Dust cleaner and dust cleaning method
    1.
    发明授权
    Dust cleaner and dust cleaning method 失效
    除尘器和除尘方法

    公开(公告)号:US5351354A

    公开(公告)日:1994-10-04

    申请号:US840342

    申请日:1992-02-24

    CPC分类号: B08B11/02 B08B5/023

    摘要: To improve dust removing performance and to prevent re-adhesion of dust in dust cleaner for removing dust adhering to the surface of an object such as a timepiece component by effecting blow-off dust removal and charge elimination by the use of a clean compressible fluid and an electric static ion eliminator. A clean compressible fluid is discharged from a clean compressible fluid nozzle to an object. When the object is an electro-statically charged article, an electric static ion mix clean compressible fluid containing electric static ions generated from an electric static ion eliminator is discharged to the object. It is possible to employ the structure wherein the object is set into a blow washing tray, and is moved up and down by the emission of the clean compressible fluid.

    摘要翻译: 为了提高除尘性能,并且通过使用清洁的可压缩流体进行吹除除尘和电荷消除来防止灰尘清洁器中的灰尘的再附着,以除去附着在诸如钟表部件的物体的表面的灰尘,以及 电动静电除电器。 清洁的可压缩流体从清洁的可压缩流体喷嘴排出到物体。 当物体是静电充电物品时,将静电离子混合物清洁的可压缩流体包含从静电离子消除器产生的静电离子排放到物体上。 可以采用将物体设置在吹洗盘中并通过排出清洁的可压缩流体而上下移动的结构。

    Magnetic recording medium
    2.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4886703A

    公开(公告)日:1989-12-12

    申请号:US183105

    申请日:1988-04-19

    摘要: A magnetic recording medium comprising a support having provided on one surface thereof a magnetic layer comprising a binder and ferromagnetic particles dispersed therein, and on the opposite surface thereof a backing layer comprising a binder and non-magnetic particles dispersed therein, wherein at least one of the binders comprises a vinyl chloride copolymer resin having a vinyl chloride unit content of about 70 wt % or more based on the total amount of the binder, a nitrogen content of about from 0.01 to 1 wt % based on the total amount of the binder, and a polymerization degree of about from 250 to 700; and the non-magnetic particles comprises fine carbon particles having a DBP oil absorption of about 150 ml/100 g or more.

    摘要翻译: 一种磁记录介质,包括在其一个表面上设置有包含粘合剂和分散在其中的铁磁性颗粒的磁性层的支撑体,并且在其相对表面上具有包含粘合剂和分散在其中的非磁性颗粒的背衬层,其中至少一个 粘合剂包含基于粘合剂总量为约70重量%以上的氯乙烯单元含量的氯乙烯共聚物树脂,相对于粘合剂的总量,氮含量为约0.01〜1重量% 聚合度约为250〜700; 非磁性粒子包含DBP吸油量为150ml / 100g以上的细小碳粒子。

    Process for producing membranes for use in gas separation
    3.
    发明授权
    Process for producing membranes for use in gas separation 失效
    用于生产用于气体分离的膜的方法

    公开(公告)号:US4919856A

    公开(公告)日:1990-04-24

    申请号:US159301

    申请日:1988-02-23

    摘要: Method for producing a gas separation membrane comprising a microporous support having provided thereon a non-porous coating layer. The method comprises melt extruding a thermoplastic crystalline polymer under particular melt-extrusion conditions to form a precursor in the form of a hollow fiber or flat film, coating the precursor as a support with a coating substance composed of a natural or synthetic substance capable of forming a polymeric layer which does not form pinholes upon subsequent drawing after solidification to form a coating layer on the surface of the support, and solidifying the coating layer. The support is annealed either before or after the cooling process, and this is followed by cold drawing and heat setting the support to form the gas separation membrane.

    摘要翻译: 一种气体分离膜的制造方法,包括在其上设置有无孔涂层的微孔载体。 该方法包括在特定熔融挤出条件下熔融挤出热塑性结晶聚合物以形成中空纤维或平膜形式的前体,将前体作为载体涂覆,所述涂层物质由能够形成的天然或合成物质组成 聚合物层,其在固化之后的随后拉伸时不形成针孔,以在载体的表面上形成涂层,并固化涂层。 在冷却过程之前或之后对载体进行退火,然后冷拉和热固定载体以形成气体分离膜。

    Magnetic recording medium
    5.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US5008147A

    公开(公告)日:1991-04-16

    申请号:US216566

    申请日:1988-07-08

    IPC分类号: C09D5/23 G11B5/73 G11B5/735

    摘要: A magnetic recording medium comprising a nonmagnetic support having on one surface thereof a magnetic layer and on the opposite surface thereof a backing layer comprising nonmagnetic particles dispersed in a binder, wherein said binder of said backing layer comprises from about 20 to 90 wt % of polycarbonate polyurethane, and said backing layer comprises from about 40 to 200 parts by weight of said binder per 100 parts by weight of said nonmagnetic particles.

    摘要翻译: 一种磁记录介质,其包括在其一个表面上具有磁性层的非磁性载体,并且在其相对表面上具有包含分散在粘合剂中的非磁性颗粒的背衬层,其中所述背衬层的所述粘合剂包含约20至90重量%的聚碳酸酯 聚氨酯和所述背衬层每100重量份所述非磁性颗粒包含约40至200重量份的所述粘合剂。