发明名称 |
Reactive extrusion process with partial condensor and reflux |
摘要 |
An esterification or transesterification process comprises the steps of reacting a first polymer with a first alcohol in a reactive extruder to produce a second polymer, while also producing a second alcohol as a by-product. The second alcohol has a lower boiling point than the first alcohol, preferably at least about 100° C. lower. A gas stream is vented from the extruder apparatus that comprises both the first alcohol and the second alcohol. At least part of the first alcohol is condensed from the gas stream, thereby forming a liquid stream, which is then fed back into the reactive extruder. The condensed first alcohol then continues to further the extent of the reaction in the extruder producing the second polymer. |
申请公布号 |
US2002072572(A1) |
申请公布日期 |
2002.06.13 |
申请号 |
US20000733652 |
申请日期 |
2000.12.08 |
申请人 |
RUSSELL KENNETH W.;WARR SHANE A.;CAI GANGFENG;HUFF LAWRENCE E.;CHING TA YEN |
发明人 |
RUSSELL KENNETH W.;WARR SHANE A.;CAI GANGFENG;HUFF LAWRENCE E.;CHING TA YEN |
分类号 |
C08F8/14;(IPC1-7):C08F120/02 |
主分类号 |
C08F8/14 |
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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