In a laser welding method, materials covered with a coating of lower melting point than the base material like Zn-coated steel are stacked one over the other, with a spacer between them providing a predetermined continuous air gap. The assembly with a clamp is conected to cylinders maintaining it together. The welding operation is carried out by application of a laser beam to the plates, the Zn ...

A combustion method wherein the fuel is burned in a primary combustion zone (10, 11, 12) under reducing conditions and sulfur captured as alkaline sulfide. The reducing gas formed is oxidized to combustion gas in a secondary combustion zone (2, 3) which is then separated from solids containing alkaline sulfide in a separation zone (13, 14). The separated solids are then oxidized in a solids oxidat...

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...

For producing solutions of cellulose in water-containing tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat under reduced pressure, the suspension having a viscosity between 50 and 15,000 Pas.sec, measured in a relative system, is spread as a layer or film over a heating surface and transported until a homogeneous solution of t...

For producing solutions of cellulose in water-containing tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat under reduced pressure, the suspension having a viscosity between 50 and 15,000 Pas.sec, measured in a relative system, is spread as a layer or film over a heating surface and transported until a homogeneous solution of t...

(a) 10-80 wt.% polar fatty oxy-cpd.(m.w. 250-500, acid value 25-100, saponification value 30- 250); (b) 5-40 wt.% oxy-emulsifier, i.e. hexanol, decanol; (c) 5-75 wt.% hydrophilic sepg. agent, i.e. glycole monoether; (d) aromatic hydrocarbon, i.e. 10-40 wt.% xylene; and (e) 5-40 wt.% mineral oil. The conditioner is added by 100:1 vol. ratio.

A cold strip rolling oil for steel plate comprises at least one ester oil of (A) 1st ester oil of formula R1COO-(R2-O)n-R3[R1= C7-29 alkyl, alkenyl, hydroxy alkyl or hydroxy alkenyl; R2=C2-4 alkyklene; R3= alkyl or alkenyl; n=1-5 , and (B) 2nd ester oil of formula R4- C(=0)-O- (R5-0)m- C(=0)-R6[R4 and R6 are each C5-29 alkyl or aklenyl; R5=C2-4 alkylene; m=1-30 . Pref. oils and fats from sea brea...

A working fluid for a traction drive, having a kinematic viscosity of at least 3cSt at 100≰C, comprises (A) a decahydronaphthalene (DHN) cpd. and (B) a cyclohexane cpd. The cpd. (A) is pref. bis (DHN) cpd. of formula (I) or alkane cpd. of formula (II)[R1=H of C1-3 alkyl . The cpd. (B) is pref. alkane cpd. of formula (III)[R2= R3= R4= R5= R6=H or methyl; p=g=1,2 or 3 . The fluid is useful in cont...

A lubricant for a power transmission consists of (a) a base oil, the main component of which is a satd. hydrocarbon having a condensed and/or uncondensed ring, (b) one or more zinc dithiophosphate of formula (I), or oxymolybdenum organo phosphorodithioate sulphide of formula (II), (c) alkenyl succinimide, and (d) rust inhibitor. In the formulas, R1, R2, R3 and R4 are each C3-30 alkyl, C6-30 aryl ...

In a fast fluidized bed reactor having, in a lower region (17), downwardly and inwardly inclined walls (16), a change in the direction (18) of the wall surface or a ledge or protrusion is provided to change the direction of the particles flowing downwardly adjacent the wall (16) for directing the particles inwardly away from the wall (16) and into the region acted on by the nozzles (6) providing t...

A biocidal preservative for cellulose-containing products containing a biocidally effective amount of a polymeric quaternary ammonium borate obtained by simultaneous reaction of (A) at least one member of the group consisting of boric acid and salts and esters thereof and (B) an amine of the formula and (C) ethylene oxide or propylene oxide wherein R1 is alkyl or alkenyl of 8 to 22 car...

A biocidal preservative for cellulose-containing products containing a biocidally effective amount of a polymeric quaternary ammonium borate obtained by simultaneous reaction of (A) at least one member of the group consisting of boric acid and salts and esters thereof and (B) an amine of the formula and (C) ethylene oxide or propylene oxide wherein R1 is alkyl or alkenyl of 8 to 22 car...

A severed nerve is regenerated using a device consisting of (A) a tublar, semipermeable membrance (ME) provided with openings to receive the ends of a severed nerve, (B) at least, elongated trabeculae inside the ME as passageway for capillary ingrowth, (C) a porous outer ME surface allowing capillary ingrowth into (B), and (D) a semipermeable inner ME surface. The tubular ME serves as protective ...

PCT No. PCT/AU89/00273 Sec. 371 Date May 15, 1990 Sec. 102(e) Date May 15, 1990 PCT Filed Jun. 27, 1989 PCT Pub. No. WO90/01986 PCT Pub. Date Mar. 8, 1990.A diamond compact comprised of more than 60 volume percent and less than 90 volume percent of diamond crystals connected by a silicon carbide bond. The bond contains more than 500 parts per million of nitrogen and/or phosphorus and the compact p...

Liquid detergent compositions suitable for laundry use consist essentially of water, Electrolyte, Active Ingredient and preferably a Builder. They comprise a space-filling, floc-like aggregate of surfactant containing spherulites, substantially cocontinuous with an aqueous liquid micellar solution. They are shear thinning, mobile, stable to shear stress, storage under extreme climatic conditions a...

A two-stage upflow process for a coal gasification comprises: (a) igniting an oxygen-contg. gas and a first increment of coalin-water slurry in a horizontal fired slagging reactor to convert the oxygen, the coal and the water into steam and gaseous combustion prods; (b) contacting the discharge from the fired reactor with a second increment in a vertical unfired heat-recovery unit; (c) using the h...

A container holder adapted to hold various sized containers (a,b) one at a time comprises a flexible holding member having a central hole, the holding means having means for centering, exerting a holding force on, and releasably retaining a container, a holding frame that detachably retains the holding member. The holder further includes at least two different adaptor plates which are respectivel...

(a) an image-transmitting member made of multifilament type plastic optical fiber (I) having a rectangular cross-section; (b) an object lens arranged on one end of the optical fiber; and (c) means for guiding an image of an object transmitted to the other end of fiber (I) to an image-receiving portion. Fiber (I) has an islands-in-sea structure in whih 50-10000 light-transmitting core-sheath struc...

The manufacturing method for semiconductor device for DRAM or EEPROM has the following steps: (a) forming an insulating layer (5) on a semiconductor substrate (1); (b) forming a first layer of electrode material on the insulating layer; (c) ion implanting on an impurity region (7) in the substrate through the electrode layer (6) and insulating layer (5); (d) forming an electrode pattern on the imp...