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    • 1. 发明授权
    • Gel-free process for making functionalized anionically polymerized polymers
    • 制备官能化阴离子聚合聚合物的无凝胶工艺
    • US06462143B1
    • 2002-10-08
    • US09234335
    • 1999-01-20
    • Carl Lesley WillisDaniel Earl GoodwinRobert Charles BeningDale Lee Handlin, Jr.John David Wilkey
    • Carl Lesley WillisDaniel Earl GoodwinRobert Charles BeningDale Lee Handlin, Jr.John David Wilkey
    • C08F842
    • C08F8/42
    • This invention relates to a gel-free process for making functionalized polymers. When multi-alkali metal initiators are used to make these polymers anionically, the process comprises anionically polymerizing at least one monomer with a multi-alkali metal initiator in a hydrocarbon solvent, capping the polymer by adding to the polymer a capping agent that reacts with the ends of the polymer chains such that strongly associating chain ends are formed wherein a strongly associating gel is formed, and, finally, adding a trialkyl aluminum compound to the gel. The important characteristic of the capping agent herein is that it will cap the living polymer and will add a functional group to the polymer chain end which will be strongly associating in the hydrocarbon solvent. In a second embodiment, the present invention relates to a process for making such polymers which comprises anionically polymerizing them as described and adding to the polymer a trialkyl aluminum compound before the alkali metal reacts with the capping agent-functionalized chain ends. Finally, the polymer is capped by adding the above-described capping agent. In the first embodiment, a gel is formed and then removed. In the second embodiment, the gel never is formed because of the presence of the trialkyl aluminum compound.
    • 本发明涉及无凝胶的制备官能化聚合物的方法。 当使用多碱金属引发剂阴离子制造这些聚合物时,该方法包括在烃溶剂中将至少一种单体与多碱金属引发剂进行阴离子聚合,通过向聚合物中加成封端剂,该封端剂与 聚合物链的末端,使得形成强缔合链末端,其中形成强缔合性凝胶,最后在凝胶中加入三烷基铝化合物。 本发明的封端剂的重要特征在于它将覆盖活性聚合物,并且将在烃溶剂中与聚合物链末端加成官能团,该聚合物链末端将强烈缔合。 在第二个实施方案中,本发明涉及一种制备这样的聚合物的方法,其包括如上所述对其进行阴离子聚合,并在碱金属与封端剂官能化的链末端反应之前向聚合物中加入三烷基铝化合物。 最后,通过加入上述封端剂封闭聚合物。 在第一实施方案中,形成凝胶然后除去。 在第二实施方案中,由于存在三烷基铝化合物,所以不会形成凝胶。
    • 2. 发明授权
    • Gel-free process for making hydrogenated functionalized anionically polymerized polymers
    • 制备氢化官能化阴离子聚合聚合物的无凝胶工艺
    • US06242537B1
    • 2001-06-05
    • US09260239
    • 1999-03-02
    • Robert Charles BeningCarl Lesley WillisCharles Roy DonahoDaniel Earl GoodwinZaida DiazJohn David Wilkey
    • Robert Charles BeningCarl Lesley WillisCharles Roy DonahoDaniel Earl GoodwinZaida DiazJohn David Wilkey
    • C08F804
    • C08C19/44C08C19/42C08F8/00C08F12/00
    • This invention relates to a gel-free process for making hydrogenated functionalized polymers that mitigates the problem of ionic gel. When multi-alkali metal initiators are used to make these polymers anionically, the process comprises anionically polymerizing at least one monomer with a multi-alkali metal initiator, usually a lithium alkyl, in a hydrocarbon solvent, capping the polymer by adding to the polymer a capping agent that reacts with the ends of the polymer chains such that strongly associating chain ends are formed wherein a strongly associating polymer gel is formed, adding a trialkyl aluminum compound to the polymer gel, whereby the gel dissipates, optionally terminating the polymerization by addition of an alcohol, washing the polymer with aqueous acid, preferably aqueous mineral acid, most preferably phosphoric acid, wherein there is at least one mole of phosphoric acid per mole of alkali metal and at least three moles of phosphoric acid per mole of aluminum, and hydrogenating the polymer with a hydrogenation catalyst. In a second embodiment, the present invention relates to a process for making such polymers which comprises anionically polymerizing them as described and adding a trialkyl aluminum compound prior to the addition of the functionalizing agent and washing the product prior to hydrogenation as described above. In the first embodiment, a gel is formed and then removed. In the second embodiment, the gel never is formed because of the presence of the trialkyl aluminum compound.
    • 本发明涉及一种用于制备氢化官能化聚合物的无凝胶方法,其减轻了离子凝胶的问题。 当使用多碱金属引发剂阴离子制造这些聚合物时,该方法包括在烃溶剂中将至少一种单体与多碱金属引发剂(通常为烷基锂)进行阴离子聚合,通过向聚合物加入聚合物 形成与聚合物链的端部反应的封端剂,从而形成强缔合的链端,其中形成强缔合的聚合物凝胶,将三烷基铝化合物加入到聚合物凝胶中,由此凝胶消散,任选地通过加入聚合物终止聚合 醇,用酸水溶液洗涤聚合物,优选无机酸水溶液,最优选磷酸,其中每摩尔铝存在至少1摩尔磷酸/摩尔碱金属和至少3摩尔磷酸/摩尔氢化 该聚合物与氢化催化剂。 在第二个实施方案中,本发明涉及一种制备这种聚合物的方法,其包括如上所述阴离子聚合它们,并且在加入官能化试剂之前加入三烷基铝化合物并在如上所述的氢化之前洗涤产物。 在第一实施方案中,形成凝胶然后除去。 在第二实施方案中,由于存在三烷基铝化合物,所以不会形成凝胶。
    • 7. 发明授权
    • Process for making hydrogenated gel-free functionalized anionically polymerized polymers
    • 制备无凝胶的官能化阴离子聚合聚合物的方法
    • US06242538B1
    • 2001-06-05
    • US09304915
    • 1999-05-04
    • Robert Charles BeningCarl Lesley WillisJohn David WilkeyZaida Diaz
    • Robert Charles BeningCarl Lesley WillisJohn David WilkeyZaida Diaz
    • C08F804
    • C08F8/04
    • This invention relates to a process for making gel-free functionalized polymers. When multi-lithium initiators are used to make these polymers anionically, the process comprises anionically polymerizing at least one monomer with a multi-lithium initiator in a hydrocarbon solvent, functionalizing the polymer by adding to the polymer a capping agent that reacts with the ends of the polymer chains such that strongly-associating chain ends are formed wherein a polymer gel is formed, adding a trialkyl aluminum compound to the polymer gel, whereby the gel dissipates, adding a sufficient amount of a proton source to provide at least 1 mole of protons per mole of lithium ions and at least 2 moles of protons per mole of aluminum wherein the proton source is an organic acid with a pKa of 11 or less or a mixture of the organic acid and an alkanol, provided that sufficient organic acid is added to provide at least 0.4 moles of protons per mole of lithium ions, hydrogenating the polymer with a hydrogenation catalyst, and optionally washing the polymer with aqueous mineral acid in sufficient.
    • 本发明涉及一种制备不含凝胶的官能化聚合物的方法。 当使用多锂引发剂阴离子制造这些聚合物时,该方法包括在烃溶剂中使多个锂引发剂的至少一种单体阴离子聚合,通过向聚合物中添加与端基反应的封端剂官能化聚合物 聚合物链使得形成强缔合的链端,其中形成聚合物凝胶,将三烷基铝化合物加入到聚合物凝胶中,由此凝胶消散,加入足够量的质子源以提供至少1摩尔的质子 每摩尔锂离子和至少2摩尔质子/摩尔铝,其中质子源是pKa为11或更低的有机酸或有机酸和链烷醇的混合物,条件是将足够的有机酸加入到 每摩尔锂离子提供至少0.4摩尔质子,用氢化催化剂氢化聚合物,并任选地用无机酸水溶液洗涤聚合物 足够了
    • 8. 发明授权
    • Deprotection of polymers prepared with silyloxy protected functional initiators by reaction with hydride reducing agents
    • 通过与氢化物还原剂反应,用甲硅烷氧基保护的官能引发剂制备的聚合物脱保护
    • US06218478B1
    • 2001-04-17
    • US09379843
    • 1999-08-24
    • Robert Charles BeningCarl Lesley Willis
    • Robert Charles BeningCarl Lesley Willis
    • C08C1902
    • C08C19/44
    • The present invention provides a process for making functionalized polymers comprising the steps of (a) initiating polymerization of an unsaturated monomer with a lithium initiator having the structure R1R2R3Si—O—A—Li wherein A is a branched or straight chain bridging group having at least two carbon atoms, R1,R2, and R3 are alkyl, alkoxy, aryl, or alkaryl groups having from 1 to 10 carbon atoms, thus producing a functionalized polymer which has a protecting silyl group at one end thereof; and (b) contacting the protected polymer with aqueous acid to remove residual lithium, and (c) contacting the protected polymer with from 1 to 10 equivalents of an organic or inorganic hydride; and (d) contacting the resulting solution with aqueous acid, and (e) recovering a linear or branched deprotected polymer having one or more terminal functional groups.
    • 本发明提供了制备官能化聚合物的方法,其包括以下步骤:(a)引发不饱和单体与具有结构R1R2R3Si-OA-Li的锂引发剂的聚合,其中A是具有至少两个碳的支链或直链桥连基团 原子,R 1,R 2和R 3是具有1至10个碳原子的烷基,烷氧基,芳基或烷芳基,从而制备其一端具有保护甲硅烷基的官能化聚合物; 和(b)使受保护的聚合物与酸水溶液接触以除去残留的锂,和(c)使被保护的聚合物与1至10当量的有机或无机氢化物接触; 和(d)使所得溶液与酸水溶液接触,和(e)回收具有一个或多个末端官能团的直链或支链脱保护的聚合物。