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    • 1. 发明授权
    • Hydrogenation of phenol
    • 酚的氢化
    • US3965187A
    • 1976-06-22
    • US52129
    • 1970-07-02
    • Edwin D. LittleZafarullah K. Cheema
    • Edwin D. LittleZafarullah K. Cheema
    • C07C45/00
    • C07C45/006
    • The catalytic hydrogenation of phenol obtained by the cumene hydroperoxide process is improved by hydrogenating high purity phenol containing not more than 75 ppm of acetol, an impurity found in phenol prepared from cumene. Acetol-free phenol is obtained by treating phenol for 1-5 minutes with a polyamine such as hexamethylene diamine, hexamethylene triamine and the like or an aqueous solution thereof, and then distilling the mixture to separate the components. Alternatively, the hydrogenability of phenol can be improved by injecting the polyamine into the reaction mixture during hydrogenation.
    • 通过氢化含有不超过75ppm的丙酮醇的高纯度苯酚(在异丙苯制备的酚中发现的杂质),可以改善通过氢过氧化枯烯过程获得的苯酚的催化氢化。 通过用多胺如六亚甲基二胺,六亚甲基三胺等或其水溶液处理苯酚1-5分钟得到无油无苯酚,然后蒸馏该混合物以分离组分。 或者,可以通过在氢化期间将多胺注入到反应混合物中来改善苯酚的可氢化性。
    • 2. 发明授权
    • Surlay proofing method
    • Surlay打样方法
    • US4304836A
    • 1981-12-08
    • US803355
    • 1977-06-03
    • Zafarullah K. CheemaOliver A. Barton
    • Zafarullah K. CheemaOliver A. Barton
    • G03F3/10G03F7/34G03C11/12
    • G03F7/34G03F3/106
    • A process for making a multicolored reproduction combining overlay and surprint characteristics in which a photohardenable layer, such as a photopolymerizable layer, is cast on a semi-rigid, transparent, support film, the photohardenable layer is exposed in an appropriate exposure unit through a color negative representing one color, the exposed layer is developed to remove the unexposed areas and leave the exposed image areas, an adhesive layer, such as an acrylic adhesive, is coated on a release sheet, the coated release sheet is contacted with a receptor sheet at a temperature and pressure sufficient to transfer the adhesive to the sheet, the developed layer is contacted with the adhesive coated sheet at a temperature and pressure sufficient to transfer the image areas to the sheet and the steps of casting a photohardenable layer, exposing the layer, developing the layer and contacting the image areas with the sheet is repeated for each additional color desired.
    • 一种用于制作多色复制的方法,其结合覆盖和印刷特性,其中可光硬化层如可光聚合层被浇铸在半刚性,透明的支撑膜上,可光硬化层通过颜色曝光在适当的曝光单元中 阴性表示一种颜色,曝光层被显影以除去未曝光的区域并留下曝光的图像区域,诸如丙烯酸粘合剂的粘合剂层涂覆在剥离片上,涂覆的剥离片与受体片接触 足以将粘合剂转移到片材的温度和压力,显影层在粘合剂涂覆的片材上以足以将图像区域转印到片材的温度和压力下接触,并且铸造可光硬化层,暴露该层, 针对所需的每种附加颜色重复显影层并使图像区域与片材接触。