Abstract: A solder product 20 includes: a lead-free solder part 21 containing tin as a main component and a metal element other than lead as a secondary component; and a carboxylic acid having 10 to 20 carbons, the carboxylic acid being mainly distributed over the surface of the solder product 20 to form a surface layer 22. The carboxylic acid is preferably a fatty acid having 12 to 16 carbons, and more preferably a palmitic acid.

Abstract: A solder product 20 includes: a lead-free solder part 21 containing tin as a main component and a metal element other than lead as a secondary component; and a carboxylic acid having 10 to 20 carbons, the carboxylic acid being mainly distributed over the surface of the solder product 20 to form a surface layer 22. The carboxylic acid is preferably a fatty acid having 12 to 16 carbons, and more preferably a palmitic acid.

Abstract: A solder product 20 includes: a lead-free solder part 21 containing tin as a main component and a metal element other than lead as a secondary component; and a carboxylic acid having 10 to 20 carbons, the carboxylic acid being mainly distributed over the surface of the solder product 20 to form a surface layer 22. The carboxylic acid is preferably a fatty acid having 12 to 16 carbons, and more preferably a palmitic acid.

Abstract: The invention provides a technique and a device that dramatically improve joint reliability of miniature joints of fine electronic components. According to the invention, when producing a tin or a solder alloy used for electronic components, an ingot of a tin or a solder alloy is heated, melted and delivered to a reactor. Also, a solution containing organic acid having a carboxyl group (—COOH) is delivered to the reactor. After stirring and mixing the two liquids intensively, the mixed liquid is separated into a molten tin or a molten solder alloy liquid and an organic acid solution according to the difference in specific gravity. Then, the respective liquids are circulated to the reactor, and the metal oxides and the impurities existing in the molten tin or the molten solder alloy are removed, and the molten tin or the molten alloy is purified to have oxygen concentration of 5 ppm or less.

Abstract: A tin or solder alloy film is formed by ejecting molten tin liquid or molten solder alloy liquid in a jet state onto a copper surface of an electronic component. The overflowing molten tin or molten solder alloy liquid is transported to a stirrer. Then, cuprate and the like mixed in the overflowing molten tin or molten solder alloy liquid are taken in to the organic fatty acid solution by fiercely stirring and mixing the molten tin or molten solder alloy liquid in contact with a solution at a temperature of 180 to 350° C. containing 1 to 80 weight % of organic fatty acid having 12 to 20 carbon number that circulates in the stirrer to purify the overflowing molten tin or molten solder alloy liquid.

Abstract: The invention provides a technique and a device that dramatically improve joint reliability of miniature joints of fine electronic components. According to the invention, when producing a tin or a solder alloy used for electronic components, an ingot of a tin or a solder alloy is heated, melted and delivered to a reactor. Also, a solution containing organic acid having a carboxyl group (—COOH) is delivered to the reactor. After stirring and mixing the two liquids intensively, the mixed liquid is separated into a molten tin or a molten solder alloy liquid and an organic acid solution according to the difference in specific gravity. Then, the respective liquids are circulated to the reactor, and the metal oxides and the impurities existing in the molten tin or the molten solder alloy are removed, and the molten tin or the molten alloy is purified to have oxygen concentration of 5 ppm or less.

Abstract: A tin or solder alloy film is formed by ejecting molten tin liquid or molten solder alloy liquid in a jet state onto a copper surface of an electronic component. The overflowing molten tin or molten solder alloy liquid is transported to a stirrer. Then, cuprate and the like mixed in the overflowing molten tin or molten solder alloy liquid are taken in to the organic fatty acid solution by fiercely stirring and mixing the molten tin or molten solder alloy liquid in contact with a solution at a temperature of 180 to 350° C. containing 1 to 80 weight % of organic fatty acid having 12 to 20 carbon number that circulates in the stirrer to purify the overflowing molten tin or molten solder alloy liquid.

Abstract: A low density body such as a sheet, board or molding usable as a cushioning material, heat-insulating material, sound-absorbing material, filter, low density base paper or the like is provided. The low density body having a density of 0.05 to 0.45 g/cm.sup.3 is prepared by dewatering a slurry containing fine fibers having a bond-reinforcing factor of at least 0.15 and curled fibers having a wet curl factor of 0.4 to 1.0, and drying the resultant product.

Abstract: Finely divided fibrous cellulose particles having a high viscosity, suspension stability and water-retaining property are produced by suspending cellulose particles in water or an organic liquid, and subjecting the resultant cellulose particle slurry to a wet grinding procedure in a solid medium-agitation type grinder in which the cellulose particles are agitated and ground with solid medium particles, for example, glass beads, to an extent such that the cellulose particles are divided into fine fibrous cellulose particles having a water-retaining power WRP of 150% or more in accordance with an equation (I):WRP(%)=(A-B)/B.times.100 (I)wherein A represents the weight of a sample of the resultant cellulose particle suspension centrifugally hydroextracted at an acceleration of 3,000 G for 15 minutes, and B represents the weight of the sample dried at 105.degree. C. for 5 hours or more.

Abstract: The invention relates to a herbicidal composition having an inert carrier and an effective amount of a compound having the formula ##STR1## wherein X is the same or different substituent selected from the group consisting of halogen, nitro, C.sub.1-6 alkyl, halo C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.1-6 alkylthio and C.sub.1-6 alkylsulfonyl;n is 1, 2, 3 or 4;R.sup.1 is C.sub.1-6 alkyl which is substituted by cyano, halogen, hydroxy, C.sub.1-6 alkoxy, C.sub.1-6 alkylthio, C.sub.1-6 alkylsulfonyl or tetrahydropyranyloxy; C.sub.1-6 alkylthio, phenylthio, pyridyl or tetrahydropyranyl;R.sup.2 is C.sub.1-6 alkyl;l is 0, 1 or 2.

Abstract: Thia-diazole derivatives having the following partial structural formula had selective herbicidal activity on some crops.

Abstract: A cyclohexane derivative having the formula ##STR1## wherein X is 2-(ethylthio)propyl or 2-(4-chlorophenylthio)ethyl.

Abstract: A cyclohexane derivative having the formula ##STR1## wherein R.sub.1 is C.sub.1-4 alkyl or halo phenyl;R.sub.2 is C.sub.1-3 alkyl or cyano group;R.sub.3 is C.sub.1-4 alkyl;R.sub.4 is C.sub.1-4 alkyl or C.sub.1-4 alkenyl;X is straight or branched chain C.sub.1-4 alkylene; andn is 0, 1 or 2,which possess herbicidal properties, and the process for its preparation.

Abstract: A compound having the general formula ##STR1## wherein R.sub.1 is alkyl having 1-3 carbon atoms;R.sub.2 is alkyl having 1-3 carbon atoms, allyl, propargyl or haloalkenyl; andA is selected from the group consisting of ##STR2## wherein R.sub.3 is --SO.sub.2 R.sub.6 group, ##STR3## R.sub.4 is hydrogen, alkyl having 1-6 carbon atoms; phenyl or halophenyl; R.sub.5 is alkyl having 1-3 carbon atoms; X is oxygen or sulfur; and n is 0 or 1; wherein R.sub.6 is alkyl having 1-6 carbon atoms, haloalkyl having 1-6 carbon atoms or propenyl; R.sub.7 is hydrogen or alkyl having 1-4 carbon atoms; R.sub.8 is hydrogen, alkyl having 1-6 carbon atoms; propenyl or methoxy; R.sub.9 is hydrogen, alkyl having 1-8 carbon atoms, haloalkyl having 1-3 carbon atoms, alkoxy having 1-6 carbon atoms, propenyl or phenyl substituted with methyl; and Y and Z are oxygen or sulfur; and a metal salt or a quaternary ammonium salt of a compound defined herein above.The compound is useful as a herbicide.

Abstract: A compound having the general formula ##STR1## wherein R.sub.1 is ethyl or allyl; andR.sub.2 is alkyl having 1-4 carbon atoms;and a metal salt of the compound defined herein above.The compound is useful as herbicides.

Abstract: Compounds of the general formula ##STR1## wherein X is trifluoromethyl or halogen,R.sub.1 is hydrogen, lower alkyl, lower alkenyl or benzyl,R.sub.2 is lower alkyl,R.sub.3 is hydrogen, alkyl or alkali metal,Y is oxygen or sulfur, andn is 0, 1 or 2;are useful as herbicides.

Abstract: Compounds of the general formula ##STR1## wherein R.sub.1 is lower alkyl, phenyl, substituted phenyl or benzyl,R.sub.2 is lower alkyl,R.sub.3 is lower alkyl or lower alkenyl,R.sub.4 is hydrogen or lower alkoxycarbonyl,X is straight or branched chain lower alkylene, andn is 0, 1 0r 2;and metal salts and ammonium salts of the compounds defined hereinabove.The compounds are useful as herbicides.

Abstract: A method for removing malodorous sulfur compounds from a fluid containing such compounds. In this method, fungi belonging to genera Cephalosporium, Paecilomyces, Penicillium, Aspergillus, Trichoderma and Mucor can be used for effectively removing malodorous sulfur compounds from a fluid.

Abstract: A new and distinct variety, of Cornus kousa, called "Tsukuba-No-Mine" of white dogwood plant substantially as herein shown and described, characterized particularly as to novelty by the unique combination of (1) upright growth habit with thin branches and high branching characteristics; (2) small leaves; (3) flowering in a period from early to late June, over approximately 20 days; (4) blossoms being yellowish white; and (5) blossoms having thin patulous of narrow substantially lanceolate-shape of approximately 0.9 to 1.2 cm in width, and small diameter of approximately 6 to 7 cm.

Abstract: A new and distinct variety, called "Benifuji", of a pink dogwood tree substantially as herein shown and described characterized particularly as to novelty by the unique combination of the appearance of a large number of branches with an upright limb growth habit, as tall as the known variety "Miss Satomi", having leaves of medium size substantially equivalent to the wild varieties, a flower diameter of approximately 8-9 cm with the color of the flower being deep purplish pink and the distance between branches being small. The plant substantially does not become unbalanced as a result of trimming.