PROCESS FOR THE CONTINUOUS MANUFACTURE OF ARYL ALKYL CARBONATE AND/OR DIARYL CARBONATE USING VAPOR RECOMPRESSION
    12.
    发明申请
    PROCESS FOR THE CONTINUOUS MANUFACTURE OF ARYL ALKYL CARBONATE AND/OR DIARYL CARBONATE USING VAPOR RECOMPRESSION 有权
    使用蒸汽回收法连续制备碳酸亚铁和碳酸二甲酯的方法

    公开(公告)号:US20140081039A1

    公开(公告)日:2014-03-20

    申请号:US14031836

    申请日:2013-09-19

    CPC classification number: C07C68/065 C07C68/06 C07C68/08 C07C69/96

    Abstract: In an embodiment, a process for preparing an alkyl aryl carbonate and a diaryl carbonate, comprising: reacting a dialkyl carbonate and an aromatic hydroxy compound in a production column 200, 300 to form the alkyl aryl carbonate and the diaryl carbonate; directing a bottom stream of the production column to a reboiler 205, 305, wherein the bottom stream comprises the alkyl aryl carbonate and the diaryl carbonate; heating the bottom stream in the reboiler 205, 305 with heat from an overhead stream of the production column 200, 300 to result in a heated bottom stream; directing a first portion of the heated bottom stream back into the production column 200, 300, wherein the first portion comprises phenol; and collecting the diaryl carbonate and the alkyl aryl carbonate from a second portion of the heated bottom stream.

    Abstract translation: 在一个实施方案中,制备碳酸烷基芳基酯和碳酸二芳基酯的方法包括:在生产塔200,300中使碳酸二烷基酯和芳族羟基化合物反应以形成碳酸烷基芳基酯和碳酸二芳基酯; 将生产塔的底部流引导到再沸器205,305,其中底部流包含碳酸烷基芳基酯和碳酸二芳基酯; 用来自生产塔200,300的顶部料流的热量加热再沸器205,305中的塔底物流,以产生加热的底部料流; 将加热的底部流的第一部分引导回生产塔200,300,其中第一部分包括苯酚; 并从加热的底部料流的第二部分收集碳酸二芳基酯和碳酸烷基芳基酯。

    PROCESS FOR THE MANUFACTURE OF POLYCARBONATE COMPOSITIONS
    14.
    发明申请
    PROCESS FOR THE MANUFACTURE OF POLYCARBONATE COMPOSITIONS 有权
    制备聚碳酸酯组合物的方法

    公开(公告)号:US20140378643A1

    公开(公告)日:2014-12-25

    申请号:US14308866

    申请日:2014-06-19

    Abstract: A continuous process for the manufacture of a polycarbonate comprises: combining an aromatic dihydroxy compound stream and a diaryl carbonate stream to form a mixture; controlling a weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound by: measuring a sound velocity, Vs, in the mixture at an operating temperature of the controlling step; and determining the weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound in the mixture; and adjusting a flow rate of at least one of the aromatic dihydroxy compound stream and the diaryl carbonate stream, if needed, to achieve a desired weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound; and polymerizing the aromatic dihydroxy compound and the diaryl carbonate in the presence of a catalyst to produce the polycarbonate.

    Abstract translation: 用于制造聚碳酸酯的连续方法包括:将芳族二羟基化合物流和碳酸二芳基酯流混合以形成混合物; 通过以下步骤控制碳酸二芳基酯与芳族二羟基化合物的重量或摩尔比:在控制步骤的操作温度下测量混合物中的声速Vs; 并测定混合物中碳酸二芳基酯与芳族二羟基化合物的重量或摩尔比; 并且如果需要,调节至少一种芳族二羟基化合物流和碳酸二芳基酯流的流速,以获得所需的碳酸二芳基酯与芳族二羟基化合物的重量或摩尔比; 并在催化剂存在下使芳族二羟基化合物和碳酸二芳基酯聚合以制备聚碳酸酯。

    PROCESS FOR PRODUCING POLYCARBONATE COMPOSITIONS
    15.
    发明申请
    PROCESS FOR PRODUCING POLYCARBONATE COMPOSITIONS 有权
    生产聚碳酸酯组合物的方法

    公开(公告)号:US20140128526A1

    公开(公告)日:2014-05-08

    申请号:US14074181

    申请日:2013-11-07

    CPC classification number: C08L69/00 C08G64/307 C08L83/04 C08L2201/10

    Abstract: A method for manufacturing a polycarbonate composition having improved transparency can comprise reacting an aromatic dihydroxy compound and a diaryl carbonate under melt polymerization conditions to provide a polycarbonate; and contacting the polycarbonate with a polydiorgano siloxane having a kinematic viscosity of less than 20 mm2/sec at 25° C. as determined in accordance with ASTM D445, and an optional additive thereby making the polycarbonate composition. The polycarbonate composition has haze less than 1% as determined in accordance with ASTM D1003-07, and can be used for optical applications such as automotive headlamps.

    Abstract translation: 制造具有改善的透明度的聚碳酸酯组合物的方法可以包括在熔融聚合条件下使芳族二羟基化合物和碳酸二芳酯反应以提供聚碳酸酯; 并使聚碳酸酯与根据ASTM D445测定的25℃下运动粘度小于20mm 2 /秒的聚二有机硅氧烷接触,和任选的添加剂,由此制备聚碳酸酯组合物。 根据ASTM D1003-07测定,聚碳酸酯组合物的雾度小于1%,可用于汽车前照灯等光学应用。

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