Title:
【発明の名称】アニオン開始剤を使用するオレフィン―含有モノマーの重合
Document Type and Number:
Japanese Patent JPH05504164
Kind Code:
A
Abstract:
Process for anionically polymerizing 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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Inventors:
Sheepard, nail
Stuywart, Malcolm Jiyoung
Stuywart, Malcolm Jiyoung
Application Number:
JP50478191A
Publication Date:
July 01, 1993
Filing Date:
February 06, 1991
Export Citation:
Assignee:
United Kingdom
International Classes:
C07F7/18; C08F4/42; C08F4/46; C08F4/72; C08F8/00; C08F36/04; (IPC1-7): C07F7/18; C08F4/46; C08F4/72; C08F8/00; C08F36/04
Attorney, Agent or Firm:
Yoshio Kawaguchi