Image forming apparatus including an intermediate image transfer body
    72.
    发明授权
    Image forming apparatus including an intermediate image transfer body 失效
    图像形成装置,包括中间图像转印体

    公开(公告)号:US06219518B1

    公开(公告)日:2001-04-17

    申请号:US09431280

    申请日:1999-11-01

    IPC分类号: G03G1516

    CPC分类号: G03G15/1605 G03G2215/0174

    摘要: An image forming apparatus of the type sequentially transferring a plurality of toner images formed on an image carrier to an intermediate image transfer body one upon the other (primary transfer) and collectively transferring them from the intermediate image transfer body to a recording medium (secondary transfer) is disclosed. The intermediate image transfer body is implemented by a roller including a metallic core, a base layer formed on the core, and a surface layer formed on the base layer. The base layer and surface layer have a total resistance between 1.57×108 &OHgr; and 1.57×109 &OHgr; for a unit length (1/cm). The surface layer has a volume resistivity between 1×106 &OHgr; cm and 1×109 &OHgr; cm. The roller is free from defective image transfer ascribable to the varying environment.

    摘要翻译: 一种图像形成装置,其类型是将形成在图像载体上的多个调色剂图像顺序地转印到中间图像转印体上(一次转印),并将它们从中间图像转印体共同转印到记录介质(二次转印 )被公开。 中间图像转印体由包括金属芯,形成在芯上的基底层和形成在基底层上的表面层的辊构成。 基底层和表面层对于单位长度(1 / cm)的总电阻在1.57×10 8欧米茄和1.57×10 9欧米茄之间。 表面层的体积电阻率介于1×10 6欧姆·厘米至1×10 9欧姆·厘米。 滚筒没有因不同环境造成的图像转换不良。

    Process for producing acrylonitrile or methacrylonitrile from propane or
isobutane by ammoxidation
    73.
    发明授权
    Process for producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation 失效
    通过氨氧化从丙烷或异丁烷生产丙烯腈或甲基丙烯腈的方法

    公开(公告)号:US6080882A

    公开(公告)日:2000-06-27

    申请号:US115195

    申请日:1998-07-15

    CPC分类号: C07C253/24 B01J8/1827

    摘要: Process for producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation at a temperature in the range of from 380 to 500.degree. C. in a fluidized-bed reactor containing a catalyst composition preheated to a temperature of not lower than 300.degree. C. and lower than the ammoxidation reaction temperature, the catalyst composition comprising a carrier having supported thereon an oxide catalyst comprising a compound oxide of molybdenum, vanadium, niobium and at least one element selected from tellurium and antimony, wherein the ammoxidation of propane or isobutane is preceded by a specific temperature elevation operation in which the catalyst temperature in the reactor is elevated, while supplying into the fluidized-bed reactor a molecular oxygen-containing gas together with a combustible gas capable of combustion by reaction with the molecular oxygen in the presence of said catalyst composition, until the temperature of the catalyst composition reaches said ammoxidation reaction temperature. The process of the present invention is advantageous in that the temperature elevation of the catalyst can be performed without suffering a deterioration of the catalytic activity during the temperature elevation, thereby allowing the catalyst to fully exhibit its performance.

    摘要翻译: 在含有预热至不低于300℃的催化剂组合物的流化床反应器中,在380-500℃的温度下通过氨氧化反应由丙烷或异丁烷生产丙烯腈或甲基丙烯腈的方法, 所述催化剂组合物包含其上负载有包含钼,钒,铌和至少一种选自碲和锑的元素的复合氧化物的氧化物催化剂的载体,其中丙烷或异丁烷的氨氧化反应先于 在反应器中催化剂温度升高的特定升温操作,同时在所述催化剂组合物存在下向分解含氧气体和能够通过与分子氧反应而能够燃烧的可燃性气体供给到流化床反应器中 直到催化剂组合物的温度达到所述氨氧化物 反应温度。 本发明的方法的优点在于,可以在不升高升温期间催化活性降低的情况下进行催化剂的升温,从而使催化剂充分发挥其性能。

    Coating composition
    74.
    发明授权
    Coating composition 失效
    涂料组成

    公开(公告)号:US6051665A

    公开(公告)日:2000-04-18

    申请号:US81284

    申请日:1998-05-20

    摘要: A coating composition comprising (A) a fluorine-containing polymer, (B) a compound represented by the following general formula (1) or a partial condensation product thereof,SiR.sup.1.sub.n (OR.sup.2).sub.4-n (1)wherein R.sup.1 represents an alkyl group, an aryl group, an aralkyl group, a group containing --SH, or a group containing --NCO, each containing 1 to 10 carbon atoms, R.sup.2 represents a hydrogen atom, an alkyl group or acyl group having 1 to 10 carbon atoms, and n is an integer from 0 to 3, and (C) a chelate complex derived from a metal alkoxide. The coating composition can efficiently form a transparent cured coating exhibiting superior adhesion to various substrates, excellent scratch resistance, excellent weatherability, and having a low refractive index.

    摘要翻译: 一种涂料组合物,其包含(A)含氟聚合物,(B)由以下通式(1)表示的化合物或其部分缩合产物,SiR1n(OR2)4-n(1)其中R1表示烷基 ,芳基,芳烷基,含-SH的基团或含有1〜10个碳原子的-NCO的基团,R 2表示氢原子,碳原子数1〜10的烷基或酰基,以及 n为0〜3的整数,(C)来自金属醇盐的螯合络合物。 涂料组合物可以有效地形成对各种基材具有优异粘附性,优异的耐擦伤性,优异的耐候性和低折射率的透明固化涂料。