Abstract: Disclosed is an asphalt composition to which a water soluble prepolymer which is resinified while the reaction proceeds gradually in the aqueous solution is added, wherein the strength of the asphalt composition is notably improved. Further, the resinification speed can freely be controlled by the action of a resinification accelerator. Accordingly, the additive for the emulsified asphalt and the asphalt composition for blending at cold temperatures can be applied effectively to various applications such as road pavement, railroad, waterproof agents, and adhesives.

Abstract: A developer additive selected from the group consisting of compounds represented by the general formulas (1) to (5): ##STR1## a toner composition having excellent fixing properties and improved pulverizability which comprises the developer additive, a binder resin and a colorant and a developer composition having excellent toner-fixing properties which comprises the developer additive, a binder resin and a colorant.

Abstract: An electrophotographic developer composition for flash fusing containing at least a binder resin based on a polyester resin and a colorant, the polyester resin being formed between an acid component, not less than 80 mol % of the acid component being phthalic acid series dicarboxylic acid and an alcohol component, not less than 80 mol % of the alcohol component being bisphenol A alkylene oxide adduct, the polyester resin having an acid value of not more than 10.0 KOH mg/g, a softening temperature of not less than 95.0.degree. C. and not more than 125.0.degree. C. as determined using a flow tester of the "koka-shiki" type and a glass transition temperature of not less than 50.0.degree. C. and not more than 80.0.degree. C. as determined by DSC, whereby substantially no odor is produced upon flash fusing.

Abstract: The present invention is directed to a developer composition for electrophotography containing a binder resin comprising at least a polyester resin as the main component, a colorant and a bisphenol A alkylene oxide adduct, wherein said bisphenol A alkylene oxide adduct is contained in a ratio of not less than 1.0 part by weight and not more than 10.0 parts by weight to 100 parts by weight of the binder resin. The developer composition of the present invention possesses satisfactory low-temperature fixability and is excellent in offset resistance, storage stability and resin pulverizability.

Abstract: An electrophotographic developer, such as a toner binder and a coating on a carrier, comprises a polyester having an acid value of 5 KOH mg/g or less and a hydroxyl value of 60 KOH mg/g or less, having a linear structure without crosslinking or a crosslinked structure provided by a monomer having three or more reactive groups. A toner having the polyester as a binder is effectively charged positively or negatively.

Abstract: A multiple purpose instantaneous gas water heater comprises a combination of a larger combustion capacity type first burner with a smaller combustion capacity type second burner. Each of the burners can be controlled by a proportional combustion control method and/or an intermittent combustion control method. It is possible to combine these functions within a microcomputer system so as to use each or both burners selectively, or both together, so that it is possible to select water from a wide range of hot water temperatures or to select a target temperature.

Abstract: A toner for developing electrostatic latent images which comprises a colorant and two kinds of polyester is disclosed.The fFirst polyester is a nonlinear polyester that is composed of monomers including monomers of trivalence or higher valency and which satisfies the following conditions A1 and A2, the second polyester is a nonlinear polyester that is composed of monomers including monomers of trivalence or higher valency and which satisfies the following conditions B1 and B2, and the difference between the softening points of said first and second polyesters is at least 10.degree. C.condition A1: the monomers of trivalence or higher valency represent from 0.05 mol % to less than 15 mol % of all the monomers present;condition A2: the softening point is in the range of from 120.degree. C. to 160.degree. C.;condition B1: the monomers of trivalence or higher valency represent from 0.05 mol % to less than 15 mol % of all the monomers represent;condition B2: the softening point is in the range of from 80.degree.

Abstract: A multiple purpose instantaneous gas water heater comprises a combination of a larger combustion capacity type first burner with a smaller combustion capacity type second burner. Each of the burners can be controlled by a proportional combustion control method and/or an intermittent combustion control method. It is possible to combine these functions within a microcomputer system so as to use each or both burners selectively, or both together, so that it is possible to select water from a wide range of hot water temperatures or to select a target temperature.

Abstract: A toner composition for electrophotography contains a binder resin, coloring material, and other additive as required, characterized in that the principal component of the binder resin is a polyester resin formed by co-condensation of(a) a diol component represented by the formula below; ##STR1## (where R denotes an ethylene group or propylene group; x and y each are integers greater than 1; and the average value of x+y is 2 to 7.)(b) a dibasic carboxylic acid, an acid anhydride thereof, or a lower alkyl ester thereof; and(c) tribasic or polybasic carboxylic acid, an acid anhydride thereof, or a lower alkyl ester thereof, or a trihydroxyl or polyhydroxylic alcohol; said polyester resin having an acid value (AV) and a hydroxy value (OHV) defined by OHV/AV=1.2 and up.

Abstract: This invention relates to a cold/hot water discharging apparatus which is used for cold/hot water massage shower, and the like. In order to alternately switch and supply hot water of a predetermined temperature supplied from a hot water source to a discharge portion, a valve of a cold/hot water mixing tap is driven by a motor and is reciprocated in a pre-set period between a position where high temperature hot water is discharged and low temperature hot water is discharged. In each of the periods for discharging low/high temperature hot water, an optimum gain of this period is determined from the previous period and previous gain so as to shorten the discharge period of cold/hot water and to obtain a stable curve of the discharge hot water.