PROCESS FOR THE PREPARATION OF BENZENE DERIVATIVES FROM FURAN DERIVATIVES
    2.
    发明申请
    PROCESS FOR THE PREPARATION OF BENZENE DERIVATIVES FROM FURAN DERIVATIVES 有权
    从呋喃衍生物制备苯并衍生物的方法

    公开(公告)号:US20160137579A1

    公开(公告)日:2016-05-19

    申请号:US14435470

    申请日:2013-10-22

    Abstract: Benzene derivatives of the formula (I); wherein R1 and R2, are the same or different and independently are selected from the group consisting of hydrogen, alkyl, aralkyl, —CHO, —CH2OR3, —CH(OR4)(OR5) and —COOR6, wherein R3, R4 and R5 are the same or different and are selected from hydrogen, alkyl, aryl, alkaryl, aralkyl, alkylcarbonyl or arylcarbonyl, or wherein R4 and R5 together form an alkylene group and wherein R6 is selected from hydrogen, alkyl and aryl, are prepared in a process, which comprises: reacting a furan derivative of formula (II): wherein R1 and R2 have the meanings above, with ethylene under cycloaddition reaction conditions in the presence of an acid solvent to produce the benzene derivative, wherein the acid solvent is a carboxylic acid and is present in a weight ratio acid solvent to furan derivative from 1:1 to 250:1.

    Abstract translation: 式(I)的苯衍生物; 其中R 1和R 2相同或不同并且独立地选自氢,烷基,芳烷基,-CHO,-CH 2 OR 3,-CH(OR 4)(OR 5)和-COOR 6,其中R 3,R 4和R 5是 相同或不同,选自氢,烷基,芳基,烷芳基,芳烷基,烷基羰基或芳基羰基,或其中R4和R5一起形成亚烷基,其中R6选自氢,烷基和芳基, 其包括:在酸溶剂的存在下,在环加成反应条件下使式(II)的呋喃衍生物(其中R1和R2具有上述含义)与乙烯反应,生成苯衍生物,其中酸溶剂是羧酸, 以1:1至250:1的比例存在于酸溶剂与呋喃衍生物的重量比中。

    METHOD FOR PREPARING A POLYESTER UNDER SPECIFIC ESTERIFICATION CONDITIONS
    6.
    发明申请
    METHOD FOR PREPARING A POLYESTER UNDER SPECIFIC ESTERIFICATION CONDITIONS 有权
    在特定条件下制备聚酯的方法

    公开(公告)号:US20170073462A1

    公开(公告)日:2017-03-16

    申请号:US15122960

    申请日:2015-03-11

    CPC classification number: C08G63/80 C08G63/16 C08G63/181 C08G63/78 C08G63/866

    Abstract: A polyester including poly(ethylene 2,5-furandicarboxylate is prepared by esterification of a starting mixture including 2,5-furandicarboxylic acid and ethylene glycol to form an ester composition, and by subjecting the ester composition thus obtained to polycondensation at reduced pressure in the presence of a polycondensation catalyst to obtain a polycondensate. The mixture is reacted under conditions such that the esterification potential as defined by Esterification Potential (EsPo)=(MR−1)2*PH2O(T), where MR represents the molar ratio of ethylene glycol over 2,5-furandicarboxylic acid, MR being greater than 1; PH2O(T) represents the pure component vapor pressure (in bar) of water at temperature T, which is the final reaction temperature in the esterification mixture before the pressure is reduced to effect the polycondensation, is less than 0.8.

    Abstract translation: 通过使包含2,5-呋喃二甲酸和乙二醇的起始混合物酯化以形成酯组合物制备聚(乙二醇2,5-呋喃二羧酸酯)的聚酯,并将由此得到的酯组合物在减压下进行缩聚 存在缩聚催化剂以获得缩聚物,使混合物在酯化电位(EsPo)=(MR-1)2 * PH2O(T)所定义的条件下反应,其中MR表示乙烯的摩尔比 乙二醇超过2,5-呋喃二羧酸,MR大于1; PH2O(T)代表温度T下水的纯成分蒸气压(以bar为单位),即在压力降低之前酯化混合物中的最终反应温度 进行缩聚时,小于0.8。

    POLYESTER AND METHOD FOR PREPARING SUCH A POLYESTER
    7.
    发明申请
    POLYESTER AND METHOD FOR PREPARING SUCH A POLYESTER 有权
    用于制备这种聚酯的聚酯和方法

    公开(公告)号:US20170015780A1

    公开(公告)日:2017-01-19

    申请号:US15123724

    申请日:2015-03-11

    CPC classification number: C08G63/16 C08G63/181 C08G63/80 C08G63/866

    Abstract: A polyester, including ethylene 2,5-furandicarboxylateunits, also includes diethylene glycol residues, the content of which is less than 0.045, in moles per mole of 2,5-furandicarboxylate moieties. The polyester composition can be prepared with a method where a starting mixture is subjected to esterification of 2,5-furandicarboxylic acid or transesterification of an ester thereof with ethylene glycol in the presence of a basic compound and/or an ammonium compound capable of suppressing the formation of diethylene glycol.

    Abstract translation: 包括2,5-呋喃二羧酸乙二醇酯的聚酯还包括每摩尔2,5-呋喃二羧酸酯部分的二甘醇残基,其含量小于0.045摩尔。 聚酯组合物可以通过在碱性化合物和/或铵化合物的存在下使起始混合物进行2,5-呋喃二羧酸酯化或其酯与乙二醇的酯交换的方法来制备, 形成二甘醇。

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