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    • 18. 发明授权
    • Weatherable polycarbonates comprising oxanilide structural units, method, and articles made therefrom
    • 耐候性聚碳酸酯,其包含草酰替苯胺结构单元,方法和由其制成的制品
    • US06462168B1
    • 2002-10-08
    • US09842616
    • 2001-04-25
    • Tiberiu Mircea SiclovanDaniel Joseph BrunelleJames Edward PickettJoseph Anthony Suriano
    • Tiberiu Mircea SiclovanDaniel Joseph BrunelleJames Edward PickettJoseph Anthony Suriano
    • C08G6400
    • C08G64/12
    • In one embodiment the present invention is a polycarbonate comprising structural units derived from at least one dihydric phenol, a carbonate precursor, and at least one member selected from the group consisting of an oxanilide-comprising compound, an oxamate-comprising compound, and mixtures thereof. In another embodiment the present invention is a method for making a polycarbonate comprising structural units derived from at least one dihydric phenol and at least one member selected from the group consisting of an oxanilide-comprising compound, an oxamate-comprising compound, and mixtures thereof, which comprises the step of contacting under reactive conditions at least one dihydric phenol, a carbonate precursor, and at least one member selected from the group consisting of an oxanilide-comprising compound, an oxamate-comprising compound, and mixtures thereof. In still another embodiment the present invention is an article comprising a polycarbonate comprising oxanilide structural units. In still another embodiment the present invention is a method for making a symmetrical or unsymmetrical oxanilide-comprising dihydric phenol which comprises the step of contacting at least one aromatic amine bearing a hydroxy group with a diaryl oxalate or a dialkyl oxalate bearing alkyl groups each substituted with at least one electron-withdrawing group. In still another embodiment the present invention is a method for making an oxamate-comprising monohydric phenol which comprises the step of contacting an aromatic amine bearing a hydroxy group with a diaryl oxalate or a dialkyl oxalate bearing alkyl groups each substituted with at least one electron-withdrawing group.
    • 在一个实施方案中,本发明是包含衍生自至少一种二元酚,碳酸酯前体和至少一种选自由含草酰替苯的化合物,含草酸酯化合物及其混合物组成的组中的至少一种的结构单元的聚碳酸酯 。 在另一个实施方案中,本发明是一种制备聚碳酸酯的方法,该聚碳酸酯包含衍生自至少一种二元酚的结构单元和至少一种选自由含草酰替苯的化合物,含草酸酯化合物及其混合物组成的组, 其包括在反应条件下使至少一种二元酚,碳酸酯前体和选自由含草酰替苯的化合物,含草酸酯化合物及其混合物中的至少一种接触的步骤。 在另一个实施方案中,本发明是包含含有草酰替苯胺结构单元的聚碳酸酯的制品。 在另一个实施方案中,本发明是一种制备包含对称或不对称的草酰替苯胺的二元酚的方法,其包括使至少一种带有羟基的芳族胺与草酸二芳基酯或带有烷基的二烷基酯的烷基基团接触的步骤, 至少一个吸电子基团。 在另一个实施方案中,本发明是一种制备含草酸羟基的一元酚的方法,其包括使带有羟基的芳族胺与草酸二芳基酯或带有烷基的草酸二烷基酯接触的步骤,每个烷基取代有至少一个电子 - 退出组。