Abstract: The invention provides a water-soluble metal working lubricant which is suitably employed particularly in press-working of aluminum material and which is excellent in both working properties and degreasing properties. The water-soluble metal working lubricant includes 85 mass % or less of water (A); 5 to 75 mass % of a metal salt of an organic carboxylic acid (B) wherein carboxylic acid residue has 8 or more carbon atoms in-total and the acid/alkali ratio by mole is 1:0.5 to 1.1; 1 to 50 mass % of at least one metal salt (C) selected from among an organic phosphate ester metal salt, an organic phosphite ester metal salt, an organic phosphonate metal salt, and an organic borate ester metal salt, each having an alkyl group having 8 or more carbon atoms in total; and 10 to 80 mass % of a non-ionic surfactant (D).

Abstract: A lubricating oil for compression-type refrigerator includes, as a main component, a polyoxyalkyleneglycol derivative represented by the general formula:

Abstract: A transaction supporting facility enabling both a consumer and a provider to perform a transaction at the prices that both desire by removing the drawback of conventional auction systems, that is, the difficulty and scarcity of making a transaction, wherein when providers X and consumers Y want to make transactions, if the offer price presented by a provider X is higher than the purchase price presented by a consumer Y, the transaction is conducted without adjusting the presented prices, the provider X can sell a commodity at the offer price, the consumer Y can purchase the commodity at the purchase price, and the difference between the prices can be managed and dealt with by the system side.

Abstract: Disclosed is a lubricating oil for compression-type refrigerator comprising, as a main component, a polyoxyalkyleneglycol derivative represented by the general formula: R1[(OR2)mOR3]n wherein symbols are as defined in the specification. Said lubricating oil has a favorable compatibility with refrigerants and an excellent lubricating property, and is utilized as the lubricating oil for compression-type refrigerator employing hydrogen-containing fluorocarbon compound refrigerants including R-134a or fluorocarbon compound refrigerants without hydrogen.

Abstract: Disclosed is a lubricating oil for compression-type refrigerator comprising, as a main component, a polyoxyalkyleneglycol derivative represented by the general formula: R1&Brketopenst;(OR2&Parenclosest;mOR3]n wherein symbols are as defined in the specification. Said lubricating oil has a favorable compatibility with refrigerants and an excellent lubricating property, and is utilized as the lubricating oil for compression-type refrigerator employing hydrogen-containing fluorocarbon compound refrigerants including R-134a.

Abstract: Disclosed is a lubricating oil for compression-type refrigerator comprising, as a main component, a polyoxyalkyleneglycol derivative represented by the general formula: 1

Abstract: A refrigerating oil composition which exhibits excellent lubrication properties when used in combination with certain types of coolant, such as a hydrofluorocarbon coolant, which may serve as substitutes for chlorofluorocarbon coolants which have been implicated as causing environmental problems. The refrigerating oil composition of the present invention is obtained by incorporating, into a component (A); i.e., a base oil containing a synthetic oil, a component (B); i.e, a polyalkylene glycol derivative of formula (I) having a number average molecular weight of 200-3,000: R1—(OR2)m—(OR3)n—OR4  (I) wherein R1 and R4 represent C1-C30 hydrocarbon groups, etc.; R2 represents a C2-C4 alkylene group; R3 represents a C2-C30 alkylene group; m and n are numbers that satisfy the above-described molecular weight conditions, wherein n may be 0; and at least one of R1, R3, and R4 has a hydrocarbon group having six or more carbon atoms.

Abstract: A lubricating oil for a flon refrigerant, containing a polyglycol compound having a kinematic viscosity at 40° C. of at least 30 cSt, a viscosity index of at least 150 and a water content of not more than 200 ppm as a main component. The lubricating oil of the present invention has good stability in the presence of a flon refrigerant, does not cause the copper plating phenomenon and has good compatibility with not only flon-11 and flon-12 but also sparingly soluble refrigerants such as hydrogen-containing flon compounds and perfluoroalkane.

Abstract: A lubricating oil for a flon refrigerant, containing a polyglycol compound having a kinematic viscosity at 40° C. of at least 30 cSt, a viscosity index of at least 150 and a water content of not more than 200 ppm as a main component. The lubricating oil of the present invention has good stability in the presence of a flon refrigerant, does not cause the copper plating phenomenon and has good compatibility with not only flon-11 and flon-12 but also sparingly soluble refrigerants such as hydrogen-containing flon compounds and perfluoroalkane.

Abstract: This invention relates to equipment for treating the aforesaid waste plastics directly with supercritical water, and an object thereof is to provide a method for the anticorrosive treatment of waste plastics treating equipment which makes it possible to use inexpensive stainless steel. Waste plastics treating equipment made of stainless steel is charged with a predetermined amount of an aqueous solution containing at least one alkali metal salt, and this aqueous solution is deaerated until its dissolved oxygen content is reduced to 0.5 mg/L or less. After the temperature and pressure of the equipment are raised until supercritical conditions are established, these temperature and pressure are maintained for a predetermined period of time.

Abstract: A refrigerating oil composition which exhibits excellent lubrication properties when used in combination with certain types of coolant, such as a hydrofluorocarbon coolant, which may serve as substitutes for chlorofluorocarbon coolants which have been implicated as causing environmental problems. The refrigerating oil composition of the present invention is obtained by incorporating, into a component (A); i.e., a base oil containing a synthetic oil, a component (B); i.

Abstract: A lubricating oil for compression-type refrigerators using a refrigerant containing pentafluoroethane which lubricating oil comprises a polyvinyl ether compound having (a) a constituting unit represented by general formula (I): or a polyvinyl ether compound having constituting unit (a) and (b) a constituting unit represented by general formula (I′): (wherein R represents a hydrocarbon group which has 1 to 3 carbon atoms and may have ether bond in the group, and R′ represents a hydrocarbon group which has 3 to 20 carbon atoms and may have ether bond in the group) as the main component. The above lubricating oil shows excellent compatibility with hydrofluorocarbon refrigerants containing pentafluoroethane which can replace chlorofluorocarbons causing environmental pollution, has a high volume intrinsic resistance, and exhibits excellent stability and lubricating property.

Abstract: A refrigerating oil composition which exhibits excellent lubrication properties when used in combination with certain types of coolant, such as a hydrofluorocarbon coolant, which may serve as substitutes for chlorofluorocarbon coolants which have been implicated as causing environmental problems. The refrigerating oil composition of the present invention is obtained by incorporating, into a component (A); i.e., a base oil containing a synthetic oil, a component (B); i.e, a polyalkylene glycol derivative of formula (I) having a number average molecular weight of 200-3,000: R1—(OR2)m—(OR3)n—OR4  (I) wherein R1 and R4 represent C1-C30 hydrocarbon groups, etc.; R2 represents a C2-C4 alkylene group; R3 represents a C2-C30 alkylene group; m and n are numbers that satisfy the above-described molecular weight conditions, wherein n may be 0; and at least one of R1, R3, and R4 has a hydrocarbon group having six or more carbon atoms.

Abstract: A lubricating oil for a flon refrigerant, containing a polyglycol compound having a kinematic viscosity at 40° C. of at least 30 cSt, a viscosity index of at least 150 and a water content of not more than 200 ppm as a main component. The lubricating oil of the present invention has good stability in the presence of a flon refrigerant, does not cause the copper plating phenomenon and has good compatibility with not only flon-11 and flon-12 but also sparingly soluble refrigerants such as hydrogen-containing flon compounds and perfluoroalkane.

Abstract: A method and a device for dehydrating a heavy oil wherein an emulsion of water and a heavy oil is mixed in a stirring chamber together with a suitable amount of an emulsion breaker, the mixture is subjected to separation in a two-phase separation tank to a heavy oil-rich component and a water-rich component, the heavy oil-rich component is then fed to a dehydrator of a high voltage charge type in which separation to a dehydrated heavy oil and a water-rich component is effected, the water-rich component fractions supplied from the two-phase separation tank and the dehydrator are mixed in a pipeline, the mixture thus obtained is admixed with an O/W emulsion breaker and then, fed to a stirring chamber and finally separated to a heavy oil-containing component and a heavy oil-free water layer in a second separation chamber.

Abstract: Disclosed is a refrigerator oil composition comprising at least one base oil selected from mineral oils and synthetic oils, and at least one polyoxyethylene-type nonionic surfactant. The composition has an excellent lubricating property, while specifically improving the lubricity between aluminium materials and steel materials. This is effective for preventing such materials from being seized and worn, and is suitable as a lubricating oil in refrigerators using hydrogen-containing Flon refrigerants, such as R134a, that do not cause environmental pollution.

Abstract: Disclosed is a vacuum pump oil, of which the base oil substantially comprises hydrocarbons having a molecular weight of not smaller than 300, and has a viscosity index of not smaller than 120 and a dynamic viscosity at 40.degree. C. of from 10 to 500 mm.sup.2 /sec. The vacuum pump oil has good thermal stability and good capabilities to produce high ultimate vacuum degrees and to facilitate low-temperature starting of pumps. Using this, vacuum pumps can be rapidly started and can reach the steady-state driving condition even in winter and in cold districts.

Abstract: Disclosed is a refrigerator oil composition comprising at least one base oil selected from mineral oils and synthetic oils, and at least one hydroxy-fatty acid derivative selected from (A) hydroxy-fatty acids or their condensates, (B) metal salts or amine salts of hydroxy-fatty acids or their condensates, and (C) esters of hydroxy-fatty acids. The composition has an excellent lubricating property, while specifically improving the lubricity between aluminium materials and steel materials. This is effective for preventing such materials from being seized and worn, and is suitable as a lubricating oil in refrigerators using hydrogen-containing Flon refrigerants, such as R134a, that do not cause environmental pollution.

Abstract: A refrigerating machine oil composition which comprises, in the form of a blend, a base oil comprising a mineral oil or a synthetic oil and at least one species of an amine salt of an organic phosphoric acid, e.g. monooctylamine dioleyl phosphate.

Abstract: A method and a device for dehydrating a heavy oil wherein an emulsion of water and a heavy oil is mixed in a stirring chamber together with a suitable amount of an emulsion breaker, the mixture is subjected to separation in a two-phase separation tank to a heavy oil-rich component and a water-rich component, the heavy oil-rich component is then fed to a dehydrator of a high voltage charge type in which separation to a dehydrated heavy oil and a water-rich component is effected, the water-rich component fractions supplied from the two-phase separation tank and the dehydrator are mixed in a pipeline, the mixture thus obtained is admixed with an O/W emulsion breaker and then, fed to a stirring chamber and finally separated to a heavy oil-containing component and a heavy oil-free water layer in a second separation chamber.