发明名称 |
CONCURRENT EPOXIDATION AND CATALYST RESIDUE EXTRACTION |
摘要 |
A process for the concurrent epoxidation of, and catalyst residue extraction from, anionically polymerized diene-containing polymers which have been hydrogenated using a Group VIII metal catalyst, said process comprising: (a) introducing a catalyst residue-containing diene-containing polymer cement into a reactor; (b) heating the polymer cement to a temperature of from 25 to 65 ~C; (c) contacting the polymer cement with a caustic solution; (d) contacting the polymer cement with a peracid solution; (e) mixing the polymer, caustic, and acid at from 25 to 65 ~C for from 1/2 to 3 hours; (f) optionally adding sufficient caustic solution to neutralize excess acid while continuing the mixing; (g) adding sufficient water such that the aqueous/organic phase weight ratio is from 0.2:1 to 1:1 while continuing the mixing; (h) allowing the phases to settle for from 5 to 90 minutes; (i) removing the aqueous phase from the reactor; (j) optionally repeating steps (g), (h), and (i) until catalyst residue contents are less than 10 ppm; and (k) removing the polymer cement from the reactor and removing the solvent to recover the epoxidized polymer.
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申请公布号 |
CA2220956(A1) |
申请公布日期 |
1996.11.21 |
申请号 |
CA19962220956 |
申请日期 |
1996.05.15 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
VEITH, CARY ALAN;STEVENS, CRAIG ALFRED;ERICKSON, JAMES ROBERT;RAO, BHASKAR PEECHERA |
分类号 |
C08C2/04;C08C19/06;C08F8/08;(IPC1-7):C08F8/08;C08F6/08 |
主分类号 |
C08C2/04 |
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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