Cyclic polymerization process

Details Cyclic polymerization process Cyclic polymerization process

1974-09-18

1976-05-18

Levin, Stanford M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 96HY, 526 20, 526 25, 526 70, 526 81, 526 82, 526173, 526210, 526 90, 528500, C08F 804, C08F29704

Patent

active

039579140

ABSTRACT:
A cyclic process is provided for the polymerization and hydrogenation of certain polymers wherein the monomer is anionically polymerized in solution, the living polymers then being terminated by the use of a proton donor, after which the polymer is subjected to catalytic hydrogenation wherein the catalyst is optionally activated with certain polar compounds after which the polymer is coagulated and heated to remove any residual terminator and activator and the solvent is fractionally distilled to recover and recycle the solvent without contamination from the substantially higher boiling terminator and optional activator.

REFERENCES:
patent: 2975160 (1961-03-01), Zelinski
patent: 3030346 (1962-04-01), Cooper
patent: 3119800 (1964-01-01), Moss et al.
patent: 3287333 (1966-11-01), Zelinski
patent: 3356763 (1967-12-01), Dollinger et al.
patent: 3452119 (1969-06-01), Hinton
patent: 3598886 (1971-08-01), Hoeg et al.
patent: 3644588 (1972-02-01), Hassell
patent: 3753936 (1973-08-01), Marrs

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