A process for the production of cellular polyurethanes by reacting a) at least one organic and/or modified organic polyisocyanate, b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, if desired c) low-molecular-weight chain extenders and/or crosslinking agents, in the presence of d) blowing agents, e) catalysts, and, if desired, f) auxiliaries...

A biodegradable, structured shaped product having good flexibility or rigidity properties is provided by extruding starch having a relatively large defined particle size and preferably containing a nucleating agent. The invention is also directed to a biodegradable, water dispersible shaped core product useful in winding or rolling and storage of paper goods which is provided by extruding starch w...

The present invention provides dispersant viscosity index improving additives for lubricating oils. The additives are copolymers comprising from 92 weight percent to 98 weight percent of a polymer backbone and from 2 weight percent to 8 weight percent branches grafted onto the polymer backbone.

An atomizer including a gas exit, an outlet adjacent the gas exit, and a deflector for deflecting gas issuing from the gas exit over the outlet for drawing a substance to be atomized out from one outlet and atomizing the substance in the gas issuing from the gas exit characterised in that the deflector is movable between a first position in the path of the gas issuing from the gas exit for atomiza...

A process for producing a filter element having a hollow body composed of thermoplastic synthetic fibers and having each of its end surfaces sealed, which process comprises placing on a hot plate (5), provided with a layer of a thermally conductive and releasing surface material (6), in succession, a thermoplastic sheet (7) and a filter element (4) so that an end surface of the filter element cont...

Disclosed herein is a foamable, self-setting ceramic composition which can be poured into molds or injection-molded or extruded to achieve desired shapes, and thereafter optionally fired to produce shaped, porous ceramic articles useful as filter elements, insulation, kiln furniture, molds, furnace linings, building blocks, or other like articles, the composition containing agents capable of devel...

A method of producing powder cement includes the steps of: primarily grinding powder which is mixed of cement clinker and slag and/or gypsum; primarily dividing the ground powder into fine powder and coarse powder; collecting the fine powder; secondarily dividing the collected fine powder and a final product of fine powder and coarse powder obtained from a secondary grinding step; and grinding the...

A plasticization apparatus is positioned between a suspension type pre-heater for pre-heating granular or powdered raw material of cement, etc. and a rotary plasticizer furnace for plasticizing decarboxylated raw material with the purpose of producing clinker. The apparatus inflows hot air for combustion from a cooler, and burns fuel separately with the rotary plasticizer furnace, to decarboxylate...

The quick setting agent for shotcrete is prepared by (a) mixing calcium oxide, sodium oxide and alumina from aluminate alkali metallic salts, carbonate of alkaline metals, calcium carbonate, aluminum hydroxide and aluminum oxide, (b) adding 5-15 wt% fluorine compounds such as CaF2, Na2SiF6, MgSiF6, K2SiF6 or CaSiF6 and 2-10 wt% anhydrous gypsum to this mixed powder, (c) firing this mixture at 1,20...

The blue color artificial stone using waste slag is manufactured by (a) mixing 36-40.5 wt% silica sand, 8-9 wt% alumina, 10-20 wt% fluorite as a nucleating agent or a colorant and 36-40.5 wt% stainless steel-refined slag containing 58 wt% calcium oxide, 4.5-5.5 wt% magnesia, 0.5-0.7 wt% alumina, 28-32 wt% silica, 0.1-0.2 wt% manganese oxide, 0.1-1.0 wt% ferric oxide and 0.5-1.5 wt% chromium, (b) m...

The solidifying composition is prepared by (A) mixing 4wt% calcium chloride, 16wt% sodium carbonate, 8wt% magnesium chloride, 6wt% ammonium chloride, 2wt% calcium hydroxide, 7wt% potassium chloride, 8wt% calcium chloride, 5wt% aluminum chloride, 4wt% calcium carbonate, 9wt% magnesium carbonate, 8wt% calcium sulphate and 23wt% solid sodium silicate, and (B) as soon as dissolving the mixture with wa...

The coated magnesia powder for flame spraying comprises of, in weight percent, 72 to 94.9% magnesia powder(M) of maximum particle size below 210 Pm, 5 to 25% converter slag(s) of particle size below 44 Pm, and 0.1 to 3.0% Mg-Al or Al metal powder(a) of particle size below 44 Pm. The disclosed powder of particle size below 0.5mm is produced by (1)coating the slag and metal powders with a common bin...

A roll-up closure device for typically collapsible vehicle shelters of the type having a structure made of assembled tubular members and cross-members and a complementary covering therefor made of a flexible plastics material and defining at the front end thereof a door opening. The side walls of the shelter are inclined in such a way as to diverge from top to bottom, whereby the door opening has ...

A CPU introduces software commands to a first limited capacity memory (e.g. FIFO), on an integrated circuit chip. Data (e.g. graphics) from a first portion of a second memory (off chip) is processed in accordance with such commands. A second portion (e.g. FIFO) of the second memory may also store commands normally passing from the CPU through the first memory. When the first memory becomes full, t...

The water proofing agent for coating mortar or concrete structure is composed of 8-20 wt% glass powder with a particle size of less than 62 micrometer, 50-70 wt% fine sand with a particle size of less than 500 micrometer, 0.05-0.2 wt% formaldehyde condensate of sodium naphthalene sulfonate as a good dispersive surfactant and less than 3 wt% sodium silicate powder as a filler against 100 wt% cement...

The water repellent molded body is manufactured by (A) mixing amorphous silicate and lime materials with water, (B) milling and dispersing the slurry in a sand mill or homo-mixer, (C) forming hydrated calcium silicate gel slurry by agitating the milled slurry under normal pressure after adding 3-10 wt% silicone oil to the total amount of the solid components, (D) charging reinforcing fibers into t...

The slag board is manufactured by mixing raw materials containing slag with additive, forming, autoclaving and drying. The raw materials are composed of 40-70 wt% water granulation slag with pH 1.4-1.9, 3-33 wt% gypsum, 1-5 wt% slaked lime having Blaine surface area 4,000-7,000 cm2/g and less than 5 micrometers average diameter of particles and 5-15 wt% reinforcing materials. And the additive comp...

The refractory material is composed of 40-60wt% alumina, 10-40wt% spinel clinker, 3-20wt% chromium oxide, 3-15wt% alumina cement and 2-5wt% sodium hexametaphosphate The used spinel clinker is composed of magnesia(MgO) and alumina(Al2O3) at the weight ratio of 28:72. The obtained refractory material has good corrosion resistance, good slag resistance and minimum adhesion of molten iron, so it impro...

Currently available corrugated carton sealing machines utilize a pair of taping heads, each of which carries a roll of pressure sensitive tape. When a roll of tape is finished, it is necessary to stop the machine and replace the roll with a resulting loss in production time. A simple solution to the problem is provided by the tape splicing device described herein which includes a bracket for mount...

The invention provides catheters having round lumens arranged in side-by-side relationship and separated by a thin wall which enlarges into reinforcement zones to either end of the wall, the whole being contained within a generally elliptical outer surface. The catheter exhibits improved resistance to kinking.