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    • 6. 发明申请
    • METHOD FOR PRODUCING ALIPHATIC POLYESTER HAVING INCREASED MOLECULAR WEIGHT
    • 生产具有增加的分子量的脂肪族聚酯的方法
    • US20140051823A1
    • 2014-02-20
    • US14009896
    • 2012-01-17
    • Yasushi IchikawaHideharu KimuraAkira Ishii
    • Yasushi IchikawaHideharu KimuraAkira Ishii
    • C08G63/78
    • C08G63/78C08G18/4238C08G18/73C08G63/916Y02P20/149
    • The problem to be solved by the present invention is to provide a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight which prevents evaporation of diisocyanate at the step of mixing the diisocyanate with the aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point of the prepolymer and enables uniform mixing of the diisocyanate with the aliphatic polyester prepolymer. In order to solve this problem, the present invention provides a method for producing an aliphatic polyester having an increased molecular weight comprising the steps of: (i) quantitatively injecting a diisocyanate into an aliphatic polyester prepolymer which has a number average molecular weight of 5000 or higher and has terminal hydroxyl groups and in which at least one acid component is a succinic acid compound, in a molten state at a temperature not lower than the melting point thereof, wherein the amount of diisocyanate is equivalent to between one tenth and two times the amount of the hydroxyl groups in the aliphatic polyester prepolymer, (ii) quantitatively and continuously mixing the diisocyanate-containing aliphatic polyester prepolymer obtained at step (i) by a static mixer, discharging same from the static mixer, and then supplying same to a coupling reaction tank, and (iii) reacting the aliphatic polyester prepolymer with the diisocyanate in the coupling reaction tank.
    • 本发明要解决的问题是提供一种连续有效地制造具有增加的分子量的脂族聚酯的方法,该方法在熔融状态下将二异氰酸酯与脂族聚酯预聚物混合在一起的步骤中防止二异氰酸酯蒸发 温度不低于预聚物的熔点,可使二异氰酸酯与脂族聚酯预聚物均匀混合。 为了解决这个问题,本发明提供一种生产分子量增加的脂族聚酯的方法,包括以下步骤:(i)将二异氰酸酯定量注入数均分子量为5000的脂族聚酯预聚物或 更高且具有末端羟基,并且其中至少一种酸组分是琥珀酸化合物,在不低于其熔点的温度下处于熔融状态,其中二异氰酸酯的量等于十二分之一到二分之一 脂肪族聚酯预聚物中的羟基量,(ii)通过静态混合器将步骤(i)中获得的含二异氰酸酯的脂族聚酯预聚物定量连续混合,从静态混合器中排出,然后将其提供给偶联剂 反应罐,和(iii)在偶联反应槽中使脂族聚酯预聚物与二异氰酸酯反应。
    • 7. 发明授权
    • Method for producing aliphatic polyester having increased molecular weight
    • 具有分子量增加的脂肪族聚酯的制造方法
    • US08852517B2
    • 2014-10-07
    • US13997364
    • 2011-04-19
    • Yasushi IchikawaHideharu KimuraAkira Ishii
    • Yasushi IchikawaHideharu KimuraAkira Ishii
    • B01J19/20C08G18/42C08G18/73C08G18/08
    • C08G18/4238B01F7/169B01F7/18B01F15/028C08G18/0895C08G18/73C08G63/916Y02P20/149
    • The present invention addresses the problem of providing a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight by preventing evaporation of a diisocyanate when blending the diisocyanate with an aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point thereof so that the diisocyanate and the aliphatic polyester prepolymer are uniformly blended.In order to solve the above-mentioned problem, the present invention provides a method for producing an aliphatic polyester having an increased molecular weight comprising the steps of (i) quantitatively injecting a diisocyanate into an aliphatic polyester prepolymer which has a number average molecular weight of 5,000 or higher and has terminal hydroxyl groups and in which at least one acid component is a succinic acid compound, in a melting state at a temperature not lower than the melting point thereof wherein the amount of the diisocyanate is equivalent to between one tenth and two times the amount of hydroxyl groups in the aliphatic polyester prepolymer, (ii) quantitatively and continuously introducing the diisocyanate-containing aliphatic polyester prepolymer obtained at the step (i) into a mixing tank, discharging same from the mixing tank under stirring and supplying it to a coupling reaction tank, and (iii) reacting the aliphatic polyester prepolymer with the diisocyanate in the coupling reaction tank.
    • 本发明的目的在于提供一种连续而有效地制造分子量增加的脂肪族聚酯的方法,该方法通过防止二异氰酸酯与脂肪族聚酯预聚物在不低于熔点 点,使得二异氰酸酯和脂肪族聚酯预聚物均匀混合。 为了解决上述问题,本发明提供了具有增加的分子量的脂肪族聚酯的制造方法,其特征在于,包括以下步骤:(i)将二异氰酸酯定量注入脂族聚酯预聚物中,所述脂族聚酯预聚物的数均分子量为 5,000以上,具有末端羟基,其中至少一种酸成分为琥珀酸化合物,在不低于其熔点的熔融状态下,二异氰酸酯的量相当于十分之一至二十分之一 (ii)将步骤(i)中得到的含二异氰酸酯的脂肪族聚酯预聚物定量连续地引入混合槽中,在搅拌槽中从混合槽中排出,并将其供给到 偶联反应槽,和(iii)使脂族聚酯预聚物与二异氰酸酯在t中反应 他耦合反应罐。
    • 10. 发明授权
    • Method for producing aliphatic polyester having increased molecular weight
    • 具有分子量增加的脂肪族聚酯的制造方法
    • US08865081B2
    • 2014-10-21
    • US14009896
    • 2012-01-17
    • Yasushi IchikawaHideharu KimuraAkira Ishii
    • Yasushi IchikawaHideharu KimuraAkira Ishii
    • B01J19/20C08G18/42C08G63/78C08G63/91
    • C08G63/78C08G18/4238C08G18/73C08G63/916Y02P20/149
    • The problem to be solved by the present invention is to provide a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight which prevents evaporation of diisocyanate at the step of mixing the diisocyanate with the aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point of the prepolymer and enables uniform mixing of the diisocyanate with the aliphatic polyester prepolymer. In order to solve this problem, the present invention provides a method for producing an aliphatic polyester having an increased molecular weight comprising the steps of: (i) quantitatively injecting a diisocyanate into an aliphatic polyester prepolymer which has a number average molecular weight of 5000 or higher and has terminal hydroxyl groups and in which at least one acid component is a succinic acid compound, in a molten state at a temperature not lower than the melting point thereof, wherein the amount of diisocyanate is equivalent to between one tenth and two times the amount of the hydroxyl groups in the aliphatic polyester prepolymer, (ii) quantitatively and continuously mixing the diisocyanate-containing aliphatic polyester prepolymer obtained at step (i) by a static mixer, discharging same from the static mixer, and then supplying same to a coupling reaction tank, and (iii) reacting the aliphatic polyester prepolymer with the diisocyanate in the coupling reaction tank.
    • 本发明要解决的问题是提供一种连续有效地制造具有增加的分子量的脂族聚酯的方法,该方法在熔融状态下将二异氰酸酯与脂族聚酯预聚物混合在一起的步骤中防止二异氰酸酯蒸发 温度不低于预聚物的熔点,可使二异氰酸酯与脂族聚酯预聚物均匀混合。 为了解决这个问题,本发明提供一种生产分子量增加的脂族聚酯的方法,包括以下步骤:(i)将二异氰酸酯定量注入数均分子量为5000的脂族聚酯预聚物或 更高且具有末端羟基,并且其中至少一种酸组分是琥珀酸化合物,在不低于其熔点的温度下处于熔融状态,其中二异氰酸酯的量等于十二分之一到二分之一 脂肪族聚酯预聚物中的羟基量,(ii)通过静态混合器将步骤(i)中获得的含二异氰酸酯的脂族聚酯预聚物定量连续混合,从静态混合器中排出,然后将其提供给偶联剂 反应罐,和(iii)在偶联反应槽中使脂族聚酯预聚物与二异氰酸酯反应。