发明名称 |
POLYMERISATION OF OLEFINIC-CONTAINING MONOMERS EMPLOYING ANIONIC INITIATORS |
摘要 |
Process for anionically polymerising a conjugated 1,3-diene monomer consists of contacting the monomer in an inert hydrocarbon solvent with a monofunctional silyl ether initiator of general formula R1R2R3Si-O-A-Li where R1 to R3 are independently selected from monovalent organic substituent groups and A is a short chain hydrocarbon bridging group, to yield a polydiene having a molecular weight of typically 1,000 - 10,000, a high 1. 4 content of typically 90 % and a low polydispensity of typically 1.15. The reactive ends of the living polymer chains may be terminated with a reactive group such as hydroxyl by treating the polymer with ethylene oxide. Subsequent removal of the polymer's relatively unreactive silyl end groups by reaction with tetra-n-butylammonium fluoride produces a difunctional, chain- extendable, hydroxy-terminated polydiene useful as a rubbery binder prepolymer.
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申请公布号 |
CA2074722(A1) |
申请公布日期 |
1991.08.09 |
申请号 |
CA19912074722 |
申请日期 |
1991.02.06 |
申请人 |
SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND (THE) |
发明人 |
SHEPHERD, NEIL;STEWART, MALCOLM J. |
分类号 |
C07F7/18;C08F4/42;C08F4/46;C08F4/72;C08F8/00;C08F36/04;(IPC1-7):C07F7/18;C08G77/20 |
主分类号 |
C07F7/18 |
代理机构 |
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