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    • 65. 发明公开
    • BRANCHED POLYCARBONATES AND PROCESS FOR PRODUCTION THEREOF
    • VERZWEIGTE POLYKARBONATE UND VERFAHREN ZUR HERSTELLUNG。
    • EP0383954A1
    • 1990-08-29
    • EP89910202.4
    • 1989-09-06
    • IDEMITSU PETROCHEMICAL COMPANY LIMITED
    • OKAMOTO, Masaya Idemitsu Petrochemical Company
    • C08G64/00
    • C08G64/14
    • A branched polycarbonate and a process for its production are disclosed. The branched polycarbonate has a branched nucleus structure derived from at least one of α,α', α"-tris(4-hydroxyphenyl)-1,3,5-triisopropylbenzene, 1-(α-methyl-α-(4'-hydroxephenyl)ethyl]-4-[α',α'-bis(4- "-hydroxyphenyl)ethyl]benzene, phloroglucinol and trimellitic acid, has a viscosity-average molecular weight of 15,000 to 40,000, and contains up to 3.5 wt % of acetone-solubles. The process uses as the starting material at least one compound having three or more functional groups, such as those described above, and comprises reacting a mixture of a poly- carbonate oligomer prepared by using phosgene with other material(s) in a turbulent flow state and, when the viscosity is increased, reacting them further in a laminar flow state while adding thereto an aqueous alkali solution. The branched polycarbonate has an excellent impact resistance and is suited for blow molding.
    • 新的支化聚碳酸酯(A)具有衍生自以下cpds之一的支链核结构:(1)α,α',α“ - 三(4-羟基苯基)-1,3,5-三异丙基苯( 2)1-α-甲基-α-(4'-羟基苯基)乙基)-4-(α,α-双(4“ - 羟基苯基)乙基)苯,(3)间苯三酚和(4)偏苯三酸。 粘均分子量 重量。 (A)为15000-40000。 (A)含有3.5重量%以下的丙酮可溶物。 用于制备(A)的方法的原料包含(i)基于芳族二价酚衍生物,三价或更高价数cpds的聚碳酸酯低聚物。 和光气,(ii)芳族二价酚衍生物,和(iii)终止剂。 该方法包括(1)使溶胶反应。 contg。 起始材料处于湍流状态,(2)当其粘度增加时,加入混合物中的碱溶液。 同时将流动条件改变为层流状态。
    • 69. 发明公开
    • Novel copolycarbonate
    • 共聚碳酸酯。
    • EP0302712A2
    • 1989-02-08
    • EP88307166.4
    • 1988-08-03
    • Asahi Kasei Kogyo Kabushiki Kaisha
    • Yokota, MasahisaKomiya, KyosukeShimizu, AtsushiYamataka, KazunoriNomura, Tadanori
    • C08G64/00C08G18/44
    • C08G18/44C08G64/0216C08G64/18
    • A novel copolycarbonate is provided, which comprises recurring units respectively of the formulae:
      in a molar ratio of units (A) to units (B) of from 9:1 to 1:9. The copolycarbonate has a number average molecular weight of from 300 to 50,000. The copolycarbonate is useful as a reactive polymer for producing final polymers such as a polyurethane and a thermoplastic elastomer. The copolycarbonate as well as various final polymers produced therefrom have excellent resistance to hydrolysis, light, chlorine, oxidative degradation, heat, etc. The poly­urethane and the thermoplastic elastomer containing units of the novel copolycarbonate as soft segments exhibit remarkably improved flexibility and elastic recovery as compared to those of the conventional polymers.
    • 提供了一种新型的共聚碳酸酯,其包含分别具有式(A)与单元(B)的摩尔比为9:1至1:9的式:CHEM的重复单元。 共聚碳酸酯的数均分子量为300〜50000。 共聚碳酸酯可用作生产最终聚合物如聚氨酯和热塑性弹性体的反应性聚合物。 共聚碳酸酯以及由其制备的各种最终聚合物具有优异的耐水解,轻,氯,氧化降解,加热等性能。聚氨酯和含有新型共聚碳酸酯作为软链段的单元的热塑性弹性体显示出显着提高的柔韧性和弹性回复率 与常规聚合物相比。