发明名称 |
Process for the purification of terephthalic acid |
摘要 |
This invention relates to catalysis for example, the catalytic hydrogenation of impurities in terephthalic acid to yield terephthalic acid of sufficient purity for use in the production of polyester fibres. In more detail, the invention comprises the step of treating a solution of terephthalic acid with hydrogen gas in the presence of a catalyst comprising two or more of the metals platinum, palladium, rhodium, ruthenium, osmium and irridium.
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申请公布号 |
US4260817(A) |
申请公布日期 |
1981.04.07 |
申请号 |
US19800952140 |
申请日期 |
1980.10.17 |
申请人 |
JOHNSON, MATTHEY & CO., LIMITED |
发明人 |
THOMPSON, DAVID T.;BIRD, ALFRED J.;PEARSON, EDWARD J. |
分类号 |
C07C63/26;B01J23/00;C07C51/00;C07C51/487;C07C67/00;(IPC1-7):C07C51/42 |
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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