Polyamide resin pellet for a miniature part
    1.
    发明授权
    Polyamide resin pellet for a miniature part 有权
    聚酰胺树脂颗粒为微型部件

    公开(公告)号:US06656589B2

    公开(公告)日:2003-12-02

    申请号:US10020918

    申请日:2001-12-19

    IPC分类号: B32B516

    摘要: A polyamide resin pellet for a miniature part, comprising a polyamide resin (A) whose melting point as measured by DSC is in the range of 280 to below 330° C., which has an average volume of 0.001 to 21 mm3, the average volume determined by randomly sampling 50 pellets, measuring the weight and specific gravity of each of the pellets and dividing the weight by the specific gravity. The polyamide resin pellet exhibits low water absorption and is excellent in moldability, mechanical strength characteristics and heat resistance. Further, it has specified average volume, configuration, average diameter and average length, so that, in an injection molding, plasticization is smoothly effected to thereby enable obtaining a molded item or article which exhibits low dispersion of weight and strength and has excellent hue. The polyamide resin pellet is especially suitable for use in a molding material for forming miniature parts for motor vehicles and electrical or electronic equipments.

    摘要翻译: 用于微型部件的聚酰胺树脂颗粒,其包含通过DSC测量的熔点在280至330℃的范围内的平均体积为0.001至21mm 3的聚酰胺树脂(A) 通过随机抽取50粒料确定平均体积,测量每个颗粒的重量和比重,并将重量除以比重。 聚酰胺树脂颗粒的吸水性低,成型性,机械强度特性和耐热性优异。 此外,其具有平均体积,构型,平均直径和平均长度,从而在注射成型中平滑地实现增塑,从而能够获得显示出低重量和强度分散性和色调优异的模制品或制品。 聚酰胺树脂颗粒特别适合于用于形成用于机动车辆和电气或电子设备的微型部件的成型材料。

    Semiaromatic polyamide resin composition
    2.
    发明授权
    Semiaromatic polyamide resin composition 失效
    半芳族聚酰胺树脂组合物

    公开(公告)号:US06319986B1

    公开(公告)日:2001-11-20

    申请号:US09345408

    申请日:1999-07-01

    IPC分类号: C08L7700

    摘要: A semiaromatic polyamide resin composition comprising: (A) a polyamide copolymer in which a main constituent component unit is a polyamide formed of a recurring unit of a dicarboxylic acid component unit and a diamine component unit, at least not less than 45 mol % of said dicarboxylic acid component unit being a terephthalic acid component unit, and said diamine component unit comprising a straight-chain alkylenediamine component unit and/or an alkylenediamine component unit having a side-chain alkyl group; (B) an aliphatic polyamide containing, a unit derived from a lactam having 12 carbon atoms, a unit derived from an aminocarboxylic acid having 12 carbon atoms or a unit derived from a dodecanoic diacid and a diamine; and (C) a graft-modified product of a graft-modified ethylene/&agr;-olefin copolymer, a graft-modified product of an aromatic vinyl compound/conjugated diene copolymer, or a graft-modified product of a hydrogenated product of the aromatic vinyl compound/conjugated diene copolymer. The resin composition little precipitates the oligomer during the molding, little causes the vent of the metal mold to be clogged, is suited for conducting the molding operation for extended periods of time, and further exhibits excellent resistance against aging by heat, anti-creeping property, shock resistance and ejectability.

    摘要翻译: 一种半芳族聚酰胺树脂组合物,其包含:(A)主要构成成分单元是由二羧酸成分单元的重复单元形成的聚酰胺和二胺成分单元的聚酰胺共聚物,所述聚酰胺共聚物的摩尔比例至少为所述 二羧酸成分单元为对苯二甲酸成分单元,所述二胺成分单元包含直链亚烷基二胺成分单元和/或具有侧链烷基的亚烷基二胺成分单元;(B)含有单体衍生物 来自具有12个碳原子的内酰胺,衍生自具有12个碳原子的氨基羧酸的单元或衍生自十二烷二酸的单元和二胺; 和(C)接枝改性的乙烯/α-烯烃共聚物的接枝改性产物,芳族乙烯基化合物/共轭二烯共聚物的接枝改性产物或芳族乙烯基共聚物的氢化产物的接枝改性产物 化合物/共轭二烯共聚物。 树脂组合物在模塑过程中几乎不使低聚物沉淀,很少导致金属模具的排气堵塞,适合长时间进行模塑操作,并且进一步表现出优异的耐热老化性,抗蠕变性 ,抗冲击性和弹性。

    X-Ray film-holding device with convex cushion members
    4.
    发明授权
    X-Ray film-holding device with convex cushion members 失效
    具有凸起缓冲构件的X射线胶片保持装置

    公开(公告)号:US4538294A

    公开(公告)日:1985-08-27

    申请号:US578884

    申请日:1984-02-10

    IPC分类号: G03C3/00 G03B42/04 G03B11/00

    CPC分类号: G03B42/04

    摘要: Swingable front and back plates are supported by a hinge. Cushion members are pasted individually on the inner surfaces of the front and back plates. The cushion members individually have two-dimensional curved surfaces with the same radius of curvature, and are arranged so that the directions of curvature of their curved surfaces cross substantially at right angles. Intensifying screens curved to match the surfaces of the cushion members are pasted thereon. An X-ray film is sandwiched between the intensifying screens, and the front and back plates are joined together. Thereupon, the region of each cushion member, pressing the X-ray film through its corresponding intensifying screens, extends gradually, moving its center from the hinge side to the free-end side. When the front and back plates are joined together, the X-ray film receives a maximum pressing force from the center of each cushion member. The pressing force decreases with radial distance from the center.

    摘要翻译: 可摆动的前后板由铰链支撑。 缓冲构件分别贴在前板和后板的内表面上。 缓冲构件分别具有相同曲率半径的二维曲面,并且被布置为使得它们的曲面的曲率方向基本上以直角交叉。 弯曲以与衬垫构件的表面相匹配的增强屏幕被粘贴在其上。 将X射线胶片夹在强化屏幕之间,将前后板接合在一起。 因此,每个缓冲构件的区域,通过其相应的增强屏幕挤压X射线胶片,逐渐延伸,将其中心从铰链侧移动到自由端。 当前板和后板接合在一起时,X射线胶片从每个缓冲部件的中心受到最大的压力。 按压力随着与中心的径向距离而减小。

    Semiaromatic polyamide resin composition
    5.
    发明授权
    Semiaromatic polyamide resin composition 失效
    半芳族聚酰胺树脂组合物

    公开(公告)号:US6117942A

    公开(公告)日:2000-09-12

    申请号:US038982

    申请日:1998-03-12

    IPC分类号: C08L77/00 C08L77/06 C08G63/48

    CPC分类号: C08L77/00 C08L77/06

    摘要: A semiaromatic polyamide resin composition of the present invention contains a polyamide (A) in which a dicarboxylic acid component unit comprises a terephthalic acid component unit and a diamine component unit comprises a straight-chain alkylenediamine component unit and an alkylenediamine component unit having a side-chain alkyl group; and a modified ethylene/.alpha.-olefin copolymer (B) obtained by graft-modifying an ethylene/.alpha.-olefin copolymer having particular properties with an unsaturated carboxylic acid or a derivative thereof. A molded article obtained by using this composition exhibits excellent anti-creeping property under high-temperature and high-humidity conditions, and causes the metal mold to be little fouled during the molding operation.

    摘要翻译: 本发明的半芳族聚酰胺树脂组合物包含其中二羧酸组分单元包括对苯二甲酸组分单元和二胺组分单元包含直链亚烷基二胺组分单元和亚烷基二胺组分单元的聚酰胺(A) 链烷基; 和通过用不饱和羧酸或其衍生物接枝改性具有特定性能的乙烯/α-烯烃共聚物而得到的改性乙烯/α-烯烃共聚物(B)。 通过使用该组合物得到的成型体在高温高湿条件下表现出优异的抗蠕变性,并且在成型操作中导致金属模不易弄脏。

    X-ray film holding apparatus providing tight contact between film and
intensifying screen
    6.
    发明授权
    X-ray film holding apparatus providing tight contact between film and intensifying screen 失效
    X射线胶片保持装置提供胶片和增强屏幕之间的紧密接触

    公开(公告)号:US4782505A

    公开(公告)日:1988-11-01

    申请号:US935520

    申请日:1986-11-26

    申请人: Yoshimasa Ogo

    发明人: Yoshimasa Ogo

    IPC分类号: G03B42/04

    CPC分类号: G03B42/04

    摘要: An X-ray film holding apparatus includes front and rear plates through which X-rays transmit. The front and rear plates respectively have opposite surfaces. The front plate is flexible, and the opposite surface of the front plate has a partial spherical portion extending toward the rear plate. The spherical surface is curved along a first direction and a second direction perpendicular to the first direction. The front plate is rectangular, and its three sides are supported by a holding frame. An elastic cushion member is adhered to the opposite surface of the rear plate. The cushion member has a surface opposite to the front plate. The opposite surface of the cushion member has a partial cylindrical surface extending toward the front plate. The cylindrical surface is curved along the first direction and parallel to the second direction. Intensifying screen sheets are respectively adhered to the opposite surfaces of the front plate and the cushion member. The holding frame and the rear plate come close to or are separated from each other. An X-ray film can be tightly held between the front plate and the cushion member.

    摘要翻译: X射线胶片保持装置包括X射线透过的前板和后板。 前板和后板分别具有相对的表面。 前板是柔性的,前板的相对表面具有向后板延伸的部分球形部分。 球形表面沿着第一方向和垂直于第一方向的第二方向弯曲。 前板为矩形,三面由支架支撑。 弹性缓冲构件粘附到后板的相对表面。 缓冲构件具有与前板相对的表面。 缓冲构件的相对表面具有向前板延伸的部分圆柱形表面。 圆柱形表面沿着第一方向弯曲并平行于第二方向。 强化丝网片分别粘附在前板和缓冲件的相对表面上。 保持框架和后板彼此接近或分离。 X射线胶片可以紧紧地保持在前板和缓冲件之间。

    X-ray film holder
    7.
    发明授权
    X-ray film holder 失效
    X光片夹

    公开(公告)号:US4658415A

    公开(公告)日:1987-04-14

    申请号:US713854

    申请日:1985-03-20

    申请人: Yoshimasa Ogo

    发明人: Yoshimasa Ogo

    IPC分类号: G03C1/00 G03B42/04 G03B41/16

    CPC分类号: G03B42/04

    摘要: An X-ray film holder for holding an X-ray film includes at least one pair of support and intensifying plates each defining mutually opposed inner surfaces. A cushion member is adhesively sandwiched between the opposed inner surfaces of the support plate and intensifying screen. To facilitate removal and/or replacement of the intensifying screen, the cushion member includes protective layers interposed between the cushioned member on the one hand and the support plate and intensifying screen on the other hand. The protective layers thus serve to protect the cushioned member from damage by the adhesive bond while yet permitting bonding release of the cushioned member from the support plate and/or intensifying screen to facilitate removal thereof.

    摘要翻译: 用于保持X射线胶片的X射线胶片保持器包括至少一对限定相互相对的内表面的支撑和增强板。 缓冲构件粘合地夹在支撑板的相对的内表面和增强屏之间。 为了便于移除和/或更换增强屏幕,缓冲构件包括一方面夹在缓冲构件之间的保护层,另一方面包括支撑板和增强屏幕。 因此,保护​​层用于保护缓冲构件免受粘合剂粘合的损伤,同时允许缓冲构件从支撑板和/或增强屏蔽件的粘合释放以便于移除。

    X-Ray field defining mask
    8.
    发明授权
    X-Ray field defining mask 失效
    X射线场定义掩模

    公开(公告)号:US4476569A

    公开(公告)日:1984-10-09

    申请号:US440618

    申请日:1982-11-10

    申请人: Yoshimasa Ogo

    发明人: Yoshimasa Ogo

    CPC分类号: G03B42/02 G03B42/025

    摘要: In a spot film device, a cassette assembly for a film cassette is mounted for reciprocating in a tunnel between an X-ray exposure position and a position in which the cassette is automatically unloaded or loaded with film. Field defining masks are also mounted for translating selectively with the carriage. The masks are formed of the synthetic materials having minimal X-ray absorption and high rigidity, without an aperture, to define a sharp X-ray field.

    摘要翻译: 在点胶装置中,安装用于胶片暗盒的盒组件,用于在X射线曝光位置和盒自动卸载或装载胶片的位置之间的隧道中往复运动。 场定义掩模也被安装成与滑架有选择地平移。 掩模由具有最小X射线吸收和高刚性的合成材料形成,没有孔径以限定尖锐的X射线场。