Method for breaking a chain during anionic polymerisation

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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C525S250000, C526S082000, C526S084000

Reexamination Certificate

active

06916885

ABSTRACT:
A process for the preparation of linear polymers or block copolymers of styrene by anionic polymerization comprises carrying out the chain termination with an n-alkyl glycidyl ether or a dialkyl ketone.

REFERENCES:
patent: 3139416 (1964-06-01), Lumb et al.
patent: 4017476 (1977-04-01), Murray et al.
patent: 4486614 (1984-12-01), Donate et al.
patent: 5143990 (1992-09-01), Gibler et al.
Prinziples of Anionic Polymerization, 1996, 267, Hsieh et al.
J. of Polymer Sc., Part A-1, vol. 10, 1187-1194 (1972) Reed.

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