发明名称 |
PROCESS FOR PRODUCING TEREPHTHALIC ACID |
摘要 |
PROCESS FOR PRODUCING TEREPHTHALIC ACID Terephthalic acid having a purity of 99% or more can be produced in a yield of 95% by mole or more by oxidizing p-tolualdehyde or a mixture of p-tolualdehyde and p-toluic acid with molecular oxygen in a solvent in the presence of a cobalt salt catalyst under the conditions that (1) a Co/solvent ratio is 0.05 to 0.70% by weight and (2) a toluic acid/Co ratio is 0.1 to 3.0 moles/gram atom, without using either a promoter or an oxidation accelerator. |
申请公布号 |
CA1051024(A) |
申请公布日期 |
1979.03.20 |
申请号 |
CA19760260275 |
申请日期 |
1976.08.31 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
SUZUKI, TAKASHI;TATEISHI, AKIRA;NAITO, SUSUMU |
分类号 |
C07C63/26;C07C51/00;C07C51/265;C07C67/00 |
主分类号 |
C07C63/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|