THERMALLY STABLE THIOSULFATE HYDROXYETHYLCELLULOSE SUSPENSION A storage and thermally stable polymer suspension in fresh water remains pourable after mixing at 6 months comprises at least 30% ammonium or sodium thiosulfate and 20% hydroxyethylcellulose. In an oil drilling fluid, yield value decreases less than 35% when heated for 16 hours at 250'F.

Compounds having anti-tumour activity are disclosed having the formula wherein: (1) n is 2 or 3; R<1> and R<2> are independently lower-alkyl; Q is a residue chosen from the group consisting of CH2NHR<3>, CH2N(R<4>)SO2R<7>, CH2NHCHO, CH=N-Ar, C(O)NR<5>R<6>, CH2N(R<4>)C(O)R<7>, CH2N(C2H5)CHO, CH2N(R<4>)P(O)(O-lower-alkyl)2, CH2N=CH-N(R<9>)(R<10>), CH2N(R<4>)C(O)CF3 and CH2N(R<4>)C(O...

12 Preparation of halomethylbenzoyl cyanides and novel halomethylbenzoyl cyanides of the disclosure: A process for preparing halomethylbenzoyl cyanides I Ph-CO-CN I (Ph = phenyl radical substituted by chloromethyl or bromomethyl which, if desired, can additionally carry 1 - 4 further radicals) by reacting halomethylbenzoyl chlorides II Ph-CO-Cl II with an alkali metal cyanide or transition metal c...

1-¢¢Dialkylamino)alkyl!amino!-4-substituted-thioxanthen-9-ones of the formula: (wherein n is 2 or 3, R1 and R2 are alkyl, Q is CH2NHR3, CH2N(R4)SO2R7, CH2NHCHO, CH=N-Ar, CONR5R6, CH2NR4COR7, CH2N(C2H5)CHO, CH2NR4P(O)(O-alkyl)2, CH2N=CH-NR9R10, CH2NR4COCF3 or CH2NR4COOR7, R3 is H or alkyl, R4 is H, alkyl or Ar, R5 is H, alkyl or Ar, R6 is H or alkyl, R7 is alkyl or Ar, R8 is OH, H, alkyl or a...

An aqueous liquid detergent composition is provided for cleaning a hard surface and for repelling insects therefrom comprising a detersive proportion of a surface active detergent compound, an effective amount of at least one of certain defined insect repellent materials which is sufficient to repel insect from the hard surface after application of the detergent composition thereto, the liquid det...

A device for mounting a diaphragm (7) in a water supply pipe element (1), characterised in that it includes an internal flange (6) for accommodating the diaphragm (7), made inside the pipe element, the diaphragm being provided with a peripheral rim (9) for bearing against the flange (6), a diffuser (11) forming a spacer, applied by one of its ends against the diaphragm (6) and a diffuser support (...

A scanning optical rangefinder including an optical scanner and a light source. The optical scanner includes a rotating scan disc with a circular array of conave reflectors thereon. Mirrors are provided for directing light from the light source towards the concave reflectors on the rotating scan disc and then to direct light from the concave reflectors on the scan disc towards a target. Light rece...

Method for determining a dominant heart rate from a series of beat triggers representative of a mixed series of normal heart beats and nonarrhythmic actives, with the beat triggers being determined at a specific sampling rate defining sample intervals, comprising the steps of framing a window to include a portion of the series of beat triggers and to be beat-aligned with a first beat trigger and a...

A clean air fan filter module comprised of a fan shroud, a fan/motor mount, a centrifugal fan, a fan motor, and a HEPA filter, the fan shroud having an air inlet and two inclined ends, the fan/motor mounted below the air inlet on the fan/motor mount, the centrifugal fan blowing air radially towards the fan shroud, the HEPA filter constituting the air outlet.

A process for preparing L-(-)-carnitine is disclosed which comprises acylating D-(+)-carnitinenitrile or D-(+)-carnitinamide to their respective acylderivatives which via acid hydrolysis yield D-(+)-carnitine which is converted to the lactone of L-(-)-carnitine. The lactone in a basic environment yields L-(-)-carnitine inner salt.

A process for preparing L-(-)-carnitine is disclosed which comprises converting D-(+)-carnitinamide to an ester, acylating said ester, converting the ester group to carboxyl group thus obtaining D-(+)-carnitine, converting this latter compound to the lactone of L-(-)-carnitine which treated in a basic environment yields L-(-)-carnitine inner salt.

The dual-torsion twisting machine for threads with continuous filaments and in particular for natural silk, according to the invention, presents particular limits on its various dimensions, in particular the height, with respect to those of the known twisting machines, which make it possible to achieve optimal working conditions for the workers, with significant increase in productivity.

An intake manifold for use with a combustion engine is disclosed. The intake manifold comprises a dimensionally stable induction pipe body having at least one first flow-through opening and at least one first adjusting element arranged in the first flow-through opening to vary the available cross-sectional area of the passage. This adjusting element takes the form of a throttle valve, which is rot...

A die-cutting apparatus includes a die roll 12 and an anvil roll 14 having a cover (outer sleeve 22) on it. The die roll and anvil roll rotate about parallel axes, the position of the anvil roll axis being adjustable, for example by means of eccentric bearings, to compensate for a reduction in the diameter of the anvil roll following trimming of the cover. An encoder 88 is provided for sensing the...

A method and apparatus for recycling pure which is disgorged from a plastic injection molding machine. The apparatus has a hopper which is placed below the injection nozzle of an injection molding machine. Purge is released from the injection nozzle and falls into a hopper located on the apparatus. From the hopper the purge is drawn downward by two coacting compression rollers which have the dual ...

Process and device for the purification of waste water characterized in that it comprises first means 14 for filtering solids carried by the inflowing water located in a first sealed chamber 11, and then means 12.2 and 12.3 involving an electrochemical and/or electrokinetic process for the de-emulsifying and aggregation of substances dissolved in the said waters placed in a second sealed chamber ...

The device has a first lamina (19) and a second lamina (23) that are arranged opposite one another and are supported by pairs of fixed (20) and respectively movable bars (24) that engage the ends of the respective laminae, flexing them in an arched shape; the laminae are arranged opposite each other at their convex face. The movable bars (24) are supported by a corresponding movable element (26) w...

An extrusion tool A having an extrusion rod which can move in and out 32 of the latter by means of a threaded coupling 321 with motorised rotating bush 31, in co- operation with guide grooves 322 which prevent its rotation on a lengthwise guide bush 33-7, characterised in that said guide bush 33-7 has a clutch 4, 5, 6, 7, 8, which prevents the rotation of said extrusion rod 32 and enables this in ...

This invention relates to a modular radiating element for the construction of assemblable radiators for thermal siphon systems comprising a tube bundle consisting of one or more tubes alongside each other in parallel, to the ends of which shaped plates containing holes of cross section corresponding to that of the tubes are welded at their ends and which are in turn welded to the openings of corre...