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WEATHERABLE POLYCARBONATES COMPRISING OXANILIDE STRUCTURAL UNITS, METHOD, AND ARTICLES MADE THEREFROM
WEATHERABLE POLYCARBONATES COMPRISING OXANILIDE STRUCTURAL UNITS, METHOD, AND ARTICLES MADE THEREFROM
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机译:包括草酸酯结构单元的耐候性聚碳酸酯,方法和制品
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摘要
In one embodiment the preset 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 policarbonate 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.
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