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    • 3. 发明授权
    • Aromatic polyester carbonate and method for producing the same
    • 芳香族聚碳酸酯及其制造方法
    • US4107143A
    • 1978-08-15
    • US765333
    • 1977-02-03
    • Hiroo InataTsuto MorinagaTakatoshi KuratsujiTakanori UrasakiShoji Kawase
    • Hiroo InataTsuto MorinagaTakatoshi KuratsujiTakanori UrasakiShoji Kawase
    • C08G63/64C08G63/62
    • C08G63/64
    • The present invention provides a substantially linear aromatic polyester carbonate consisting essentially of hydroxybenzoic acid unit, hydroquinone unit, and carbonate unit as well as, depending on the circumstances, aromatic carboxylic acid unit, and having an inherent viscosity of at least 0.5. The present invention also provides an industrially advantageous method for producing such linear aromatic polyester carbonate through the process steps of melt-polycondensation, and, if necessary, followed by a further polycondensation in solid phase.Such aromatic polyester carbonate which the present invention provides exhibits excellent melt-forming property and melt anisotropy, hence any shaped article obtained by melt-forming of this aromatic polyester carbonate exhibits superior mechanical properties, in particular, excellent Young's modulus of longitudinal elasticity, and so on, which is highly useful as the material for industrial applications. The present invention also provides shaped articles in fiber and film forms having such excellent Young's modulus of longitudinal elasticity as produced from the abovementioned aromatic polyester carbonate.
    • 本发明提供基本上由羟基苯甲酸单元,氢醌单元和碳酸酯单元组成的基本上线性的芳族聚酯碳酸酯,以及根据具体情况,芳族羧酸单元,并且具有至少0.5的特性粘度。 本发明还提供了通过熔融缩聚的方法制备这种线性芳族聚酯碳酸酯的工业上有利的方法,并且如果需要,随后进一步在固相中缩聚。
    • 9. 发明授权
    • Process for preparing polyesters
    • 聚酯的制备方法
    • US4115362A
    • 1978-09-19
    • US784628
    • 1977-04-04
    • Hiroo InataShoji Kawase
    • Hiroo InataShoji Kawase
    • C08G63/19C08G63/199C08G63/21C08G63/78C08G63/18C08G63/22
    • C08G63/19C08G63/199C08G63/21C08G63/78
    • A process for preparing polyesters which comprises (1) a first step of esterifying (A) a difunctional carboxylic acid containing at least 60 mole% of an aromatic dicarboxylic acid, (B) 0 to 80 mole%, based on component (A), of an aliphatic diol and (C) an aromatic monohydroxy compound in an amount of at least 210 mole% as a total of it and component (B) based on component (A), the esterification being performed until the degree of esterification reaches 80 to 98%, and (2) a second step of adding 0 to 80 mole%, based on component (A), of component (B), and an aromatic dihydroxy compound (D) in an amount of 95 to 130 mole% as a total of it and component (B) based on component (A), to the reaction product obtained in the first step and reacting the mixture, the total amount of components (B) used in the first and second steps being 0 to 80 mole% based on component (A).
    • 一种制备聚酯的方法,其包括(1)第一步,酯化(A)含有至少60摩尔%的芳族二羧酸的二官能羧酸,(B)基于组分(A)的0至80摩尔% 的脂肪族二醇和(C)芳族单羟基化合物,其总量为至少210摩尔%,和基于组分(A)的组分(B)),进行酯化直到酯化度达到80〜 98%,和(2)以成分(A)成分为0〜80摩尔%的成分(B)和芳香族二羟基化合物(D)的量为95〜130摩尔%的第二工序,作为 总计和基于组分(A)的组分(B)与第一步中获得的反应产物反应并使混合物反应,第一步和第二步中使用的组分(B)的总量为0至80摩尔% 基于组分(A)。