摘要:
There are disclosed a polymer packing material suitable for liquid chromatography and a producing method thereof. The polymer packing material having a polymer particle based on a styrene skeleton with monodispersed particle distribution can be obtained by hydrophilic treatment of an inner surface of a micropore existing in a fine pore of the polymer packing material, or subsequent introduction of a hydrophobic group into the inner hydrophilic surface by chemical modification. A method of producing the polymer packing material suitable for liquid chromatography includes the step of polymerizing glycerol dimethacrylate as a crosslinking agent and 2-ethylhexl methacrylate as a monomer according to a two-step swelling polymerization process. Alternatively, the producing method includes the step of crosslinking and polymerizing only glycerol dimethacrylate to form a polymer, and introducing the hydrophobic group into the polymer by chemical modification.
摘要:
A method of producing a polymer packing material for liquid chromatography includes the steps of swelling seed polymer particles to form swelled particles, polymerizing monomers in the swelled particles under existence of diluent, and removing the diluent to form porous polymer particles, wherein the step of polymerizing the monomers is conducted under existence of a compound having a conjugated double bond not reactive with the monomers and having a molecular weight of 100-500. Alternatively, the polymerization process may be conducted by an oxidation reduction polymerization process. Further, the porous polymer particles obtained after removal of the diluent may be subjected to a heat treatment process at a temperature of 100.degree. C. or higher.
摘要:
The present invention provides an information reproducing apparatus which can directly and intuitively designate a reproduction point, as desired by a user, on the basis of a change in level of a visually-provided information amount. An optical disk reproducing apparatus 100 reads content data from an optical disk 10 loaded and has a reproduction-time specification operating unit 220 which is formed by a movable operator MF. The reproduction-time specification operating unit 220 displays a change in amount of information on a beat according to elapsed time in the entire content data and includes a movable operator MF which is used to specify reproduction time of the optical disk 10 while being movable in an operation area OF corresponding to a display area A1. The reproduction-time specification operating unit 220 moves the movable operator MF such that the center of the movable operator MF corresponds to the reproduction time of the contents data in the beat density data displayed on a display unit 221.
摘要:
The present invention provides a novel polymer that can impart a moisturized feeling to the hair and skin after use. A polymer comprising an amphoteric monomer represented by the following general formula (I) and a cationic monomer represented by the following general formula (II) as the essential constituent monomers: (wherein, R1 represents a hydrogen atom or a methyl group; R2 and R3 each independently represent an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, a phenyl group, or a —(CH2CH2O)nR7 group (n is an integer of 1 to 50; and R7 represents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or a phenyl group); R4 represents an alkylene group having 1 to 3 carbon atoms; A represents an oxygen atom or NR8 (R8 represents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, a phenyl group, or a —(CH2CH2O)nR9 group (n is an integer of 1 to 50; R9 represents a hydrogen atom, an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or a phenyl group)); and B represents an alkylene group having 1 to 4 carbon atoms), and (wherein, R5 and R6 each independently represent a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms; and Y− represents a monovalent inorganic or organic anion).
摘要:
To provide a skin cleanser having superior lather quality at cleansing and improved moist and soft feeling after cleansing. A skin cleansing composition comprising an amphoteric terpolymer which consists of, 5 to 15 mass % of an anionic monomer (ex. acrylic acid), 15 to 40 mass % of a cationic monomer (ex. dimethyldiallylammonium chloride) and 45 to 80 mass % of a nonionic monomer (ex. acrylamide).
摘要:
Both of one audio information and another audio information are recorded on a same information record medium. An audio information reproducing apparatus is provided with: a detecting device for detecting said one audio information and said another audio information from the information record medium and also detecting a time period required for one beat of the detected another audio information; and an accumulating device for accumulating said one audio information detected from the information record medium to thereby continue reproducing and outputting said one audio information through the accumulating device. The audio information reproducing apparatus is also provided with a controlling device for controlling the detecting device to detect said another audio information and the time period required for one beat, within a time duration that the accumulated one audio information is being reproduced and outputted through the accumulating device.
摘要:
A process for polymerizing an alpha-olefin using either a catalyst formed by contacting a highly active solid titanium catalyst component, an organo-metallic compound of a metal of Group 1 to 3 of the periodic table, an organic halogen compound or a transition metal compound, and an organosilicon compound or a sterically hindered amine in an inert medium in the absence of an alpha olefin, or a catalyst prepared by preliminarily polymerizing an alpha olefin in the presence of a catalyst comprising the above four catalyst components, provided that the last one is an optional component. This process achieves the industrially advantage that the catalysts are highly active, and give a polymer having excellent stereoregularity.
摘要:
Herein disclosed is a method for increasing the width of a cast piece during continuous operation. The method comprises stopping pouring a molten metal into a mold, inserting a frame including a pair of opposite side plate members into the mold so that the lower ends of the members are dipped in the molten metal, pouring the molten metal into a cavity defined by said frame, and withdrawing the cast piece together with said frame to obtain a cast piece having a desired width.
摘要:
A mixer device, a player and a reproduction system and the like are provided which enable a user to acknowledge at the player side whether reproduction signals being reproduced with the player are in an on-air state (whether it is output from the mixer device side) and can prevent mistaken operations by the user. The mixer device 20 is connected to one or more players 10 and outputs reproduction signals being reproduced with the player 10 to an output device 30, and further outputs an on-air signal indicating that the reproduction signals are output to the output device 30 (being in an on-air state) to the player 10 as input source of the reproduction signals.
摘要:
It is intended to provide a cleansing cosmetic composition that quickly removes makeup from the skin, is easily applicable onto the skin without dripping from the hand or running on the face during application, and can freshen the skin because of being washed off thoroughly. The present invention provides a cleansing cosmetic composition comprising (1) 1 to 15% by mass of silicone oil, (2) 1 to 15% by mass of volatile hydrocarbon oil, (3) 5 to 20% by mass of dihydric glycol, (4) 5 to 40% by mass of polyoxyethylene glyceryl fatty acid ester, and (5) 15 to 88% by mass of water, wherein the weight ratio between the silicone oil (1) and the volatile hydrocarbon oil (2) ((1)/(2)) falls within the range of 0.3 to 3 and the composition has a viscosity of 100 to 500 mPas at 25° C.