摘要:
This invention relates to hydroxyalkylated chitosan solution characterized in that a hydroxyalkylated chitosan and an organic acid or its derivative are contained in an aprotic polar solvent. This invention also relates to a coating process of a substrate, which is characterized by a step of causing the hydroxyalkylated chitosan solution to adhere onto a surface of the substrate, and another step of heating the substrate, which has been obtained in the first-mentioned step, at 100° C. or higher for 1 second or longer. This invention can provide a one-pack solution of a chitosan derivative, which is free from crosslinking and stable at room temperature, can form a chitosan coating excellent in waterproofness after heated and dried, and is suited for the coating of a hydrophobic or lipophilic surface. This invention also provides a coating process of a substrate, which makes use of the one-pack solution.
摘要:
A purified chitin has a total content of fatty acids and salts thereof not higher than 0.2 wt. % in terms of fatty acids. The purified chitin can be produced by washing a chitin with at least one solvent selected from the group consisting of organic solvent and water-containing organic solvents such that a total content of fatty acids and salts thereof is lowered at least to 0.2 wt. % in terms of fatty acids.
摘要:
A seed colorant useful especially in coloring seeds to distinguish same from those to be used for foods is formed of an aqueous medium such as water, a dye and/or pigment of a desired hue, and a binder resin composed of the salt of chitosan and an organic acid. The seed colorant may additionally contain spherical resin particles.
摘要:
A seed colorant useful especially in coloring seeds to distinguish same from those to be used for foods is formed of an aqueous medium such as water, a dye and/or pigment of a desired hue, and a binder resin composed of the salt of chitosan and an organic acid. The seed colorant may additionally contain spherical resin particles.
摘要:
A stereoscopic display includes an image displayer. The image displayer includes a display that is configured to sequentially display a right-eye image and a left-eye image. The display includes a first region that includes first rows and a second region that includes second rows. A method of driving the stereoscopic display includes sequentially repeating: writing first image data to the second region when the first region is in an image displaying state; setting the second region to the image displaying state and the first region to an image not-displaying state after the image data is written to the second region; writing second image data to the first region when the second region is in the image displaying state; and setting the first region to the image displaying state and the second region to the image not-displaying state after the second image data is written to the first region.
摘要:
A heat sink 161 includes a heat receiving block 61a; a plurality of fins 61b respectively extending upward from the heat receiving block 61a and lined up with intervals therebetween; and a coupling member 163 attached to the plurality of fins 61b and capable of reducing the vibrations of the plurality of fins 61b. According to the above structure, the vibrations of the fins of a heat sink can be reduced.
摘要:
Provided is a method of driving an information display panel in which at least two types of display media comprised of particle groups containing chargeable particles are sealed between two opposed substrates, at least one substrate being transparent, and a voltage is applied across a pair of opposed pixel electrodes formed by providing conductive films to the respective substrates to move the display media, thereby displaying an information image, wherein, in a series of alternating voltage pulses applied at the time of deleting the information image displayed on the information display panel, there is provided an OFF time, which is a period during which application voltage of 0 volt is maintained during change of polarity of each pulse voltage. With this configuration, it is possible to provide a method of driving an information display panel capable of achieving the longer lifetime of a battery at the time when the panel is driven by the battery and of preventing drop of the voltage from a power supply, by reducing a peak value of the electric current occurring at the time of deleting with the alternating voltage.
摘要:
Disclosed are an alkoxysilyl-containing A-B block copolymer formed from (meth)acrylate monomers as constituent monomers, characterized in that a polymer block of A chain has a number average molecular weight (Mn) of from 1,000 to 50,000 and a molecular weight distribution (Mw/Mn) of not greater than 1.6, a polymer block of B chain comprises alkoxysilyl-containing (meth)acrylate units as constituent monomer units, and the A-B block copolymer as a whole has a molecular weight distribution of not greater than 1.6, a process for the production of the block copolymer, a resin-treated pigment, and a pigment dispersion.
摘要:
A video display apparatus includes pixels arranged in lines, a scanning signal transferor that supplies scanning signals to the pixels, and a data signal transferor that supplies a video signal to the pixels. A first controller supplies the video signal to the data signal transferor and causes the scanning signal transferor to supply a first scanning signal that corresponds to a first picture to the lines in the display from a head line to a final line and a second scanning signal that corresponds to a second picture subsequent to the first picture to the lines in the display from the final line to the head line.
摘要:
A driving method of an alternating-current surface discharge type PDP is provided. In the initializing period. an operation that applies a predetermined voltage for causing discharge regardless of the presence or absence of the former discharge to a scan electrode and causes the initializing discharge in the discharge cell is assumed as a forcibly initializing operation. In the address period, the time when a scan pulse is applied to the scan electrode and an address pulse is applied to the data electrode is assumed to be address time. In each of discharge cells, the forcibly initializing operation is performed in one of a plurality of fields, and the address time in the address period of a field that does not, undergo the forcibly initializing operation is set to be longer than the address time in the address period of a field that undergoes the forcibly initializing operation.