发明名称 |
PROCESS FOR REMOVING TITANIUM OXIDE OR RED OXIDE FROM ETHYLENE GLYCOL SOLVOLYSIS PRODUCT OF A POLYESTER CONTAINING TITANIUM OXIDE OR REDOXIDE |
摘要 |
A process for efficiently removing titanium oxide or red oxide from an ethylene glycol solvolysis product of a polyester containing titanium oxide or red oxide. The process comprises the steps of: (1) mixing at least one calcium compound selected from the group consisting of calcium oxide, calcium carbonate and calcium hydroxide with a polyester decomposition product containing titanium oxide which is an ethylene glycol solvolysis product of a polyester containing titanium oxide to agglomerate titanium oxide contained in the polyester decomposition product, or mixing titanium oxide with a polyester decomposition product containing red oxide which is an ethylene glycol solvolysis product of a polyester containing red oxide to agglomerate red oxide contained in the polyester decomposition product; and (2) subjecting the agglomerates to solid-liquid separation to remove titanium oxide or red oxide from the polyester decomposition product.
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申请公布号 |
CA2349172(C) |
申请公布日期 |
2007.07.17 |
申请号 |
CA20002349172 |
申请日期 |
2000.09.05 |
申请人 |
AIES CO., LTD. |
发明人 |
SATO, KIKUCHI;INADA, SHUJI |
分类号 |
C07C67/56;C07C67/28;C07C67/48;C07C69/82 |
主分类号 |
C07C67/56 |
代理机构 |
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主权项 |
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地址 |
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