Radiation-sensitive poly(amic acid) polymer composition
    1.
    发明授权
    Radiation-sensitive poly(amic acid) polymer composition 失效
    辐射敏感聚(酰胺酸)聚合物组合物

    公开(公告)号:US4451551A

    公开(公告)日:1984-05-29

    申请号:US331875

    申请日:1981-12-17

    摘要: A light- or radiation-sensitive polymer composition comprising (a) a poly(amic acid) having as a major component a repeating unit of the formula: ##STR1## (b) one or more light- or radiation-sensitive compounds having an amino group and an aromatic azide group or aromatic sulfonylazide group in one molecule, and if necessary (c) one or more photosensitizers and/or amine compounds having at least one unsaturated bonding, and/or (d) one or more compounds having at least two unsaturated bonding in one molecule, is highly sensitive to light and radiation and can give a precise relief pattern on a substrate. Further, a finally obtained polyimide film is excellent in heat resistance.

    摘要翻译: 一种光或辐射敏感性聚合物组合物,其包含(a)作为主要组分的具有下式的重复单元的聚(酰胺酸):(b)一种或多种具有氨基的光或辐射敏感性化合物 (c)一种或多种具有至少一个不饱和键的光敏剂和/或胺化合物,和/或(d)一种或多种具有至少两个不饱和键的化合物, 在一个分子中的不饱和键,对光和辐射具有高度敏感性,并且可以在基底上给出精确的浮雕图案。 此外,最终得到的聚酰亚胺膜的耐热性优异。

    Process for preparing stannic oxide hydrate
    6.
    发明授权
    Process for preparing stannic oxide hydrate 失效
    制备氧化锡水合物的方法

    公开(公告)号:US4041144A

    公开(公告)日:1977-08-09

    申请号:US575228

    申请日:1975-05-07

    CPC分类号: C01G19/02 C08K3/22

    摘要: A flame resisting agent to be incorporated into an aqueous spinning dope containing chlorine-containing polymer as a main polymer ingredient for improving the flame resistant property of the fiber spun from the spinning dope which includes a stannic oxide hydrate being substantially amorphous with respect to X-ray diffraction and having a bound water in the range of about 0.5 to about 0.7 mole of H.sub.2 O per 1 mole of SnO.sub.2. The flame resisting agent has a superior dispersibility in an aqueous spinning dope containing chlorine-containing polymer as a main polymer ingredient and the aqueous spinning dope in which the flame resisting agent is incorporated has a superior stability, filtering property and spinning property to give a uniform quality of fibers having a durable, superior flame resistant property.

    摘要翻译: 含有含氯聚合物作为主要聚合物成分的水性纺丝原液的阻燃剂,用于提高由纺丝原液纺丝的纤维的阻燃性,其包括相对于X射线的基本上无定形的氧化锡水合物, 并且每1摩尔SnO 2具有约0.5至约0.7摩尔H 2 O的结合水。 阻燃剂在含有含氯聚合物作为主要聚合物成分的水性纺丝原液中具有优异的分散性,并且其中引入阻燃剂的水性纺丝原液具有优异的稳定性,过滤性能和纺丝性能,使其均匀 纤维的质量具有耐用,优异的阻燃性能。

    Spider of loudspeaker
    7.
    发明授权
    Spider of loudspeaker 失效
    扬声器蜘蛛

    公开(公告)号:US4239944A

    公开(公告)日:1980-12-16

    申请号:US5247

    申请日:1979-01-22

    CPC分类号: H04R9/00 H04R7/16

    摘要: A spider of loudspeaker having a base material in the form of a plain-woven fabric of warps and wefts each of which constituted by fibers of an inorganic material. The warps and wefts are coated with a thermosetting resin which in turn is coated with a thermoplastic resin. The spider thus formed is less liable to absorb the ambient moisture and, therefore, is free from distortion.

    摘要翻译: 一种扬声器的蜘蛛,其具有由无机材料的纤维构成的经纱和纬纱的平纹织物形式的基材。 经纱和纬纱涂有热固性树脂,热固性树脂又用热塑性树脂涂覆。 这样形成的蜘蛛不易吸收周围的水分,因此没有变形。