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    • 17. 发明授权
    • Polymerization catalysts
    • 聚合催化剂
    • US06509288B1
    • 2003-01-21
    • US09443896
    • 1999-11-19
    • Birgit Angelika DorerChristopher SharpRichard Henry Weatherhead
    • Birgit Angelika DorerChristopher SharpRichard Henry Weatherhead
    • B01J320
    • C08F10/00C08F4/65912C08F110/06C08F210/06Y10S526/943C08F4/65925C08F2500/02C08F2500/03C08F210/14
    • Catalyst system suitable for preparing substantially terminally unsaturated atactic polymers or copolymers of &agr;-olefins having a molecular weight (Mn) in the range 200-500,000. The catalyst system includes a metallocene of the formula: [RmCpH(5-m)][RnCpH(5-n)]M(Z)Y wherein CpH is a cyclopentadienyl ligand, each R represents an alkyl or an aryl substituent on the CpH ligand or two R's may be joined together to form a ring, or the Rs in each CpH group when taken together represents an Si or C bridging group linking two CpH groups wherein the Si or C group may itself be substituted by hydrogen atoms or C1-C3 alkyl groups, M is a metal selected from hafnium, zirconium and titanium, Z is selected from a hydrogen atom, a trifluoromethane sulphonate, an alkyl and an aryl group, Y is selected from a, 1,3-diketonate and a &bgr;-ketoester arion, and each of m and n is same or different and has a value from 0 to 5.
    • 适用于制备基本上末端不饱和的无规立构聚合物或分子量(Mn)范围为200-500,000的α-烯烃的共聚物的催化剂体系。 催化剂体系包括下式的茂金属:其中CpH是环戊二烯基配体,每个R代表CpH配体上的烷基或芳基取代基,或者两个R可以连接在一起形成环,或每个CpH基中的Rs 一起代表连接两个CpH基团的Si或C桥连基团,其中Si或C基团本身可以被氢原子或C 1 -C 3烷基取代,M是选自铪,锆和钛的金属,Z选自 氢原子,三氟甲磺酸盐,烷基和芳基,Y选自1,3-二酮酸酯和β-酮酯酰亚胺,m和n各自相同或不同,并且具有0至5的数值 。
    • 19. 发明授权
    • Tray assembly for a print production resource
    • 用于打印生产资源的纸盘组件
    • US08083224B2
    • 2011-12-27
    • US12428012
    • 2009-04-22
    • Richard Thomas Calhoun BridgesChristopher Sharp
    • Richard Thomas Calhoun BridgesChristopher Sharp
    • B65H1/00
    • B65H1/266B65H2511/10B65H2511/20B65H2220/01B65H2220/04
    • A tray assembly for a print production resource may include a tray and a guide assembly. The guide assembly may include a first width guide configured to contact a first side of a media stack at a first location below a top sheet of the media stack such that a first distance exists between the top sheet and the first width guide. The guide assembly may include a second width guide configured to contact a second side of the media stack at a second location below the top sheet of the media stack such that a second distance exists between the top sheet of the media stack and the second width guide. The first side may be opposite the second side, and the tray assembly may be configured to be utilized with a top sheet feeder mechanism.
    • 用于打印生产资源的托盘组件可以包括托盘和引导组件。 引导组件可以包括第一宽度引导件,其构造成在介质堆叠的顶片下方的第一位置处接触介质堆叠的第一侧,使得顶片和第一宽度引导件之间存在第一距离。 引导组件可以包括第二宽度引导件,其构造成在介质堆叠的顶部片材下方的第二位置处接触介质堆叠的第二侧,使得在介质堆叠的顶部片材和第二宽度引导件之间存在第二距离 。 第一侧可以与第二侧相对,并且托盘组件可以被构造成与顶部送纸机构一起使用。