发明名称 |
PROCESS FOR PRODUCING HIGH-QUALITY TEREPHTHALIC ACID SUIT-ABLE FOR USE IN DIRECT POLYMERIZATION |
摘要 |
A process for producing terephthalic acid of high quality suitable for use in direct polymerization comprising oxidizing a para-dialkylbenzene and/or an oxidized intermediate thereof in the liquid phase with molecular oxygen or a molecular oxygen-containing gas in the presence of an oxidation catalyst containing a heavy metal in a lower aliphatic carboxylic acid solvent, the reaction being carried out in the presence of a specified amount of a phenol. Polyesters prepared from the resulting terephthalic acid have good color. |
申请公布号 |
PT68578(A) |
申请公布日期 |
1978.10.01 |
申请号 |
PT19780068578 |
申请日期 |
1978.09.19 |
申请人 |
MATSUYAMA PETROCHEMICALS INC.;MARUZEN OIL CO., LTD. |
发明人 |
MOTOO SHIGEYASU;HATSUTARO YAMAZAKI;TAKEHIKO KITAMURA |
分类号 |
C07C63/26;B01J27/00;C07B61/00;C07C51/00;C07C51/265;C07C67/00 |
主分类号 |
C07C63/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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