摘要:
A mouth cleaning device of this invention comprises a hand held gripping part with brush and nozzle members selectively mounted thereto. The gripping part is provided with a driving rod for transmitting to the selectively mounted brush member a reciprocal turning force and for providing to the selectively mounted nozzle member a water feeding path to lead water to the nozzle member from an external water feeding means. A driving means provides a reciprocal turning force to the driving rod. A change-over switch drives the driving means only when the brush member is mounted so that, when the brush member is mounted to the gripping part, the brush member will be reciprocally turned to perform tooth brushing. When the nozzle member is mounted to the gripping part, water will be jetted out of the nozzle member to perform gum cleaning and massaging.
摘要:
An electric shaver having a trimmer wherein a base plate member is provided as fixed to shaver body between shaving and trimming elements and their driving power source allowing driving end of the source to pass therethrough. Stationary trimmer blade is fixed to the base plate member while slidably holding movable trimmer blade between them. Driving member coupled to the driving source end for reciprocally driving the movable trimmer blade and inner shaving blade assembly is supported on the base plate member slidably as thereby guided.
摘要:
A block copolymer mixture containing a branched block copolymer characterized in that it has at least three types of polymer blocks with different molecular weights, each comprising a vinyl aromatic hydrocarbon as monomer units, the molecular weight distribution of a mixture of the polymer blocks S1, S2 and S3 each comprising a vinyl aromatic hydrocarbon as monomer units is within a specific range, and in a gel permeation chromatogram of the mixture of three types of the polymer blocks S1, S2 and S3, M1/M3 and M2/M3 are within specific ranges, where M1, M2 and M3 are peak top molecular weights of the respective polymer blocks.
摘要:
A heat shrinkable film and a heat shrinkable multilayer film excellent in balance of heat resistance, high shrinkability, high shrinkability particularly at a low temperature, resistance to spontaneous shrinkage, chemical resistance and rigidity, are provided. A heat shrinkable film and a heat shrinkable multilayer film obtained from a resin composition comprising an aromatic vinyl compound/conjugated diene block copolymer having a micro phase separation structure comprising a soft phase and a hard phase and further having a specific structure and a specific dynamic viscoelasticity spectrum and a styrene polymer having a syndyotactic structure, in a specific proportion.
摘要:
A resin composition characterized by comprising from 5 to 95 wt % of an aromatic vinyl compound/olefin random copolymer (A) which has an aromatic vinyl compound content of from 1 to 99 mol % and has a head-to-tail chain structure composed of two or more aromatic vinyl compound units, and from 95 to 5 wt % of an &agr;-olefin type polymer (B) and/or an aromatic vinyl compound type polymer (C) (provided that it is neither a medical material nor a medical device), which contains substantially no chlorine and is excellent in the impact resistance, moldability, weather resistance and chemical resistance and which is useful for an injection molded product, an extrusion molded product, a film, a sheet, etc. Further, it provides an excellent damping material.
摘要:
To provide a block copolymer composition excellent in balance of transparency, impact resistance, etc. in the form of not only an excluded product and a blow molded product but also an injection molded product.A linear block copolymer composition having at least three types of polymer blocks with different molecular weights each comprising a vinyl aromatic hydrocarbon as monomer units, wherein the molecular weight distribution of a mixture of the polymer blocks is within a specific range, and in GPC of the mixture, M1/M2 is within a specific range, where M1 is the peak top molecular weight corresponding to a peak at which the peak top molecular weight becomes maximum among peaks forming a proportion of the area of at least 30% to the whole peak area, and M2 is the peak top molecular weight corresponding to a peak at which the peak top molecular weight becomes minimum among peaks at which the peak top molecular weight is at most 50,000 and which form a proportion of the area of at least 20% to the whole peak area.
摘要:
To provide a block copolymer mixture containing a branched block copolymer such that it is excellent in balance between transparency and impact resistance, and a molded product formed from it by injection molding particularly under a high shearing force is less likely to have anisotropy and is thereby excellent in impact resistance. A block copolymer mixture containing a branched block copolymer characterized in that it has at least three types of polymer blocks with different molecular weights, each comprising a vinyl aromatic hydrocarbon as monomer units, the molecular weight distribution of a mixture of the polymer blocks S1, S2 and S3 each comprising a vinyl aromatic hydrocarbon as monomer units is within a specific range, and in a gel permeation chromatogram of the mixture of three types of the polymer blocks S1, S2 and S3, M1/M3 and M2/M3 are within specific ranges, where M1, M2 and M3 are peak top molecular weights of the respective polymer blocks.
摘要:
A medical material and a medical device comprising an aromatic vinyl compound/&agr;-olefin random copolymer according to the present invention, are materials which contain substantially no chlorine and which have not only excellent flexibility, transparency and proper resilience but also radiation resistance and biocompatibility, and they are hence advantageously used especially in the medical field.
摘要:
To provide a block copolymer composition having a good balance in transparency and impact resistance, and particularly having an excellent impact resistance, by making a molded product of injection molding under high sear condition in such a manner as to hardly generate anisotropy. A block copolymer composed of a hard segment block comprising a block made mainly of a vinyl aromatic hydrocarbon and a soft segment block comprising a block made mainly of a conjugated diene, characterized by having a remarkably improved impact resistance without degrading transparency in respect of not only an extrusion-molded product and a blow-molded product but also an injection-molded product, by blending two kinds of block copolymers having a hard segment block of a specific structure.
摘要:
Novel antibiotics of the following structure ##STR1## wherein R represents a moiety selected from the group consisting of hydrogen, --COCH.sub.2 NH.sub.2, --COCH.sub.2 NHCONH.sub.2 and --COCH.sub.2 NHCHO;process for preparation thereof; and biologically pure culture for use therein.