发明名称 |
Process for the continuous production of functionalized polymers |
摘要 |
A continuous process for functionalizing polymers is disclosed, wherein (A) a liquid comprising the polymer and a gas comprising a functionalizing agent are continuously introduced into a dispersing zone operated in laminar flow with high intensity mixing of the liquid and the gas under functionalization conditions, wherein the mixing is conducted for a period of the dispersing zone residence time at a shear rate effective to form a stable gas-liquid dispersion in which the gas is substantially dissolved or dispersed in the liquid for functionalization, and wherein the shear rate is less than about 5 s-1 for no more than about 30% of the residence time; (B) the gas-liquid dispersion is continuously passed to a blending zone operated in laminar flow with low intensity mixing under functionalization conditions, wherein the mixing is conducted at a shear rate effective to further dissolve the gas into the liquid for further functionalization; and (C) continuously recovering functionalized polymer. The process can be used to carbonylate unsaturated polymers, and is particularly useful in reacting unsaturated polymers with carbon monoxide in the presence of a catalyst and a co-reactant selected from water, H2S, alcohols, and thiols to produce functionalized polymer containing carboxylic (thio)acid or carboxylic (thio)ester functional groups.
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申请公布号 |
US6037445(A) |
申请公布日期 |
2000.03.14 |
申请号 |
US19970000996 |
申请日期 |
1997.12.30 |
申请人 |
EXXON CHEMICAL PATENTS, INC.;KOCH-GLITSCH, INC. |
发明人 |
DANKWORTH, DAVID C.;MEYER, CHRIS F.;ECKSTROM, WILLIAM B.;HEMRAJANI, RAMESH R.;REA, SALVATORE;STANAT, JON E. |
分类号 |
B01J10/00;B01J19/24;C08F8/00;(IPC1-7):C08F8/00;C08F6/00;C08G67/00;C08J3/00;C07C67/00 |
主分类号 |
B01J10/00 |
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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