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    • 2. 发明授权
    • Preparation of antiplasticizers for thermoplastic polyesters
    • 制备热塑性聚酯的抗增塑剂
    • US08692013B2
    • 2014-04-08
    • US13684541
    • 2012-11-25
    • Rick TaborBrian K. MirousTimothy L. LambertMichael E. O'BrienMatthew I. LevinsonDaniel J. Dershowitz
    • Rick TaborBrian K. MirousTimothy L. LambertMichael E. O'BrienMatthew I. LevinsonDaniel J. Dershowitz
    • C07C69/76
    • C08K5/1345C07C67/03C07C67/29C07C69/82C08K5/12Y02P20/582
    • A process for making bis(aryloxyalkyl)terephthalates useful as antiplasticizers for thermoplastic polyesters is disclosed. Dimethyl terephthalate is reacted with an excess of an aryloxyalkanol in the presence of a condensation catalyst to produce an intermediate mixture comprising a bis(aryloxyalkyl)terephthalate, a mono(aryloxyalkyl)terephthalate, and unreacted aryloxyalkanol. This mixture continues to react at reduced pressure while unreacted aryloxyalkanol is removed and the mono-ester content is reduced to less than 1 mole % based on the combined amounts of mono- and bis-esters. Both steps are performed substantially in the absence of oxygen. Additional unreacted aryloxyalkanol is then removed to provide a purified bis(aryloxyalkyl)terephthalate having an overall purity of at least 98 mole % and a yellowness index less than 10. Careful control over catalysis, exposure to air, and other process conditions enables the preparation of high yields of bis(aryloxyalkyl)terephthalates that have low color and other valuable attributes. A method of producing bis(aryloxyalkyl)terephthalate articles having improved compressive strength is also disclosed.
    • 公开了一种制备用作热塑性聚酯的抗增塑剂的双(芳氧基烷基)对苯二甲酸酯的方法。 在缩合催化剂的存在下,对苯二甲酸二甲酯与过量的芳氧基烷醇反应,以产生包含双(芳氧基烷基)对苯二甲酸酯,单(芳氧基烷基)对苯二甲酸酯和未反应的芳氧基烷醇的中间体混合物。 该混合物在减压下继续反应,同时除去未反应的芳氧基烷醇,并且基于单酯和双酯的组合量,单酯含量降低至小于1摩尔%。 两个步骤基本上在不存在氧的情况下进行。 然后除去另外的未反应的芳氧基烷醇,以提供纯度为至少98摩尔%,黄度指数小于10的纯化双(芳氧基烷基)对苯二甲酸酯。小心控制催化,暴露于空气和其它工艺条件使得能够制备 具有低颜色和其他有价值属性的双(芳氧基烷基)对苯二甲酸酯的高收率。 还公开了一种制备具有改善的抗压强度的双(芳氧基烷基)对苯二甲酸酯制品的方法。
    • 3. 发明申请
    • PREPARATION OF ANTIPLASTICIZERS FOR THERMOPLASTIC POLYESTERS
    • 热塑性聚酯抗菌剂的制备
    • US20130085216A1
    • 2013-04-04
    • US13684541
    • 2012-11-25
    • Rick TaborBrian K. MirousTimothy L. LambertMichael E. O'BrienMatthew I. LevinsonDaniel J. Dershowitz
    • Rick TaborBrian K. MirousTimothy L. LambertMichael E. O'BrienMatthew I. LevinsonDaniel J. Dershowitz
    • C07C67/29
    • C08K5/1345C07C67/03C07C67/29C07C69/82C08K5/12Y02P20/582
    • A process for making bis(aryloxyalkyl)terephthalates useful as antiplasticizers for thermoplastic polyesters is disclosed. Dimethyl terephthalate is reacted with an excess of an aryloxyalkanol in the presence of a condensation catalyst to produce an intermediate mixture comprising a bis(aryloxyalkyl)terephthalate, a mono(aryloxyalkyl)terephthalate, and unreacted aryloxyalkanol. This mixture continues to react at reduced pressure while unreacted aryloxyalkanol is removed and the mono-ester content is reduced to less than 1 mole % based on the combined amounts of mono- and bis-esters. Both steps are performed substantially in the absence of oxygen. Additional unreacted aryloxyalkanol is then removed to provide a purified bis(aryloxyalkyl)terephthalate having an overall purity of at least 98 mole % and a yellowness index less than 10. Careful control over catalysis, exposure to air, and other process conditions enables the preparation of high yields of bis(aryloxyalkyl)terephthalates that have low color and other valuable attributes. A method of producing bis(aryloxyalkyl)terephthalate articles having improved compressive strength is also disclosed.
    • 公开了一种制备用作热塑性聚酯的抗增塑剂的双(芳氧基烷基)对苯二甲酸酯的方法。 在缩合催化剂的存在下,对苯二甲酸二甲酯与过量的芳氧基烷醇反应,以产生包含双(芳氧基烷基)对苯二甲酸酯,单(芳氧基烷基)对苯二甲酸酯和未反应的芳氧基烷醇的中间体混合物。 该混合物在减压下继续反应,同时除去未反应的芳氧基烷醇,并且基于单酯和双酯的组合量,单酯含量降低至小于1摩尔%。 两个步骤基本上在不存在氧的情况下进行。 然后除去另外的未反应的芳氧基烷醇,以提供纯度为至少98摩尔%,黄度指数小于10的纯化双(芳氧基烷基)对苯二甲酸酯。仔细控制催化,暴露于空气和其它工艺条件使得能够制备 具有低颜色和其他有价值属性的双(芳氧基烷基)对苯二甲酸酯的高收率。 还公开了一种制备具有改善的抗压强度的双(芳氧基烷基)对苯二甲酸酯制品的方法。
    • 4. 发明授权
    • Process for preparing low unsaturation polyether polyols
    • 制备低不饱和聚醚多元醇的方法
    • US5962748A
    • 1999-10-05
    • US956960
    • 1997-10-23
    • Timothy L. Lambert
    • Timothy L. Lambert
    • C08G18/48C08G65/26C08G65/30C08G65/324C07C41/44
    • C08G18/4866C08G65/2642C08G65/30C08G65/324
    • Polyether polyols having reduced terminal unsaturation are prepared in a process comprising a first step comprising reacting propylene oxide with an initiator having at least two hydroxyl groups in the presence of a basic catalyst, a second step of contacting the polyether product of the first step having allyl terminal unsaturation with an isomerization catalyst whereby the allyl terminal unsaturation of the polyether is reduced by at least 90% conversion to propenyl terminal unsaturation in one step and, in a final step, the resulting polyether product of the first step is contacted with an acid catalyst whereby a substantial amount of the propenyl terminal unsaturation of the polyether is removed and the corresponding polyether having an additional hydroxyl group is obtained.
    • 具有降低的末端不饱和度的聚醚多元醇在包括第一步骤的方法中制备,所述第一步骤包括在碱性催化剂存在下使环氧丙烷与具有至少两个羟基的引发剂反应,第二步是使第一步的聚醚产物与 具有异构化催化剂的末端不饱和键,其中聚醚的烯丙基末端不饱和键在一个步骤中降低至少90%转化为丙烯基末端不饱和度,并且在最后步骤中,将所得第一步的聚醚产物与酸催化剂 由此除去大量的聚醚的丙烯基末端不饱和度,并获得具有另外的羟基的相应的聚醚。
    • 5. 发明申请
    • PREPARATION OF ANTIPLASTICIZERS FOR THERMOPLASTIC POLYESTERS
    • 热塑性聚酯抗菌剂的制备
    • US20120245268A1
    • 2012-09-27
    • US13071952
    • 2011-03-25
    • Rick TaborBrian K. MirousTimothy L. LambertMichael E. O'BrienMatthew I. LevinsonDaniel J. Dershowitz
    • Rick TaborBrian K. MirousTimothy L. LambertMichael E. O'BrienMatthew I. LevinsonDaniel J. Dershowitz
    • C08K5/12C07C69/82C08L67/02
    • C08K5/1345C07C67/03C07C67/29C07C69/82C08K5/12Y02P20/582
    • A process for making bis(aryloxyalkyl)terephthalates useful as antiplasticizers for thermoplastic polyesters is disclosed. Dimethyl terephthalate is reacted with an excess of an aryloxyalkanol in the presence of a condensation catalyst to produce an intermediate mixture comprising a bis(aryloxyalkyl)terephthalate, a mono(aryloxyalkyl)terephthalate, and unreacted aryloxyalkanol. This mixture continues to react at reduced pressure while unreacted aryloxyalkanol is removed and the mono-ester content is reduced to less than 1 mole % based on the combined amounts of mono- and bis-esters. Both steps are performed substantially in the absence of oxygen. Additional unreacted aryloxyalkanol is then removed to provide a purified bis(aryloxyalkyl)terephthalate having an overall purity of at least 98 mole % and a yellowness index less than 10. Careful control over catalysis, exposure to air, and other process conditions enables the preparation of high yields of bis(aryloxyalkyl)terephthalates that have low color and other valuable attributes. A method of producing bis(aryloxyalkyl)terephthalate articles having improved compressive strength is also disclosed.
    • 公开了一种制备用作热塑性聚酯的抗增塑剂的双(芳氧基烷基)对苯二甲酸酯的方法。 在缩合催化剂的存在下,对苯二甲酸二甲酯与过量的芳氧基烷醇反应,以产生包含双(芳氧基烷基)对苯二甲酸酯,单(芳氧基烷基)对苯二甲酸酯和未反应的芳氧基烷醇的中间体混合物。 该混合物在减压下继续反应,同时除去未反应的芳氧基烷醇,并且基于单酯和双酯的组合量,单酯含量降低至小于1摩尔%。 两个步骤基本上在不存在氧的情况下进行。 然后除去另外的未反应的芳氧基烷醇,以提供纯度为至少98摩尔%,黄度指数小于10的纯化双(芳氧基烷基)对苯二甲酸酯。小心控制催化,暴露于空气和其它工艺条件使得能够制备 具有低颜色和其他有价值属性的双(芳氧基烷基)对苯二甲酸酯的高收率。 还公开了一种制备具有改善的抗压强度的双(芳氧基烷基)对苯二甲酸酯制品的方法。
    • 7. 发明授权
    • Method for removal of oxygenate impurities from organic chemical streams
    • 从有机化学物流中去除含氧化合物杂质的方法
    • US6037516A
    • 2000-03-14
    • US975523
    • 1997-11-20
    • Peter S. MorfordTimothy L. LambertWilliam K. Culbreth, III
    • Peter S. MorfordTimothy L. LambertWilliam K. Culbreth, III
    • C07C7/148C07D301/32C07C7/10
    • C07D301/32C07C7/148C07C7/1485
    • Oxygenate impurities are removed from an organic chemical feed or stream by treatment with an aqueous reducing agent and aqueous base, accompanied by separation. An aqueous solution of reducing agent and an aqueous solution of base are typically introduced sequentially into the organic chemical stream, where they may react with any oxygenate impurities present. The reaction products of the oxygenate impurities and aqueous reducing agent and aqueous base are water soluble, and are typically removed in sequential fashion via any suitable separation means. For example, oxygenate impurities such as formaldehyde, acetaldehyde, propionaldehyde, and methyl formate may be removed from a propylene stream by treating the stream sequentially with aqueous sodium bisulfite and aqueous sodium hydroxide, accompanied by separation of the oxygenate impurity reaction products in coalescers.
    • 通过用水性还原剂和碱水溶液处理,伴随着分离,从有机化学原料或料流中除去氧化物杂质。 还原剂的水溶液和碱的水溶液通常依次引入有机化学物流中,在那里它们可以与存在的任何含氧化合物杂质反应。 含氧化合物杂质和水性还原剂和水性碱的反应产物是水溶性的,并且通常通过任何合适的分离方法以顺序的方式除去。 例如,可以通过用亚硫酸氢钠水溶液和氢氧化钠水溶液依次处理流,同时伴随着聚结器中的含氧化合物杂质反应产物的分离,从丙烯流中除去含氧化合物杂质如甲醛,乙醛,丙醛和甲酸甲酯。