The present invention comprises a process for the asymmetric synthesis of florfenicol, thiamphenicol or chloramphenicol, from a derivative of trans-cinnamic acid, comprising the steps: (a) converting the acid to an acid chloride using a chlorinating agent, and reducing the acid chloride to a trans allylic alcohol with a reducing agent; (b) asymmetrically epoxidizing the allylic alcohol of step (a)...

The present invention comprises a process for the asymmetric synthesis of florfenicol, thiamphenicol or chloramphenicol, from a derivative of trans-cinnamic acid, comprising the steps: (a) converting the acid to an acid chloride using a chlorinating agent, and reducing the acid chloride to a trans allylic alcohol with a reducing agent; (b) asymmetrically epoxidizing the allylic alcohol of step (a)...

The efficiency of producing liquid products from a cryogenic air separation process using a distillation column system having at least a high pressure distillation column (902) and a low pressure distillation column (904) in thermal communication with each other and in which system the low pressure column (904) operates at a pressure of 60 to 520 kPag (9 to 75 psig) and at least 50% of the feed ai...

Improved gasoline compositions containing a minor amount of a polyalphaolefin having a viscosity at 100 DEG C from 2 to 20 centistokes, and optionally also an aliphatic polyamine, an alkali or alkaline earth metal salt of a succinic acid derivative, and/or a polyolefin; together with a concentrate for the production of such gasoline composition and a method of operating a spark-ignition engine usi...

PCT No. PCT/EP93/02270 Sec. 371 Date Mar. 15, 1995 Sec. 102(e) Date Mar. 15, 1995 PCT Filed Aug. 24, 1993 PCT Pub. No. WO94/04600 PCT Pub. Date Mar. 3, 1994.There is provided a method for preparing biodegradable films from plant-based raw materials in the form of carbohydrates which method is continuous and carried out in one step. In the process the plant-based raw materials are modified and plas...

The invention relates to an electrical connector for transmitting electrical signals between the outside and the inside of a well having a well head (20) terminated by a valve assembly (10). The connector comprises at least two inductively coupled electrical coils (1A, 1B; 5A, 5B) whose respective winding axes are aligned with the axis (zz') of the well head. The coils are integrated in the fluid ...

A thermoformable polyaryletherketone sheet of a thickness of about 625-5000 micrometers, having repeating units derived from diphenyl ether and terephthalyl and isophthalyl groups, especially a polyetherketoneketone in which the terephthalyl to isophthalyl isomer ratio is about 70:30 to 0:100, especially 60:40 to 50:50, which thermoformable sheet has a crystallinity of 5% of less, can be fabricate...

In the case of a process for manufacturing a window (glazing) made of laminated glass including one or more wires (4) which are arranged within a thermoplastic interlayer and are electrically connected to busbars (3), the wires (4) are heated by application of suitable energy, limited locally, at the connection points, before electrical connection to the busbars (3), in such a way that the surface...

A method of deactivating electromagnetic detection labels comprising a resonant circuit, in which an interrogation field is generated, the frequency of which is varied through a frequency range comprising the resonant frequency of the resonant circuit of the detection label, and in which a label is deactivated with an amplified interrogation field. According to the invention, the frequency of the ...

A continuous ink refill system for an ink jet printer that uses disposable ink jet cartridges having a first predetermined ink capacity includes an ink reservoir that is external to a print carriage on which the disposable ink jet cartridges are mounted. The ink reservoir contains a second predetermined ink capacity that continuously refills an ink container within the disposable ink jet cartridge...

To avoid a spinning cycle during the presence of braking foam in the tub, it is proposed to supply to the control circuit of the washing machine during a spinning phase a signal which is a measure of an undesirable braking of the laundry drum (for example, as a result of foam formation) and which is determined by the ratio of the following parameters of the operation of the drive motor to one anot...

There is disclosed a method for making colored hydrophilic contact lenses. A contact lens constructed of hydrophilic polymer that is substantially devoid of the functional groups -COOH, -OH, -NH-R, wherein R is hydrogen or C1 to C8 alkyl, -NCO and epoxy is provided. At least a portion of the surface of the lens is coated with a color coat comprising at least one pigment, binding polymer having fun...

In a video signal gradation corrector used in a television receiver, an output of a look-up table memory (11) is supplied to a constant-multiplication circuit (31), an output signal of the constant-multiplication circuit (31) and an output signal of a look-up table operating circuit (10) are added by an adder (32), and the result of addition is set into the look-up table memory (11). Further, a vi...

In a gradation corrector used in a television receiver, a clipping circuit (51) is connected to an output of a histogram memory (2) and a clipping level of the clipping circuit (51) is changed in accordance with an output of an S/N detecting circuit (50). Thereby, when the minimum value is detected, it is possible to prevent a large variation of the value to be detected which may be caused from no...

A apparatus for simultaneously preheating cullet and removing pollutants from glass furnace gases is disclosed. Raw moist cullet having fine glass dust material and other impurities adhered to its surface is heated by furnace gases which remove the moisture and the impurities by entrainment. The dry, clean cullet is then electrically charged and used to filter the exhaust gases which have been ele...

A apparatus for simultaneously preheating cullet and removing pollutants from glass furnace gases is disclosed. Raw moist cullet having fine glass dust material and other impurities adhered to its surface is heated by furnace gases which remove the moisture and the impurities by entrainment. The dry, clean cullet is then electrically charged and used to filter the exhaust gases which have been ele...

PURPOSE:To stably produce the water permeable concrete block which is formed by using cement as a binder and has specified water permeation performance and to provide the concrete block which has a flat surface to assure easy walking, has the large exposing area of aggregate to this surface and has good appearance. CONSTITUTION:The surface 1a side of the water permeable concrete block 1 formed by ...

A package for reconstituting a frozen foodstuff, such as a pot pie, formed from a precooked, lossy material filler food (60) having a preselected depth and covered with a layer of uncooked dough (80) which comprises a dish-shaped receptacle (10) formed of a microwave impervious material with a cavity (40) for the foodstuff and a peripheral rim (50) whereby the filler material within the cavity is ...

The invention relates to a process for the preparation of water soluble primycin and to the separation of its components of formulae (A1) and (A3) either as single components or as a mixture of the two components. According to the invention: (i) water insoluble primycin is reacted in a C1-3 alcohol with a condensable substance comprising a C-C-C bridge in the presence of sodium or potassium methox...

PCT No. PCT/SE96/00696 Sec. 371 Date Dec. 16, 1997 Sec. 102(e) Date Dec. 16, 1997 PCT Filed May 30, 1996 PCT Pub. No. WO96/41762 PCT Pub. Date Dec. 27, 1996A tool for assembly on a drum to form a rotatable unit, to be placed in journalling equipment for rotation of the unit, is provided. The drum comprises a cylindrical sleeve and two end pieces and is designed to carry a coil of a flexible object...