发明授权
US4009154A Process for preparing aromatic polyamides with sodium carbonate hydrate
as acid acceptor
失效
用碳酸钠水合物作为酸受体制备芳族聚酰胺的方法
- 专利标题： Process for preparing aromatic polyamides with sodium carbonate hydrate as acid acceptor
- 专利标题（中）： 用碳酸钠水合物作为酸受体制备芳族聚酰胺的方法
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申请号： US582403申请日： 1975-05-29
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公开(公告)号： US4009154A公开(公告)日： 1977-02-22
- 发明人: Takashi Noma , Hiroshi Fujie , Shuji Ozawa
- 申请人： Takashi Noma , Hiroshi Fujie , Shuji Ozawa
- 申请人地址： JA Osaka
- 专利权人： Teijin Limited
- 当前专利权人： Teijin Limited
- 当前专利权人地址： JA Osaka
- 优先权： JA49-61786 19740603; JA49-87490 19740801
- 主分类号： C08G69/12
- IPC分类号： C08G69/12 ; C08G69/32 ; C08G69/48 ; C08G69/28
摘要：
A process for preparing aromatic polyamides which comprising contacting (I) a solution or dispersion consisting of a solution or dispersion in a polar, non-basic and inert organic liquid medium of at least one starting material selected from the group consisting ofI. an aromatic aminocarboxylic acid halide hydrohalogenide,Ii. a mixture of an aromatic dicarboxylic acid halide and an aromatic diamine dihydrohalogenide, andIii. a low molecular weight aromatic polyamide having an inherent viscosity of no greater than 0.2 as measured on a solution of 0.5 gram of the polyamide in 100 ml of concentrated sulfuric acid at 30.degree.C., with(II) an aqueous slurry consisting of a dispersion in water of a sodium carbonate hydrate.