| 发明名称 |
A method for the reduction of impurities in polyester resins. |
| 摘要 |
<p>A method for the reduction of impurities, particularly acetaldehyde, present in polymer materials based on polyethyleneterephthalate and polyethyleneterephthalate copolymers comprises the removal of the impurities with the use of supercritical carbon dioxide.</p> |
| 申请公布号 |
EP0300981(A1) |
申请公布日期 |
1989.01.25 |
| 申请号 |
EP19880830311 |
申请日期 |
1988.07.19 |
| 申请人 |
COBARR S.P.A. |
发明人 |
AL GHATTA, HUSSAIN ALI-KASHIF |
| 分类号 |
C08G63/90;(IPC1-7):C08G63/74;B01D11/02 |
主分类号 |
C08G63/90 |
| 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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