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Catalytic process for the preparation of an aromatic polyamide
Catalytic process for the preparation of an aromatic polyamide
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机译:制备芳族聚酰胺的催化方法
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摘要
The invention provides aromatic polyamides having an improved resistance to thermo-oxidation. This is achieved by carrying out the polycondensation in the presence of a catalyst system which comprises a mixture of a phosphorus compound and a tin(II) compound or is a compound which contains both elements. The process according to the invention allows aromatic polyamides to be obtained which are resistant to thermo- oxidation (discoloration).
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