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21 条记录 (耗时 0.021 秒)

    Biaxially oriented polyester film
    1.
    发明授权
    Biaxially oriented polyester film 失效
    双轴取向聚酯薄膜

    公开(公告)号：US4818581A

    公开(公告)日：1989-04-04

    申请号：US89571

    申请日：1987-08-26

    申请人： Hideo Katoh ,  Hisashi Hamano ,  Kinji Hasegawa ,  Yoshihiro Noumi

    发明人： Hideo Katoh ,  Hisashi Hamano ,  Kinji Hasegawa ,  Yoshihiro Noumi

    IPC分类号： C08J5/18 ,  C08K3/36 ,  B32B27/00

    CPC分类号： C08J5/18 ,  C08K3/36 ,  C08J2367/02 ,  Y10S428/90 ,  Y10T428/24372 ,  Y10T428/2982 ,  Y10T428/31786

    摘要： A biaxially oriented polyester film formed from an intimate mixture comprising (1) an aromatic polyester, and (2) 0.01 to 4% by weight, based on the aromatic polyester, of spherical fine particles of silica having (a) an average particle diameter of 0.05 to 4 .mu.m, (b) a particle diameter ratio, defined by the ratio of maximum diameter of minimum diameter, of from 1.0 to 1.2, and (c) a relative standard deviation (.sigma.) of particle size, of up to 0.5. A biaxially oriented polyester film formed from an intimate mixture comprising (1) an aromatic polyester, (2) 0.005 to 3% by weight, based on the aromatic polyester, of spherical fine particles of silica having the same properties as the above-mentioned (a), (b) and (c), and (3) 0.005 to 3% by weight, based on the aromatic polyester, of inert fine particles having an average particle diameter of 0.01 to 3 .mu.m and not exceeding the average particle diameter of the spherical fine particles of silica. The biaxially oriented films are useful for a magnetic recording medium.

    摘要翻译： 一种由包含（1）芳族聚酯和（2）基于芳族聚酯的0.01至4重量％的二氧化硅球形细颗粒形成的双轴取向聚酯膜，其具有（a）平均粒径为 0.05至4μm，（b）由最小直径的最大直径的比定义的粒径比为1.0至1.2，和（c）粒径的相对标准偏差（sigma）至多0.5 。 一种由紧密混合物形成的双轴取向聚酯膜，其包含（1）芳族聚酯，（2）0.005至3重量％的基于芳族聚酯的球形二氧化硅微粒，其具有与上述（ a），（b）和（c），（3）0.005〜3重量％的芳族聚酯，平均粒径为0.01〜3μm的惰性微粒，不超过平均粒径 的二氧化硅球形细颗粒。 双轴取向膜可用于磁记录介质。

    Biaxially oriented aromatic polyester film
    2.
    发明授权
    Biaxially oriented aromatic polyester film 失效
    双轴取向芳族聚酯薄膜

    公开(公告)号：US4761327A

    公开(公告)日：1988-08-02

    申请号：US003231

    申请日：1987-01-14

    申请人： Hisashi Hamano ,  Kinji Hasegawa ,  Yoshihiro Noumi ,  Hideo Katoh

    发明人： Hisashi Hamano ,  Kinji Hasegawa ,  Yoshihiro Noumi ,  Hideo Katoh

    IPC分类号： B29C47/00 ,  B29C55/00 ,  C08J5/18 ,  C08L67/02 ,  B32B27/06

    CPC分类号： C08J5/18 ,  B29C47/0004 ,  B29C55/005 ,  C08L67/02 ,  B29C47/0011 ,  B29C47/0021 ,  B29K2067/00 ,  B29K2105/16 ,  C08J2367/02 ,  Y10S428/91 ,  Y10T428/31786

    摘要： A biaxially oriented film formed from a intimate mixture comprising (I) an aromatic polyester, (II) 0.005 to 1.0% by weight, based on the aromatic polyester, of fine particles of a silicone resin having (a) a composition represented by the following formula (A)R.sub.x SiO.sub.2-x/2 (A)wherein R represents a hydrocarbon group having 1 to 7 carbon atoms, and x is a number of from 1 to 1.2, (b) a volume shape factor (f), represented by the following formula (B), of more than 0.4 but not exceeding .pi./6f=V/D.sup.3 (B)wherein V is the average volume (.mu.m.sup.3) of the particles and D is the average maximum particle diameter (.mu.m) of the particle, and (c) an average particle diameter of 0.3 to 4 .mu.m. The film optionally contains (III) 0.005 to 1% by weight, based on the aromatic polyester, of inert fine particles having an average particle diameter of 0.01 to 1 .mu.m but being smaller than the average particle diameter of the silicone resin particles. The film is useful for a base film on a magnetic recording medium.

    摘要翻译： 一种由紧密混合物形成的双轴取向膜，其包含（I）芳族聚酯，（II）基于芳族聚酯的0.005-1.0重量％的有机硅树脂的细颗粒，其具有（a）由以下组成表示的组成 式（A）RxSiO 2-x / 2（A）其中R表示碳原子数1〜7的烃基，x为1〜1.2的数，（b）体积形状系数（f） （B）大于0.4但不超过pi / 6f = V / D3（B）其中V是颗粒的平均体积（μm3），D是平均最大粒径（μm） 粒子，（c）平均粒径为0.3〜4μm。 该膜任选地含有（I）0.005-1％重量的芳族聚酯，平均粒径为0.01-1μm但小于硅树脂颗粒的平均粒径的惰性微粒。 该膜对于磁记录介质上的基膜是有用的。

    Biaxially oriented film of polyethylene-2,6-naphthalenedicarboxylate
    5.
    发明授权
    Biaxially oriented film of polyethylene-2,6-naphthalenedicarboxylate 失效
    聚2,6-萘二甲酸乙二酯双轴取向薄膜

    公开(公告)号：US5631063A

    公开(公告)日：1997-05-20

    申请号：US358763

    申请日：1994-12-19

    申请人： Takao Chujo ,  Masanori Nishiyama ,  Hisashi Hamano

    发明人： Takao Chujo ,  Masanori Nishiyama ,  Hisashi Hamano

    IPC分类号： B29C55/14 ,  C08J5/18 ,  B32B3/26 ,  B32B27/36 ,  C08G63/189

    CPC分类号： C08J5/18 ,  B29C55/143 ,  C08J2367/02 ,  Y10T428/24355 ,  Y10T428/24372

    摘要： A biaxially oriented film of a polyethylene-2,6-naphthalenedicarboxylate, which (A) has a Young's modulus of at least 800 kg/mm.sup.2 in the longitudinal direction and a Young's modulus of at least 500 kg/mm.sup.2 in the transverse direction, the Young's modulus in the longitudinal direction being greater than the Young's modulus in the transverse direction, (B) satisfies the following relationships between an elongation S.sub.M (%) in the longitudinal direction per a load of 1 kg/mm.sup.2 at 120.degree. C. and the Young's modulus Y.sub.M (kg/mm.sup.2) in the longitudinal direction,-0.001Y.sub.M +0.89

    摘要翻译： 聚乙烯-2,6-萘二甲酸酯的双轴取向膜（A）的纵向杨氏模量为至少800kg / mm2，横向的杨氏模量为至少500kg / mm2， 长度方向的杨氏模量大于横向的杨氏模量，（B）满足以下关系：在120℃下，负荷为1kg / mm 2的纵向的伸长率SM（％）与 YM为1200 kg / mm2以下时，纵向的杨氏模量YM（kg / mm2）为-0.001YM + 0.89

    Magnetic recording tape comprising a polyethylene-2,6-napthalate substrate, magnetic metal thin film, and a backcoat layer
    10.
    发明授权
    Magnetic recording tape comprising a polyethylene-2,6-napthalate substrate, magnetic metal thin film, and a backcoat layer 失效
    磁记录带，其包含聚2,6-萘二甲酸乙二醇酯基材，磁性金属薄膜和背涂层

    公开(公告)号：US5431983A

    公开(公告)日：1995-07-11

    申请号：US288897

    申请日：1994-08-10

    申请人： Masami Etchu ,  Hisashi Hamano ,  Masahiro Hosoi ,  Ieyasu Kobayashi ,  Yasuhiro Saeki

    发明人： Masami Etchu ,  Hisashi Hamano ,  Masahiro Hosoi ,  Ieyasu Kobayashi ,  Yasuhiro Saeki

    IPC分类号： G11B5/73 ,  G11B5/735 ,  G11B5/00

    CPC分类号： G11B5/7315 ,  G11B5/735 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24967 ,  Y10T428/25 ,  Y10T428/265 ,  Y10T428/269 ,  Y10T428/31678 ,  Y10T428/31681 ,  Y10T428/31786

    摘要： A magnetic recording tape, in particular a VTR tape, comprising;(A) a substrate composed of a biaxially oriented polyethylene-2,6-naphthalate film of which(a) the Young' modulus in the longitudinal direction is at least 650 kg/mm.sup.2, the Young' modulus in a transverse direction is the same as, or greater than, the Young's modulus in the longitudinal direction,(b) the heat shrinkage in the transverse direction is in the range of 1.0 to 3.0% when treated at 100.degree. C. for 30 minutes,(c) the surface roughness, Ra, is not more than 0.005 .mu.m, and(d) the amount of bled-out oligomer is not more than 0.01 area % when treated in air at 160.degree. C. for 5 minutes,(B) a thin magnetic metal layer having a thickness of 100 to 1,500 nm and formed on one surface of the substrate, and(C) a lubricant-containing thin organic polymer layer having a thickness of not more than 1 .mu.m and formed on the other surface of the substrate, said lubricant being in the form of particles which have an average particle diameter of 0.1 to 2.0 .mu.m. This magnetic recording tape has high coercive force and excellent running durability and is capable of recording data at high density and high sensitivity for a long period of time.

    摘要翻译： 磁记录带，特别是VTR带，包括： （A）由双轴取向的聚2,6-萘二甲酸乙二醇酯薄膜构成的基材，其中（a）纵向的杨氏模量为至少650kg / mm2，横向的杨氏模量相同 大于或等于长度方向的杨氏模量，（b）当在100℃下处理30分钟时，横向的热收缩率为1.0-3.0％，（c）表面粗糙度 ，Ra为0.005μm以下，（d）在空气中在160℃下处理5分钟时，（b）出料低聚物的量不大于0.01面积％，（B）薄的磁性金属层 厚度为100〜1500nm，形成在基板的一个表面上，（C）厚度不大于1μm的润滑剂的有机聚合物层，形成在基板的另一个表面上， 润滑剂为平均粒径为0.1〜2.0μm的颗粒形式。 该磁记录带具有高的矫顽力和优异的运行耐久性，并且能够长时间以高密度和高灵敏度记录数据。