denotes an alkyl radical having 1 to 4 carbon atoms, and its use in phosphate-based investments in dental technology.

The invention provides dental composite compositions formed by mixing a curable liquid composition with a powder in preselected proportions. The composite compositions formed are useful as cement, liner, base, restorative, pit and fissure sealants, and/or core build-up material, etc. having improved adhesion to dentin. These composite compositions include polyalkenoic acid, filler which provides e...

Process for manufacturing needled spunbondeds from thermoplastic fibers wherein, prior to the needling, the as-spun web is thermally sealed at the surfaces and provided with a lubricant.

The invention relates to a method and the relevant devices for controlling the unloading functions in sorting plants of the kind comprising a plurality of carriages, each of which is provided with a revolving belt (12) suitable to move orthogonally to the direction of feed in order to effect the unloading of the items, wherein one acts upon the belt acceleration during the unloading stage, in orde...

An apparatus for recovery of a solvent gas involved in the drying of goods treated with an organic solvent with the aid of an air stream in a dry-cleaning machine. In this machine the goods are dried by an air flow circulating in a closed circulation loop which is heated before contact with the goods and after contact is again cooled for condensation of solvent vapor. In a second stage of the reco...

2129431 9316532 PCTABS00025 A SCADA communication and control system is used for controlling power distribution. The system includes a master controller, a master radio and a plurality of remote terminal units (RTUs). A communication link between the master controller (12) and the master radio (14) has two channels. A first channel is for sending master controller messages to the master radio (14)...

The present invention provides novel tetrazole derivatives useful as excitatory amino acid receptor antagonists and in treating a variety of associated nervous system disorders.

60SI-1399 There is disclosed a novel process for the production of liquid copolymers having R3SiO0.5 units and SiO2 units by a hydrolyzation reaction in aliphatic hydrocarbon solvents having from 6 to 15 carbon atoms.

In an input cell policing method in a network of an asynchronous transfer mode, according to information contained in a header field of each input cell, a group to which the cell belongs is identified. For each group, there are set a plurality of time frames having a predetermined length and mutually different phases to count the number of input cells in each time frame period. For each time frame...

The new complexes of bismuth or antimony halides with amines having formula: R.(MeX3)y, where R is dicyandiamide, guanamine, 2-guanidinobenzoimidazole, isophorondiamine, melamine, piperazine or a compound containing from 2 to 9 triazino-rings condensed or linked to each other through at least a -NH- group; Me is Bi or Sb X is chlorine or bromine y is a number from 0.3 to 4, are suitable as fla...

PCT No. PCT/SE93/00093 Sec. 371 Date Jul. 22, 1994 Sec. 102(e) Date Jul. 22, 1994 PCT Filed Feb. 5, 1993 PCT Pub. No. WO93/16346 PCT Pub. Date Aug. 19, 1993.A heat exchanger having plastic channel plates (10) is manufactured by stacking the plates with intermediate spacer members. The channel plates comprise two outer walls (12, 14) which are interconnected by a plurality of intermediate walls (16...

PCT No. PCT/SE93/00093 Sec. 371 Date Jul. 22, 1994 Sec. 102(e) Date Jul. 22, 1994 PCT Filed Feb. 5, 1993 PCT Pub. No. WO93/16346 PCT Pub. Date Aug. 19, 1993.A heat exchanger having plastic channel plates (10) is manufactured by stacking the plates with intermediate spacer members. The channel plates comprise two outer walls (12, 14) which are interconnected by a plurality of intermediate walls (16...

A portable unit (101) may both place and receive calls in both the cordless (115) and cellular (103) telephone system. A portable unit (101), in combination with a cordless base station (115), can automatically route an incoming call to the telephone system in which the portable unit (101) is located without inconveniencing the user. Additionally, the portable unit (101), in combination with the c...