Methods of Preparing a Catalyst
    3.
    发明申请

    公开(公告)号:US20180094087A1

    公开(公告)日:2018-04-05

    申请号:US15281538

    申请日:2016-09-30

    Abstract: A method of preparing a catalyst comprising a) contacting (i) a silica-support, (ii) an oxotitanium compound, (iii) a chromium-containing compound, and (iv) an optional solvent to form a first aqueous mixture comprising a pre-catalyst and a reaction media having from about 1 wt. % to about 99 wt. % water; b) thermally treating the pre-catalyst by heating to a temperature of from about 400° C. to about 1000° C. for a time period of from about 1 minute to about 24 hours to form the catalyst. A method of preparing a catalyst comprising contacting a hydrated support material comprising silica with a chromium-containing compound to form a first aqueous mixture comprising a chrominated support; contacting the first aqueous mixture comprising a chrominated support with a solution comprising (i) a solvent and (ii) an oxotitanium compound to form a second aqueous mixture comprising a pre-catalyst; and thermally treating the pre-catalyst to form the catalyst.

    Long Chain Branched Polymers and Methods of Making Same
    4.
    发明申请
    Long Chain Branched Polymers and Methods of Making Same 审中-公开
    长链支化聚合物及其制备方法

    公开(公告)号:US20170037158A1

    公开(公告)日:2017-02-09

    申请号:US15298540

    申请日:2016-10-20

    Abstract: A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 8 long chain branches per million carbon atoms, a polydispersity index of greater than about 20 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 1 long chain branches per chain, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.

    Abstract translation: 具有长链支化含量高于每百万个碳原子大于约20个长支链的聚合物,多分散指数大于约10,其中长链支化在分子量的较高分子量部分下降至约零 分配。 具有长链支化含量高于每百万个碳原子大于约8个长链分支的聚合物,多分散指数大于约20,其中长链支化在分子量分布的较高分子量部分下降至约零 。 具有长链支化含量在每链大于约1个长链分支峰值的聚合物,以及大于约10的多分散指数,其中在分子量分布的较高分子量部分,长链支链降至约为零。

    Polymerization Catalysts and Polymers
    6.
    发明申请
    Polymerization Catalysts and Polymers 有权
    聚合催化剂和聚合物

    公开(公告)号:US20140275457A1

    公开(公告)日:2014-09-18

    申请号:US13799516

    申请日:2013-03-13

    Abstract: A method comprising contacting a support material with a transition metal compound to produce a mixture; thermally treating the mixture in the presence of oxygen at a temperature in a range of from about 100° C. to about 500° C. for a period of from about 1 hour to about 10 hours, wherein at least a portion of the transition metal sublimes onto the support material to produce a support material comprising a dispersed transition metal; and thermally treating the support material comprising the dispersed transition metal in an oxidizing atmosphere at a temperature in a range of from about 550° C. to about 900° C. for a period of from about 1 hour to about 10 hours to produce a polymerization catalyst.

    Abstract translation: 一种方法,包括使支撑材料与过渡金属化合物接触以产生混合物; 在氧气存在下,在约100℃至约500℃的温度范围内热处理混合物约1小时至约10小时,其中至少一部分过渡金属 升华到支撑材料上以产生包含分散的过渡金属的支撑材料; 并在包含分散的过渡金属的载体材料的氧化气氛中,在约550℃至约900℃的温度范围内热处理约1小时至约10小时,以产生聚合 催化剂。

Patent Agency Ranking