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    • 22. 发明授权
    • Thermoplastic polymer composition
    • 热塑性聚合物组成
    • US5571865A
    • 1996-11-05
    • US440123
    • 1995-05-12
    • Makoto NishikawaMizuho MaedaHiromichi NakataHideo TakamatsuYoshio Hirayama
    • Makoto NishikawaMizuho MaedaHiromichi NakataHideo TakamatsuYoshio Hirayama
    • C08L23/12C08L23/16C08L53/02C08F297/04C08L53/00
    • C08L23/12C08L23/16C08L53/02
    • A thermoplastic polymer composition which comprises100 parts by weight of polypropylene (1);5 to 100 parts by weight of a hydrogenated block copolymer (2) which has at least one block A, at least one block B and at least one block C and which has a number average molecular weight of not higher than 700,000 wherein the block A consists essentially of a butadiene polymer having a number average molecular weight of 2500 to 200,000 and a vinyl bond content of not higher than 20%, the block B consists essentially of a polymer of isoprene and butadiene at a ratio by weight of 30:70 to 100:0 and has a number average molecular weight of 30,000 to 300,000 and a vinyl bond content of not higher than 20%, and the block C consists essentially of a polymer of isoprene and butadiene at a ratio by weight of 0:100 to 100:0 and has a number average molecular weight of not higher than 200,000 and a vinyl bond content of not less than 40%; and0 to 100 parts by weight of an ethylene/propylene rubber wherein the ratio of the melt viscosity of hydrogenated block copolymer (2) to the melt viscosity of the polypropylene (1) as determined at 200.degree. C. at a shear rate of 1220 second.sup.-1, is in the range of 0.5:1 to 10:1.
    • 一种热塑性聚合物组合物,其包含100重量份的聚丙烯(1); 5至100重量份的氢化嵌段共聚物(2),其具有至少一个嵌段A,至少一个嵌段B和至少一个嵌段C,其数均分子量不高于700,000,其中嵌段A 基本上由数均分子量为2500〜200,000,乙烯基键含量为20%以下的丁二烯聚合物组成,嵌段B​​主要由异戊二烯和丁二烯的聚合物组成,重量比为30:70〜 100:0,数均分子量为30,000〜300,000,乙烯基键含量为20%以下,嵌段C主要由异戊二烯和丁二烯的聚合物组成,重量比为0:100〜100 :0,数均分子量不大于20万,乙烯基键含量不小于40%; 和0至100重量份的乙烯/丙烯橡胶,其中氢化嵌段共聚物(2)的熔体粘度与聚丙烯(1)的熔体粘度的比例在200℃下以1220的剪切速率测定 秒-1,在0.5:1到10:1的范围内。
    • 25. 发明申请
    • RUBBER COMPOSITION AND CROSSLINKED OBJECT
    • 橡胶组合物和交联物体
    • US20100152368A1
    • 2010-06-17
    • US12067821
    • 2006-09-21
    • Yoshio HirayamaKei HirataKoichi WadaKenji Shachi
    • Yoshio HirayamaKei HirataKoichi WadaKenji Shachi
    • C08L47/00
    • C08L21/00C08K3/36C08K5/548C08L9/00C08L13/00C08L15/00C08L2666/02
    • The present invention relates to a rubber composition comprising 100 parts by mass of a solid diene-based rubber (1), 5 to 150 parts by mass of silica (2), 0.1 to 50 parts by mass of a liquid diene-based rubber (3) which is modified with an unsaturated carboxylic acid and/or derivative thereof and has a number average molecular weight of 5000 to 100000, and further 0,1 to 50 parts by mass of an unmodified liquid diene-based rubber (4) having a number average molecular weight of 5000 to 100000 with respect to 100 parts by mass of the solid diene-based rubber (1) and/or 1.5 to 14.0 parts by mass of water (5) with respect to 100 parts by mass of silica (2), and a crosslinked product obtained by crosslinking the rubber composition.A rubber composition obtained by the present invention is improved in processability when silica is added and mixed with a diene-based rubber and is excellent in dynamic properties after crosslinking.
    • 本发明涉及一种橡胶组合物,其包含100质量份固体二烯系橡胶(1),5〜150质量份二氧化硅(2),0.1〜50质量份液态二烯系橡胶( 3),其用不饱和羧酸和/或其衍生物改性,数均分子量为5000〜100000,进一步为0.1〜50质量份未改性的液体二烯类橡胶(4),其具有 相对于100质量份的固体二烯系橡胶(1),数均分子量为5000〜100000,和/或相对于100质量份的二氧化硅(2)为1.5〜14.0质量份的水(5) )和通过使橡胶组合物交联而得到的交联物。 通过本发明获得的橡胶组合物在加入二氧化硅并与二烯系橡胶混合时的加工性提高,交联后的动态性能优异。
    • 29. 发明授权
    • Process of producing magnetic recording media
    • 制作磁记录媒体的过程
    • US4548682A
    • 1985-10-22
    • US618512
    • 1984-06-08
    • Koichi YoshidaYoshio HirayamaYasuo OkaTakashi Kajiyama
    • Koichi YoshidaYoshio HirayamaYasuo OkaTakashi Kajiyama
    • C25D11/18G11B5/84C25D11/20
    • C25D11/18G11B5/84Y10S205/917
    • A magnetic recording medium having excellent magnetic properties and a uniform recording envelope suitable for, in particular, high-density recording is obtained by packing a magnetic substance in the micro pores of anodic oxide film formed on an aluminum substrate by subjecting the same to an anodic oxidation treatment to produce an anodic oxide film having a thickness of at least 4 .mu.m. The recording medium can be improved by immersing the anodized aluminum substrate in an acid or alkali bath to chemically dissolve a part of the anodic oxide film, and thereby enlarge the micro pores in the anodic oxide film to a pore diameter in the range of 300 .ANG. to 1,400 .ANG., optionally applying an electric current to the aluminum substrate in the immersion bath if necessary to control the thickness of the barrier layer in the anodic oxide film, before subjecting the treated substrate to an electrolytic treatment in a bath containing ions of a magnetic substance to deposit the magnetic substance in the enlarged micro pores. Thereafter, the surface of the anodic oxide film, and any excess deposited magnetic material thereon, is physically ground to expose the packed magnetic substance at the surface of the film.
    • 通过将形成在铝基板上的阳极氧化膜的微孔中的磁性物质包裹在阳极氧化膜上,获得具有优异的磁特性和适用于特别是高密度记录的均匀记录膜的磁记录介质 进行氧化处理,制作厚度为4μm以上的阳极氧化膜。 可以通过将阳极氧化铝基板浸渍在酸或碱浴中以化学溶解阳极氧化膜的一部分,从而将阳极氧化膜中的微孔扩大到300AG范围内的孔径,可以改善记录介质 如果需要,可以在浸渍浴中的铝基板上施加电流以控制阳极氧化膜中的阻挡层的厚度,然后在经过处理的基板在含有磁性离子的浴中进行电解处理 物质将磁性物质沉积在扩大的微孔中。 此后,阳极氧化膜的表面和其上的任何过量的沉积的磁性材料被物理研磨以在膜的表面露出包装的磁性物质。