Transparent thermal recording medium

    公开(公告)号:US5741752A

    公开(公告)日:1998-04-21

    申请号:US479354

    申请日:1995-06-07

    摘要: This invention provides a transparent thermal recording medium, in which the transparent thermal recording medium comprises: a thermal recording layer, which is provided on a transparent layer, consisting essentially of an electron-donating chromophoric compound, an electron-accepting compound and binder resin; and a further-provided protective layer having an approximately equal refractive index to the refractive index of the thermal recording layer, wherein the binder resin is a compound having a group selected from a hydroxyl group and a carboxyl group. The transparent thermal recording medium can be effectively used for a block copy film, on which an image is formed, for plate-making, particularly, in photogravure, offset printing and screen process printing, because the transparent thermal recording medium has a contrast of light transmission factors between a color-imaging portion and a non-imaging portion, in which the contrast is not less than 50% at a wavelength ranging from 370 nm to 450 nm.

    Ozone filter used in electrophotographic apparatus including catalyst of
CuO, MnO.sub.2, and a water-soluble polymer
    63.
    发明授权
    Ozone filter used in electrophotographic apparatus including catalyst of CuO, MnO.sub.2, and a water-soluble polymer 失效
    用于电子照相设备中的臭氧过滤器,包括CuO,MnO 2和水溶性聚合物的催化剂

    公开(公告)号:US5371577A

    公开(公告)日:1994-12-06

    申请号:US8827

    申请日:1993-01-25

    CPC分类号: G03G21/206

    摘要: An electrophotographic apapratus of the type in which a photosensitive member is charged by atmospheric discharge, is equipped with an air filter including a substrate and a catalyst layer formed on the substrate including at least three components of CuO, MnO.sub.2 and a water-soluble polymer. The catalyst layer shows a reactivity with NOx and the water-soluble polymer traps the resultant HNO.sub.3 while retaining a high ozone removing efficiency, whereby the apparatus can show excellent electrophotographic performances even after successive use while preventing deterioration due to ozone, NOx and HNO.sub.3 produced by the atmospheric discharge.

    摘要翻译: 其中通过大气排放而对感光构件进行充电的电子照相放大镜装备有包括基底和在基底上形成的包含至少三种CuO,MnO 2和水溶性聚合物组分的催化剂层的空气过滤器。 催化剂层显示与NOx的反应性,并且水溶性聚合物捕获所得的HNO 3,同时保持高的臭氧去除效率,由此即使在连续使用之后,该装置也能显示出优异的电子照相性能,同时防止臭氧,NOx和HNO3产生的劣化 大气排放。

    Vinyl chloride resin-based composition and packings made therefrom
    64.
    发明授权
    Vinyl chloride resin-based composition and packings made therefrom 失效
    基于氯乙烯树脂的组合物和由其制成的填料

    公开(公告)号:US5360871A

    公开(公告)日:1994-11-01

    申请号:US14000

    申请日:1993-02-05

    摘要: An improved vinyl chloride resin-based composite material is provided by melt-mixing a vinyl chloride resin with a polymeric polyol of 300-10,000 MW and a polyisocyanate having at least three isocyanate group under shearing force while allowing said polyol and polyisocyanate to react. The composite material has a content of tetrahydrofuran-insolubles of about 5-55% by weight. The composite material exhibits chemical and physical properties suitable for use in packing and sealing applications.

    摘要翻译: 通过将氯乙烯树脂与300-10,000MW的聚合多元醇和剪切力下具有至少三个异氰酸酯基团的多异氰酸酯熔融混合,同时允许所述多元醇和多异氰酸酯反应来提供改进的氯乙烯树脂基复合材料。 复合材料具有约5-55重量%的四氢呋喃不溶物的含量。 复合材料具有适用于包装和密封应用的化学和物理性能。

    Process for synthesis of N,N-disubstituted hydrazone
    67.
    发明授权
    Process for synthesis of N,N-disubstituted hydrazone 失效
    合成N,N-二取代腙的方法

    公开(公告)号:US4990625A

    公开(公告)日:1991-02-05

    申请号:US445930

    申请日:1989-12-05

    摘要: A process for synthesizing an N,N-disubstituted hydrazone comprises carrying out nitrozation by adding an aqueous solution of sodium nitrite to a solution having one part by weight of an N,N-disubstituted amine dissolved in 3 to 30 parts by weight of an organic acid, then reducing the nitrozated product to an N,N-disubstituted hydrazine by adding a reducing agent to the mixture containing the nitrozated product, and thereafter adding to the mixture containing the N,N-disubstituted hydrazine a carbonyl compound of the formula: ##STR1## wherein A represents an aromatic hydrocarbon group or an aromatic heterocyclic group which may have a substituent, B represents a hydrogen atom, an alkyl group, an aryl group or an aromatic heterocyclic group, which may have a substituent, thereby performing condensation of the N,N-disubstituted hydrazine with the carbonyl compound.

    摘要翻译: 合成N,N-二取代腙的方法包括通过将亚硝酸钠水溶液加入到溶解有3重量份的N,N-二取代胺的溶液中进行硝化,所述N,N-二取代胺溶解在3-30重量份的有机 然后通过向含有硝基化产物的混合物中加入还原剂将硝化产物还原成N,N-二取代的肼,然后向含有N,N-二取代肼的混合物中加入下式的羰基化合物: 其中A表示可以具有取代基的芳香族烃基或芳香族杂环基,B表示可以具有取代基的氢原子,烷基,芳基或芳香族杂环基,由此进行 N,N-二取代肼与羰基化合物。