摘要:
A method for producing a solid catalyst component for olefin polymerization produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity. The method includes a first step that brings a magnesium compound, a tetravalent titanium halide compound, and one or more first internal electron donor compounds selected from specific aromatic dicarboxylic diesters into contact with each other to effect a reaction, followed by washing, a second step that brings a tetravalent titanium halide compound and one or more second internal electron donor compounds into contact with a product obtained by the first step to effect a reaction, followed by washing, and a third step that brings one or more third internal electron donor compounds into contact with a product obtained by the second step to effect a reaction.
摘要:
A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, and a compound represented by the following formula (1): R1O—C(═O)—O—Z—OR2, and an olefin polymerization catalyst includes the solid catalyst component, an organoaluminum compound, and an optional external electron donor compound. An olefin polymer that has a moderate molecular weight distribution while maintaining high stereoregularity can be produced by utilizing the solid catalyst component and the olefin polymerization catalyst.
摘要:
An olefin polymer that is obtained using an olefin polymerization catalyst that includes a solid catalyst component for olefin polymerization that includes titanium, magnesium, a halogen, and an ester compound (A) represented by the following formula (1): R1R2C═C(COOR3)(COOR4), an organoaluminum compound, and an optional external electron donor compound, exhibits primary properties (e.g., molecular weight distribution and stereoregularity) similar to those of an olefin polymer obtained using a solid catalyst component that includes a phthalic ester as an electron donor.
摘要:
A printing apparatus comprises: a storage unit configured to store a power usage of each of one or more other printing apparatuses connected to a power supply system to which the printing apparatus is connected; and a print execution controller. The print execution controller is configured to: keep track of which of the other printing apparatuses are in printing operation; calculate, upon receipt of a print instruction from any of the external apparatuses, a total of power usages of the other printing apparatuses that are in printing operations; inhibit the printing apparatus from printing when an expected power exceeds a predetermined allowable value, the expected power is a sum of the calculated total of power usages and the power usage of the printing apparatus during the printing operation; and allow the printing apparatus to print when the expected power is equal to or below the predetermined allowable value.
摘要:
A thin film EL element has a glass substrate, a pair of electrode layers formed on this glass substrate, and an electroluminescent layer sandwiched between these electrode layers. The glass substrate is of non-alkali type and has volume resistivity of 10.sup.6 ohm-cm or greater at 600.degree. C., alkali content of 0.5 wt % or less, and strain point of 600.degree. C. or higher.
摘要:
A method of manufacturing a thin film electroluminescent (EL) device in which an electron beam is directed to a pellet of a substance containing an additive agent, and the substance is evaporated and deposited on a substrate and a change per unit time of the growing deposit is monitored by a sensor, comprising the steps of (1) controlling energy of the electron beam in accordance with an output of the sensor during a first time interval for adjusting an evaporation rate of the substance to a specified rate, (2) maintaining the controlled energy of the electron beam constant during a second time interval, larger than the first time interval and alternatively repeating steps (1) and (2).
摘要:
A thin-film EL panel of the layer structure with transparent electrodes and back electrodes sandwiching therebetween insulative layers and a light-emitting layer and forming display picture elements on the panel is characterized as having the transparent electrodes shaped differently at these display picture elements and other places.
摘要:
A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, and a compound represented by the following formula (1): R1O—C(═O)—O—Z—OR2, and an olefin polymerization catalyst includes the solid catalyst component, an organoaluminum compound, and an optional external electron donor compound. An olefin polymer that has a moderate molecular weight distribution while maintaining high stereoregularity can be produced by utilizing the solid catalyst component and the olefin polymerization catalyst.
摘要:
A printing apparatus comprises: a storage unit configured to store a power usage of each of one or more other printing apparatuses connected to a power supply system to which the printing apparatus is connected; and a print execution controller. The print execution controller is configured to: keep track of which of the other printing apparatuses are in printing operation; calculate, upon receipt of a print instruction from any of the external apparatuses, a total of power usages of the other printing apparatuses that are in printing operations; inhibit the printing apparatus from printing when an expected power exceeds a predetermined allowable value, the expected power is a sum of the calculated total of power usages and the power usage of the printing apparatus during the printing operation; and allow the printing apparatus to print when the expected power is equal to or below the predetermined allowable value.
摘要:
An image processing apparatus having a data converting unit which converts inputted image information into image data which can be outputted by an external output apparatus and an output control unit which outputs the converted image data to the output apparatus, includes: a storing unit which sequentially stores the image data in parallel with the output of the image data from the data converting unit to the output control unit; and an instructing unit which selects a desired one of the plurality of image data sequentially stored in the storing unit and instructs the output control unit to re-output the selected image data. When the re-output is instructed, the output control unit transfers the selected image data to the output apparatus from the storing unit.