摘要:
Disclosed is an acid-epoxy curing type powder coating composition which forms a coated film having excellent yellow resistance and appearance. The powder coating composition comprises: (A) an epoxy group-containing acrylic resin prepared by polymerizing the monomer mixture which comprises, (a) 35 to 65% by weight of an epoxy group-containing ethylenically unsaturated monomer, and (b) remainder amount of an ethylenically unsaturated monomer which is different from the epoxy group-containing ethylenically unsaturated monomer; (B) a polycarboxylic acid; and (C) an antioxidant having a melting point of from 50.degree. to 140.degree. C.
摘要:
Finely divided hydrophobic silica powder having a number average particle size from 3 to 10 nm and a BET surface area from 195 to 290 m.sup.2 /g is dry blended with particles of a thermosetting resin composition having a volumetric average particle size from 5 to 20 .mu.m in a proportion from 0.05 to 2.0 parts per 100 parts of the resin particles on weight basis. Sieving efficiency of the powder coating composition thus processed is remarkably improved.
摘要:
The liquid crystal display device 100 has a matrix arrangement of pixels which are formed by a liquid crystal layer, display electrodes disposed across the liquid crystal layer, and a counter electrode made of a transparent material and represents a tone (gray scale level) per pixel by applying a drive voltage to the liquid crystal layer, the drive voltage corresponding to a potential difference between each of the display electrodes and the counter electrode. The device also includes a common voltage supplying part 42 that detects a charge in a certain area T1 of the counter electrode 15 and compares a feedback voltage corresponding to the detected charge in the area, thereby providing common voltage Vcom feedback control. Consequently, flickers on the screen can be prevented by common voltage Vcom feedback control.
摘要:
A gate modulation circuit is provided. A comparator compares a triangular wave voltage of a capacitor with a second reference voltage. If the triangular wave voltage of the capacitor exceeds the second reference voltage, a conduction path is turned off. A comparator controls desired discharge to a capacitor through a discharge resistor. Based on the discharge, power voltage (high level power voltage of the scanning driver) provided to the scanning driver is modulated, and outputted from the gate modulation circuit to the scanning driver as high level power voltage of the scanning driver.
摘要:
An electrically conductive composite fiber comprising an electrically conductive layer formed of a polyester-based polymer (A) having a melting point of 200° C. or higher and containing from 23 to 33% by weight of electrically conductive carbon black, and a protective layer formed of a polyester-based polymer (B) having a melting point of 210° C. or higher, wherein the difference between the SP value of the (A) and the SP value of the (B) is adjusted to not greater than a predetermined value and the fiber strength and the elongation at break are adjusted within certain ranges. This can make it possible to obtain an electrically conductive composite fiber that has a superior antistatic performance, which is not degraded very much over a practical wearing for a long term, though it contains only a relatively small amount of electrically conductive carbon black, and that is suitable for the field of clothing such as clean room wears and working wears.
摘要:
A gate modulation circuit is provided. A comparator compares a triangular wave voltage of a capacitor with a second reference voltage. If the triangular wave voltage of the capacitor exceeds the second reference voltage, a conduction path is turned off. A comparator controls desired discharge to a capacitor through a discharge resistor. Based on the discharge, power voltage (high level power voltage of the scanning driver) provided to the scanning driver is modulated, and outputted from the gate modulation circuit to the scanning driver as high level power voltage of the scanning driver.
摘要:
The liquid crystal display device 100 has a matrix arrangement of pixels which are formed by a liquid crystal layer, display electrodes disposed across the liquid crystal layer, and a counter electrode made of a transparent material and represents a tone (gray scale level) per pixel by applying a drive voltage to the liquid crystal layer, the drive voltage corresponding to a potential difference between each of the display electrodes and the counter electrode. The device also includes a common voltage supplying part 42 that detects a charge in a certain area T1 of the counter electrode 15 and compares a feedback voltage corresponding to the detected charge in the area, thereby providing common voltage Vcom feedback control. Consequently, flickers on the screen can be prevented by common voltage Vcom feedback control.
摘要:
A fiber made of a polyester copolymer (B), wherein the polyester copolymer (B) comprises a dicarboxylic acid component and a glycol component, and the dicarboxylic acid component comprises 75 mol % or more of a terephthalic acid component, 1.0 mol % to 3.5 mol % of component (a) derived from a compound represented by formula (I), 2.0 mol % to 10.0 mol % of a cyclohexane dicarboxylic acid component (b), and 2.0 mol % to 8.0 mol % of an aliphatic dicarboxylic acid component (c). This can afford a polyester fiber that exhibits deep color property to cation dyes and disperse dyes under a normal pressure environment and is superior in color fastness to washing and color fastness to light and can secure good spinnability.
摘要:
A fiber made of a polyester copolymer (B), wherein the polyester copolymer (B) comprises a dicarboxylic acid component and a glycol component, and the dicarboxylic acid component comprises 75 mol % or more of a terephthalic acid component, 1.0 mol % to 3.5 mol % of component (a) derived from a compound represented by formula (I), 2.0 mol % to 10.0 mol % of a cyclohexane dicarboxylic acid component (b), and 2.0 mol % to 8.0 mol % of an aliphatic dicarboxylic acid component (c). This can afford a polyester fiber that exhibits deep color property to cation dyes and disperse dyes under a normal pressure environment and is superior in color fastness to washing and color fastness to light and can secure good spinnability.
摘要:
An electrically conductive composite fiber comprising an electrically conductive layer formed of a polyester-based polymer (A) having a melting point of 200° C. or higher and containing from 23 to 33% by weight of electrically conductive carbon black, and a protective layer formed of a polyester-based polymer (B) having a melting point of 210° C. or higher, wherein the difference between the SP value of the (A) and the SP value of the (B) is adjusted to not greater than a predetermined value and the fiber strength and the elongation at break are adjusted within certain ranges. This can make it possible to obtain an electrically conductive composite fiber that has a superior antistatic performance, which is not degraded very much over a practical wearing for a long term, though it contains only a relatively small amount of electrically conductive carbon black, and that is suitable for the field of clothing such as clean room wears and working wears.