Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1972-06-12
1976-04-06
Holler, Alan
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260 949E, 260 949GC, 260880B, 260886, C08L 2300, C08L 434, C08L 806, C08L25500
Patent
active
039490181
ABSTRACT:
A process for the preparation of polymers containing peroxide end-groups, in which one or more monomers, particularly alpha-olefins, are polymerized by means of a co-ordination catalyst in the presence of an adjuvant with the formula M(X)p, where M is boron or a metal in column IIb of the Periodic Table of Elements, p is the valency of M, and X is at least one monovalent organic radical, a hydrogen atom or a halogen, the polymer obtained is treated with a peroxidizing agent, without being de-activated, and the resulting polymer containing peroxide groups is collected.
Polymers with peroxide end-groups obtained by this process, particularly olefins with peroxide end-groups, can be used to initiate polymerization of vinylic monomers, and are accordingly useful in the synthesis of block copolymers, in which one part is formed from the polymeric part of the macromolecular peroxide and the other part is derived from the vinylic monomer or monomers polymerized by means of this peroxide.
REFERENCES:
patent: 2971925 (1961-02-01), Winkler et al.
patent: 3458598 (1969-07-01), Craven
patent: 3462403 (1969-08-01), Pendleton
patent: 3652724 (1972-03-01), Shimomura et al.
patent: 3739042 (1973-06-01), Chu et al.
patent: 3800007 (1974-03-01), Bafford
Agouri Elias
Laputte Robert
Rideau Jacques
Aquitaine Total Organico
Blodgett Gerry A.
Blodgett Norman S.
Holler Alan
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