摘要:
A method of receiving concentrated calls enables a specific terminal of an exchange of a communication network to receive concentrated calls from callers without letting the callers repeat the calls. The method registers calls to the terminal during the congestion of the exchange. Once the congestion is dissolved, the method connects the terminal to the callers one after another. The method prepares a registration list and a reception list in the exchange. In response to a request from the terminal, the exchange stores reception conditions of calls such as a reception time and the number of calls to receive in the registration list. Upon receiving a call from a caller to the terminal, the exchange determines whether or not the call satisfies the reception conditions without connecting the call to the terminal. If the call satisfies the reception conditions, the exchange records the number of the caller, etc., in the reception list and terminates the communication with the caller. Thereafter, the exchange connects the terminal to the callers recorded in the reception list one after another.
摘要:
The invention provides an amorphous polyester resin that can sufficiently achieve the reciprocal performance properties of hot offset resistance and cold offset resistance, which is a major issue for a toner for electrostatic image development, while allowing adequate blocking resistance to be obtained, as well as a binder resin for toner for electrostatic image development, and an amorphous polyester resin production method, the amorphous polyester resin being obtained by reaction between a polybasic carboxylic acid compound and a polyhydric alcohol, wherein the polybasic carboxylic acid compound comprises (a) the reaction product between an aromatic polybasic carboxylic acid compound and a C2-4 glycol at 60 mol % or greater based on the total amount of the polybasic carboxylic acid compound, and the amorphous polyester resin has a glass transition point of 55° C. to 75° C. and a weight-average molecular weight of 10,000 to 50,000.
摘要:
The invention provides an amorphous polyester resin that can sufficiently achieve the reciprocal performance properties of hot offset resistance and cold offset resistance, which is a major issue for a toner for electrostatic image development, while allowing adequate blocking resistance to be obtained, as well as a binder resin for toner for electrostatic image development, and an amorphous polyester resin production method, the amorphous polyester resin being obtained by reaction between a polybasic carboxylic acid compound and a polyhydric alcohol, wherein the polybasic carboxylic acid compound comprises (a) the reaction product between an aromatic polybasic carboxylic acid compound and a C2-4 glycol at 60 mol % or greater based on the total amount of the polybasic carboxylic acid compound, and the amorphous polyester resin has a glass transition point of 55° C. to 75° C. and a weight-average molecular weight of 10,000 to 50,000.
摘要:
An oligomer removing agent for polyester-based fiber materials comprises a polyester copolymer which is obtained by polycondensation of a dibasic acid component containing 15-65 mol % of a sulfonate group-containing dibasic acid and a dihydric alcohol component containing polyethylene glycol with a molecular weight of 900-3500, and which has a 200° C. melt viscosity of 5000-23,000 mPa·s and has 10-40 mass % polyoxyethylene chains in the molecule. The oligomer removing agent is able to overcome the problems caused by deposition of polyester oligomers, when added to the dyeing bath in a dyeing step for polyester fiber materials or for fiber materials that are composites thereof with other fiber materials.
摘要:
A process for producing a high purity 2,4'-dihydroxydiphenylsulfone (2,4'-isomer) comprising separating 2,4'-isomer from 4,4'-dihydroxydiphenylsulfone (4,4'-isomer) by adding a hydroxide of an alkali metal in an amount which is the total of an amount by mol 1.6 to 2.2 times as great as the amount by mol of 2,4'-isomer and an amount by mol 0.8 to 1.2 times as great as the amount by mol of 4,4'-isomer to a solution of a mixture of 2,4'-isomer and 4,4'-isomer containing 15% by weight or more of 2,4'-isomer in water, to allow 2,4'-isomer to remain dissolved in water in the form of a dialkali metal salt thereof and 4,4'-isomer to be precipitated from the solution in the form of a monoalkali metal salt thereof. A carbonate of an alkali metal may also be used. In order to accelerate the operation, an excess amount of the alkali may be added, which is subsequently neutralized. A high purity 2,4'-isomer having a purity of 95 to 99.5% by weight can be obtained easily with a high yield from a mixture of the isomers containing 15% by weight or more of 2,4'-isomer.
摘要:
A heat-sensitive recording material comprises a heat-sensitive color forming layer which is formed on a supporter and contains a colorless or light color leuco dyestuff as a color forming substance, a developer which develops color of the leuco dyestuff by reaction with it when heated and a sensitizer. The developer is 2,4'-dihydroxydiphenylsulfone having purity of 97 weight % or more and prepared by washing and drying crystal which is obtained by dissolving crude 2,4'-dihydroxydiphenylsulfone in an alcohol having 1 to 4 carbon atoms or in a mixture of an alcohol having 1 to 4 carbon atoms and water by heating and then cooling the solution or partially removing the solvent from the solution by distillation. The heat-sensitive recording material has excellent properties, such as reduced fog and excellent image preservation (weatherability).
摘要:
A heat sensitive recording material comprises a heat sensitive color forming layer containing a color former of a colorless or light color leuco dyestuff, a developer which develops color by reaction with the color former upon heating and is a mixture of 97 to 70 weight % of 2,4'-dihydroxydiphenylsulfone and 3 to 30 weight % of 4,4'-dihydroxydiphenylsulfone and a sensitizer. The heat sensitive color forming layer is coated on a support. The heat sensitive recording material has excellent color forming property by which sufficiently high concentration and sensitivity of the color forming are obtained and has excellent stability of the image with time.
摘要:
An oligomer removing agent for polyester-based fiber materials comprises a polyester copolymer which is obtained by polycondensation of a dibasic acid component containing 15-65 mol % of a sulfonate group-containing dibasic acid and a dihydric alcohol component containing polyethylene glycol with a molecular weight of 900-3500, and which has a 200° C. melt viscosity of 5000-23,000 mPa·s and has 10-40 mass % polyoxyethylene chains in the molecule. The oligomer removing agent is able to overcome the problems caused by deposition of polyester oligomers, when added to the dyeing bath in a dyeing step for polyester fiber materials or for fiber materials that are composites thereof with other fiber materials.
摘要:
A call control method of a call control apparatus that establishes a call connection between an originating terminal and a receiving terminal in a network in which a plurality of call control apparatuses are provided is provided. The method includes detecting whether, in the call control apparatus, call connection processing is under congestion conditions, upon detecting that call connection processing is under congestion conditions, transferring, to another call control apparatus in the network, connection information for processing a call connection request from the originating terminal and sending, to the originating terminal, call connecting apparatus identification information with which the originating terminal establishes a call connection using the other call control apparatus, and upon detecting that call connection processing is not under congestion conditions and obtaining the connection information from the call control apparatus, establishing a call connection from the originating terminal included in the connection information.
摘要:
An oligomer removing agent for polyester-based fiber materials comprises a polyester copolymer which is obtained by polycondensation of a dibasic acid component containing 15-65 mol % of a sulfonate group-containing dibasic acid and a dihydric alcohol component containing polyethylene glycol with a molecular weight of 900-3500, and which has a 200° C. melt viscosity of 5000-23,000 mPa·s and has 10-40 mass % polyoxyethylene chains in the molecule. The oligomer removing agent is able to overcome the problems caused by deposition of polyester oligomers, when added to the dyeing bath in a dyeing step for polyester fiber materials or for fiber materials that are composites thereof with other fiber materials.