Thermotropic, wholly aromatic polyesters
    4.
    发明授权
    Thermotropic, wholly aromatic polyesters 失效
    热致全芳香族聚酯

    公开(公告)号:US4536561A

    公开(公告)日:1985-08-20

    申请号:US627972

    申请日:1984-07-03

    CPC分类号: C08G63/6822 C08G63/605

    摘要: Thermotropic, wholly aromatic polyesters containing condensed residues of(a) p-hydroxy benzoic acid,(b) 3-chloro-4-hydroxy benzoic acid,(c) isophthalic acid,(d) hydroquinone and(e) 3,4'- and/or 4,4'-dihydroxy-diphenyl, -diphenyl ether and/or -diphenyl sulphidehave high rigidity and toughness and yet are easily processable.

    摘要翻译: 含有(a)对羟基苯甲酸,(b)3-氯-4-羟基苯甲酸,(c)间苯二甲酸,(d)氢醌和(e)3,4'-二羟基苯甲酸的缩合残基的热致全芳香族聚酯, 和/或4,4'-二羟基 - 二苯基,二苯基醚和/或二苯基硫化物具有高刚性和韧性,并且易于加工。

    Process for the preparation of thermoplastic aromatic
polyphosphonatocarbonates with improved heat-ageing resistance, and
their use
    6.
    发明授权
    Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-ageing resistance, and their use 失效
    具有改善耐热老化性的热塑性芳族聚碳酸亚烃酯的制备方法及其用途

    公开(公告)号:US4401802A

    公开(公告)日:1983-08-30

    申请号:US224077

    申请日:1981-01-12

    CPC分类号: C08G64/00 C08G79/04

    摘要: Thermoplastic polyphosphonatocarbonates prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a catalyst selected from the group consisting of (a) tetra-C.sub.1 -C.sub.18 -alkyl titanates, (b) di-C.sub.2 -C.sub.4 -alkyl-tin oxides, (c) di-C.sub.2 -C.sub.4 -alkyl-di-C.sub.1 -C.sub.4 -alkoxy-tin compounds, (d) tetra-C.sub.3 -C.sub.18 -alkyl zirconates, (e) tri-C.sub.2 -C.sub.18 -alkyl vanadylates and (f) mixtures of germanium dioxide or titanium dioxide and at least one of (a) to (e) in a weight ratio of 1:3 to 3:1 at a temperature of from 80.degree.-340.degree. C. and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonates and phosphonic diaryl ester being from 0.91:1 to 0.99:1.

    摘要翻译: 在选自以下的催化剂存在下,将至少一种芳族二羟基化合物与碳酸二芳酯和膦酸二芳基酯缩聚制备的热塑性聚膦酸碳酸酯:(a)四-C1-烷基钛酸酯,(b)二 - (c)二-C2-C4-烷基 - 二-C1-C4烷氧基锡化合物,(d)四-C 3 -C 18烷基锆酸盐,(e)三-C2-烷基 - C18烷基氧钒酸酯和(f)二氧化锗或二氧化钛与至少一种(a)至(e)的混合物,重量比为1:3至3:1,温度为80-340℃ 并且在惰性气体气氛中在600至0.1mm Hg的压力下,碳酸二芳酯与膦酸二芳基酯的摩尔比为5:95至95:5,芳族二羟基化合物与碳酸二芳基酯的摩尔比 和膦酸二芳基酯为0.91:1至0.99:1。