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    • 5. 发明授权
    • Process for producing aromatic polyesters
    • 制备芳族聚酯的方法
    • US4311823A
    • 1982-01-19
    • US108951
    • 1979-12-31
    • Shozaburo ImaiHaruo SuzukiKuniaki AsaiKatsuji Ueno
    • Shozaburo ImaiHaruo SuzukiKuniaki AsaiKatsuji Ueno
    • C08G63/00C08G63/60
    • C08G63/605
    • In a process for producing aromatic polyesters by bulk condensation of polyester forming reactant the improvement which comprises using three reaction vessels, reacting a reactant compound with an acid anhydride to effect an alkanolylation reaction in the first reaction vessel to thereby prepare a monomer, removing the acids by-produced in said reaction, forming or not forming an oligomer from a part or whole of said monomer, then transferring the reaction product of the first vessel into the second reaction vessel, polycondensing said monomer and/or oligomer to produce a prepolymer in the second reaction vessel, transferring the reaction product of the second vessel into the third reaction vessel, and heating said prepolymer in said third reaction vessel, thereby obtaining an aromatic polyester of high polymerization degree.
    • 在通过聚酯形成反应物的体积缩合制备芳族聚酯的方法中,其改进包括使用三个反应容器,使反应物化合物与酸酐反应以在第一反应容器中进行烷基聚合反应,从而制备单体,除去酸 在所述反应中副产物,从所述单体的一部分或全部形成或不形成低聚物,然后将第一容器的反应产物转移到第二反应容器中,使所述单体和/或低聚物缩聚以在 第二反应容器,将第二容器的反应产物转移到第三反应容器中,并加热所述第三反应容器中的所述预聚物,从而获得高聚合度的芳族聚酯。
    • 6. 发明授权
    • Process for producing oxybenzoyl copolyesters
    • 制备氧苯甲酰基共聚酯的方法
    • US4316004A
    • 1982-02-16
    • US143531
    • 1980-04-25
    • Shozaburo ImaiHiroaki Sugimoto
    • Shozaburo ImaiHiroaki Sugimoto
    • C08G63/00C08G63/60C08G63/66C08G63/688C08G63/02
    • C08G63/66C08G63/605C08G63/688
    • A process for producing oxybenzoyl copolyesters comprising 3 to 300 of repeating unit of the formula, ##STR1## wherein m and n are each 0 or 1, and W is --O--, --SO.sub.2 --, --S-- or --CO--, which comprises reacting a compound of the formula, ##STR2## wherein R.sup.1 is a hydrogen atom, a benzyl, lower alkyl or phenyl group, and Y is a hydrogen atom or a lower alkanoyl group, with a compound of the formula, ##STR3## wherein X is a halogen atom, in the presence of an aliphatic, alicyclic or aromatic hydrocarbon solvent having a boiling point of 100.degree. to 260.degree. C. under atmospheric pressure to produce bis(carboxyphenyl)phthalate, adding a compound of the formula, ##STR4## wherein W is --O--, --SO.sub.2 --, --S-- or --CO--, Z is a hydrogen atom or an alkanoyl group, and m and n are each 0 or 1, and optionally a compound of the formula, ##STR5## wherein R.sup.2 and R.sup.3 are each a hydrogen atom, a benzyl, lower alkyl or phenyl group, and carrying out polycondensation with the removal of the solvent and byproducts so that the polycondensation system is made substantially free from the solvent at least at the end of the polycondensation to carry out substantial bulk polycondensation.
    • 其包含3至300个下式的重复单元,其中m和n各自为0或1,W为-O-,-SO 2 - , - S - 或-CO-,其包括使下式的化合物,其中R 1是氢原子,苄基,低级烷基或苯基,Y是氢原子或低级烷酰基,其中R 1是氢原子, 在大气压下在沸点为100-260℃的脂肪族,脂环族或芳族烃溶剂的存在下,其中X为卤素原子的式(III)化合物,得到双(羧基苯基 )邻苯二甲酸酯,加入下式的化合物,其中W是-O - , - SO 2 - , - S-或-CO-,Z是氢原子或烷酰基,m和n是 每个0或1,以及任选的下式化合物,其中R 2和R 3各自为氢原子,苄基,低级烷基或苯基,并且与去除溶剂进行缩聚反应 和副产物,使得至少在缩聚结束时使缩聚体系基本上不含溶剂,以进行大量的缩聚。