公开(公告)号：US08293949B2

公开(公告)日：2012-10-23

申请号：US12613144

申请日：2009-11-05

申请人： Zdravko I. Stefanov ,  Jean Paul Chauvel, Jr. ,  Abraham Gonzalez ,  Istvan Lengyel

发明人： Zdravko I. Stefanov ,  Jean Paul Chauvel, Jr. ,  Abraham Gonzalez ,  Istvan Lengyel

IPC分类号： C07C31/20

CPC分类号： C07C29/106 ,  C07C29/88 ,  C07C31/20

摘要： The present invention provides a process for producing low color glycols that comprises altering at least one condition of a reaction component and/or process stream within the process to be unfavorable for the formation of at least one color-producing contaminant intermediate. As such, such intermediates may be reduced in concentration, or even eliminated entirely, from glycols produced by the process. Since they are not present, or are present in reduced number, the intermediates cannot form color-producing contaminants in the glycols, and low color glycols are provided to the customer. Any condition that can discourage the formation of color forming contaminant intermediates can be adjusted, although conditions that can be adjusted by materials or equipment already utilized in the process, e.g., temperature, pressure, pH, concentration of a color-forming contaminant precursor, the presence of one or more solvents or catalysts favorable for the production of the color-producing contaminant or contaminant intermediate, and the like, are preferred.

摘要翻译： 本发明提供了一种生产低级二醇的方法，其包括改变该方法中的反应组分和/或工艺流的至少一种状态，从而不利于形成至少一种产生颜色的污染物中间体。 因此，这种中间体可以从由该方法生产的二醇产生的浓度降低甚至完全消除。 由于它们不存在或以减少的数量存在，所以中间体不能在二醇中形成产生颜色的污染物，并且向客户提供低级二醇。 可以调节可以阻止形成成色污染物中间体形成的任何条件，尽管可以通过已经在该方法中使用的材料或设备例如温度，压力，pH，成色污染物前体的浓度， 优选存在一种或多种有利于生产发色污染物或污染物中间体的溶剂或催化剂等。

公开(公告)号：US20100121113A1

公开(公告)日：2010-05-13

申请号：US12613144

申请日：2009-11-05

申请人： Zdravko I. Stefanov ,  Jean Paul Chauvel, JR. ,  Abraham Gonzalez ,  Istvan Lengyel

发明人： Zdravko I. Stefanov ,  Jean Paul Chauvel, JR. ,  Abraham Gonzalez ,  Istvan Lengyel

IPC分类号： C07C31/20

CPC分类号： C07C29/106 ,  C07C29/88 ,  C07C31/20

摘要： The present invention provides a process for producing low color glycols that comprises altering at least one condition of a reaction component and/or process stream within the process to be unfavorable for the formation of at least one color-producing contaminant intermediate. As such, such intermediates may be reduced in concentration, or even eliminated entirely, from glycols produced by the process. Since they are not present, or are present in reduced number, the intermediates cannot form color-producing contaminants in the glycols, and low color glycols are provided to the customer. Any condition that can discourage the formation of color forming contaminant intermediates can be adjusted, although conditions that can be adjusted by materials or equipment already utilized in the process, e.g., temperature, pressure, pH, concentration of a color-forming contaminant precursor, the presence of one or more solvents or catalysts favorable for the production of the color-producing contaminant or contaminant intermediate, and the like, are preferred.

摘要翻译： 本发明提供了一种生产低级二醇的方法，其包括改变该方法中的反应组分和/或工艺流的至少一种状态，从而不利于形成至少一种产生颜色的污染物中间体。 因此，这种中间体可以从由该方法生产的二醇产生的浓度降低甚至完全消除。 由于它们不存在或以减少的数量存在，所以中间体不能在二醇中形成产生颜色的污染物，并且向客户提供低级二醇。 可以调节可以阻止形成成色污染物中间体形成的任何条件，尽管可以通过已经在该方法中使用的材料或设备例如温度，压力，pH，成色污染物前体的浓度， 优选存在一种或多种有利于生产发色污染物或污染物中间体的溶剂或催化剂等。