A suspension of an aqueous solution of a water-soluble polymer in an organic liquid forming a continuous organic phase, said suspension containing, as an emulsifier, a mixture of two copolymers which are similar but differ in their content of basic nitrogen by 0.1 to 1.5 percentage points.

Very low molecular weight carboxymethylhydroxyethylcellulose polymers are used as additives for salt water cement slurries to lower the water loss therefrom when in contact with water permeable earth formations. The additives may also include hydroxycarboxy acids. The cellulose derivative has a DS of 0.1-0.7 (carboxymethyl), a molar ratio of ethylene oxide to anhydroglucose units of 0.6-2.8 and a ...

An optical head of the present invention is provided with an optical system including an objective lens, and a photodetector. A laser beam incident on the objective lens is converged thereby and projected on a light-reflecting layer. The laser beam reflected by the light-reflecting layer is transferred to a light receiving surface of the photodetector through the optical system including the objec...

A process for producing a highly expanded polypropylene foam which is uniform in viscosity during extrusion foaming, improved in melt strength and free from unevenness of surface by using a polypropylene resin having a specified melt tension.

A coating composition for polypropylene resins is disclosed principally comprising a chlorinated polyolefin (I) obtained by chlorinating, to a degree within a range from 10 to 50 wt%, a polyolefin which is modified with one or two or more kinds of compounds selected from unsaturated polybasic carboxylic acids and their acid anhydrides and is of a saponification value between 6 and 60; and a compou...

Process for the production of synthesis gas with an increased H2/CO-ratio from normally gaseous hydrocarbons comprising the following steps: a) at least one normally gaseous hydrocarbon is converted into a synthesis gas comprising H2 and CO by partial oxidation with an oxygen-containing gas; b) at least one normally gaseous hydrocarbon is converted with steam into a gaseous mixture comprising H2 a...

25 A PROCESS FOR FORMING FLAT PLATE BALLISTIC RESISTANT MATERIALS The present invention discloses a process for forming flat plate ballistic resistant composites which comprises impregnating a low-alkali magnesia-aluminum-silicate glass fiber woven roving with an impregnating composition. The impregnating composition comprises a resin solution of a polyester resin in a polymerizable monomeric solv...

In a gas turbine the quantity of cooling air required to cool the turbine (3) is reduced by the evaporative cooling of air bled from the compressor discharge for cooling purposes (34). The evaporative cooling is accomplished by spraying pressurized water (37) into a bleed pipe (23) which diverts the cooling air from the compressor discharge to the turbine (3).

Aesthetically attractive, free standing dispensers for the controlled release of volatile liquid materials such as perfumes and fragrances into the atmosphere consist essentially of composite hydrogels comprising a continuous phase of a solubilized polyvinyl alcohol, a dispersed phase comprising a polyelectrolyte and an aqueous solution of the volatile liquid that is distributed between said conti...

An asymetric membrane which comprises an at least partially crystalline aromatic ether ketone polymer may be prepared by contacting a solution of the polymer in a strong acid in a suitable shape with a non-solvent for the polymer.

Blends of a major portion of ethylene vinyl alcohol copolymer (EVOH) and a minor portion of an amorphous polyamide and preferably also a semicrystalline nylon are disclosed. These blends may be formed into films or multilayer structures, which can be thermoformed into containers or other articles. The presence of the minor portion of amorphous polyamide permits thermoforming of the EVOH at lower t...

A particulate composite having a continuous phase of a metal such as an Al alloy and a disperse phase, incorporated in the continuous phase, of a refractory material such as SiC. The composite is made by atomising a stream (12) of the Al alloy to form a spray (22) of metal droplets, and applying fine refractory material (24) to the stream or spray. The resulting particulate composite may be consol...

Dispersions of hydrophobic substance eg resin emulsions, usually having a relatively low average particle size can be continuously and speedily prepared by feed a hydrophobic substance in the liquid state into at least two static mixers, arranged in a series. The resin is introduced at a temperature above 50 degrees C but below its degradation temperature of hydrophobic substance and water under p...

Cellular cellulosic wiping material consisting of a cellular cellulosic substrate coated on at least one of its faces with an expanded latex foam obtained from an aqueous latex composition which has a viscosity, measured at 20 DEG C and 65 % humidity, of between 2500 and 3500 mPa s and whose foam density is between 250 and 400 g/l. Application: absorbent and wiping material for cleaning.

The self-regulating speed converter consists of two or more planetary gears. It has two or more driven shafts (10,12). The torques of the two or more driven shafts (10,12) automatically and continuously compensate the planetary wheel (3,7) axles, in the case of bevel gears, or compensate the speeds in the case of the spur wheel design. USE/ADVANTAGE - The self-regulating speed converter loads the ...

A cold rolling mill lubricant for steel sheets, contains a monoester oil represented by general formula (A): R1COO-(R2-O)n-R3 (Wherein R1 is an alkyl, alkenyl, hydroxyalkyl, or hydroxyalkenyl group having 7 or more carbon atoms, R2 is an alkylene group, R3 is an alkyl or phenyl group, and n is an integer of 1 to 5), and/or a diester oil represented by general formula (B): (wherein each R...

In a device for cleaning pipelines (1), there is a four-way change-over valve (2) to whose inlet connection (5) a pressure limiting valve (3) is connected. Its valve connector can project as far as the valve openings (11, 12) of the piston (8). The pressure limiting valve (3) relieves pressure towards the outlet connection (6). In this way, pressure surges in the device (1) can be reduced and dama...

The present invention relates to a method and a device for forward and backward rinsing and for cleaning and for raising, regulating and stabilising the pressures in piping systems with simultaneous water preparation. For this purpose, it is proposed to connect the beginning and end regions of the pipe system to pressure accumulators (diaphragm pressure vessels, air domes or the like) and to conve...

An improved efficiency arcjet thruster has a constrictor and electrically-conductive nozzle anode defining an arc chamber, and an electrically-conductive rod having a tip spaced upstream from the constrictor and defining a cathode spaced from the anode by a gap generally coextensive with the arc chamber. An electrical potential is applied to the anode and cathode to generate an electrical arc in t...

The carrying arm (13) is connected fixed to the top end of a supporting lever (10). A guide piece (8) runs in an elongated hole (9) in the longitudinal direction of the supporting lever (10), secured at a locally fixed trunnion (7) and linked across a lever (11) located to allow rotation at the lower end of the lever (10). The arm can be raised, lowered and swivelled. The carrying arm (13) and the...