| NEW SYNTHETIC METHOD OF 4,4'-OXYBIS(BENZOIC ACID)AND ITS APPLICATION IN POLYESTER |
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| 作者姓名： | Zheng Hua TIAN Shu Mei LIU Peng LEI Gang LI |
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| 作者单位： | Anshan Institute of Iron & Steel Technology, Anshan 114002 |
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| 摘 要： | 4,4'-Oxybis(benzoic acid)(Ⅰ)is an important monomer for making synthetic resin,heat resistant filmand liquid crystal fiber,etc.It has been synthesized either by the oxidation of 4,4'-dimethyl diphenylether,or by the electrophilic substitution of diphenyl ether,these substituents introduced into thebenzene ring can be further transformed into carboxylic groups.Diphenyl ethers are usually prepared fromphenols and halobenzenes through Ullmann resction.Due to the high reaction temerature(usually above200℃),long time heating and the formation of isomers,it is difficult to obtain pure products in highyields.
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NEW SYNTHETIC METHOD OF 4,4'-OXYBIS (BENZOIC ACID) AND ITS APPLICATION IN POLYESTER |
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| Zheng Hua TIAN,Shu Mei LIU,Peng LEI,Gang LI.NEW SYNTHETIC METHOD OF 4,4''''-OXYBIS(BENZOIC ACID)AND ITS APPLICATION IN POLYESTER[J].Chinese Chemical Letters,1991,2(2):119-120. |
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| Authors: | Zheng Hua TIAN Shu Mei LIU Peng LEI Gang LI |
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| Institution: | Anshan Institute of Iron & Steel Technology, Anshan 114002 |
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| Abstract: | 4, 4'-Oxybis (benzoic acid) (Ⅰ) is an important monomer for making synthetic resin, heat resistant film and liquid crystal fiber, etc. It has been synthesized either by the oxidation of 4, 4'-dimethyl diphenyl ether, or by the electrophilic substitution of diphenyl ether, those substituents introduced into the benzene ring can be further transformed into carboxylic groups. Diphenyl ethers are usually prepared from phenols and halobenzenes through Ullmann resction. Due to the high reaction temerature (usually above 200℃), long time heating and the formation of isomers, it is difficult to obtain pure products in high yields. |
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