USE OF A METALLOCENE CATALYST TO PRODUCE A POLYALPHA-OLEFIN
    1.
    发明申请
    USE OF A METALLOCENE CATALYST TO PRODUCE A POLYALPHA-OLEFIN 有权
    使用金属催化剂生产聚氨酯烯烃

    公开(公告)号:US20150344598A1

    公开(公告)日:2015-12-03

    申请号:US14725540

    申请日:2015-05-29

    IPC分类号: C08F110/14

    摘要: A process may include contacting an olefin monomer and a racemic bridged metallocene catalyst at a temperature of 80° C. to 150° C. in the presence of hydrogen. The racemic bridged metallocene catalyst may include a metallocene compound (A) and an activator component (B). The process may include recovering an effluent containing polyalpha-olefins (PAOs). The metallocene compound (A) may be represented by the formula R(Cp1)(Cp2)MX1X2. In the formula, R may be a C1-C20 alkylene bridging group; Cp1 and Cp2 may be the same or different substituted or unsubstituted tetrahydroindenyl rings; M may be a transition metal; and X1 and X2 may be independently selected from hydrogen, halogen, hydride radicals, hydrocarbyl radicals, substituted hydrocarbyl radicals, halocarbyl radicals, substituted halocarbyl radicals, silylcarbyl radicals, substituted silylcarbyl radicals, germlcarbyl radicals, substituted germylcarbyl radicals.

    摘要翻译: 一种方法可以包括在氢气存在下,在80℃至150℃的温度下使烯烃单体和外消旋桥连茂金属催化剂接触。 外消旋桥连茂金属催化剂可以包括茂金属化合物(A)和活化剂组分(B)。 该方法可以包括回收含有聚α-烯烃(PAO)的流出物。 金属茂化合物(A)可由式R(Cp1)(Cp2)MX1X2表示。 在该式中,R可以是C 1 -C 20亚烷基桥连基; Cp1和Cp2可以是相同或不同的取代或未取代的四氢茚基环; M可能是过渡金属; X 1和X 2可以独立地选自氢,卤素,氢原子,烃基,取代的烃基,卤代烃基,取代的卤代烃基,甲硅烷基,取代的甲硅烷基,烯基,取代的甲硅烷基。

    Modified Catalyst Supports
    2.
    发明申请
    Modified Catalyst Supports 审中-公开
    改性催化剂支持

    公开(公告)号:US20150315304A1

    公开(公告)日:2015-11-05

    申请号:US14708748

    申请日:2015-05-11

    IPC分类号: C08F10/14 C08F10/06

    摘要: supported catalyst system may include a titanated silica-containing catalyst support having at least 0.1 wt % of Ti and a specific surface area of from 150 m2/g to 800 m2/g. The Ti may be of a titanium compound of the general formula selected from RnTi(OR′)m, and (RO)nTi(OR′)m, wherein R and R′ are the same or different and are selected from hydrocarbyl groups containing from 1 to 12 carbons or halogens, wherein n is 0 to 4, wherein m is 0 to 4, and wherein m+n equals 4. The supported catalyst system may include a catalyst activating agent and a metallocene. The supported catalyst system may be obtained by a process including titanating a silica-containing catalyst support with at least one vapourised titanium compound, and treating the titanated silica-containing catalyst support with a catalyst activating agent and a metallocene.

    摘要翻译: 负载的催化剂体系可以包括具有至少0.1重量%Ti和比表面积为150m 2 / g至800m 2 / g的钛酸二氧化硅催化剂载体。 Ti可以是选自RnTi(OR')m和(RO)n Ti(OR')m的通式的钛化合物,其中R和R'相同或不同,并且选自含有 1至12个碳或卤素,其中n为0至4,其中m为0至4,并且其中m + n等于4.负载的催化剂体系可包括催化剂活化剂和茂金属。 负载催化剂体系可以通过包括用至少一种蒸发的钛化合物对含二氧化硅的催化剂载体进行钛化并用催化剂活化剂和茂金属处理该含钛催化剂载体的方法获得。

    Process for preparing a polyethylene in at least one continuously stirred tank reactor

    公开(公告)号:US10100135B2

    公开(公告)日:2018-10-16

    申请号:US15318010

    申请日:2015-06-11

    摘要: Processes for preparing a polyethylene in at least one continuously stirred tank reactor are described herein. The process may comprise the step of: polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene, wherein the supported metallocene catalyst comprises a solid support, a co-catalyst and at least one metallocene, wherein the solid support has a surface area within the range of from 100 to 500 m2/g, and has a D50 value within the range of from 4 μm to 18 μm, with D50 being defined as the particle size for which fifty percent by weight of the particles has a size lower than the D50; and D50 being measured by laser diffraction analysis on a Malvern type analyzer. Polyethylene obtained by the disclosed process and articles comprising the polyethylene are also described.

    Isocyantate-free Method for Preparing Poly(carbonate-urethane) or Poly(ester-urethane)
    6.
    发明申请
    Isocyantate-free Method for Preparing Poly(carbonate-urethane) or Poly(ester-urethane) 审中-公开
    不含异氰酸酯的聚(碳酸酯 - 氨基甲酸酯)或聚(酯 - 氨基甲酸酯)

    公开(公告)号:US20150267001A1

    公开(公告)日:2015-09-24

    申请号:US14729499

    申请日:2015-06-03

    IPC分类号: C08G71/04 C08G64/30 C08G64/02

    摘要: Poly(carbonate-urethane) or poly(ester-urethane) may be characterised in that of carbonate soft segments have molecular weights Mn ranging between 10,000 and 250,000 g/mol. The segments' length may be monitored by the ring-opening polymerisation condition. The process of preparing the poly(carbonate-urethane) or poly(ester-urethane) may include immortal ring-opening polymerisation of a cyclic carbonate or of a cyclic ester or diester monomers in the presence of a first catalyst system and diols or polyols. The process may include chemical modification of the hydroxyl chain-end groups into carboxylic groups in the presence of a second catalyst system. The process may include a coupling reaction with at least 2 equivalents of a second cyclic carbonate, enabling coupling with the carboxylic moiety in the presence of a third catalyst system. The process may include polyaddition of a diamine or a of amine via ring-opening of the second cyclic carbonate, and obtention of poly(carbonate-urethane) or poly(ester-urethane).

    摘要翻译: 聚(碳酸酯 - 氨基甲酸酯)或聚(酯 - 氨基甲酸酯)的特征可以在于碳酸盐软链段的分子量Mn在10,000和250,000g / mol之间。 可以通过开环聚合条件监测段的长度。 制备聚(碳酸酯 - 氨基甲酸酯)或聚(酯 - 氨基甲酸酯)的方法可以包括在第一催化剂体系和二醇或多元醇的存在下环状碳酸酯或环状酯或二酯单体的永久开环聚合。 该方法可以包括在第二催化剂体系的存在下将羟基链端基化学修饰成羧基。 该方法可以包括与至少2当量的第二环状碳酸酯的偶联反应,使得能够在第三催化剂体系的存在下与羧基部分偶联。 该方法可以包括通过第二环状碳酸酯的开环加成二胺或胺,以及获得聚(碳酸酯 - 氨基甲酸酯)或聚(酯 - 氨基甲酸酯)。