Cooling an alpha-methylstyrene polymerization mass

Details Cooling an alpha-methylstyrene polymerization mass Cooling an alpha-methylstyrene polymerization mass

1978-09-14

1980-11-04

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Removing only nonpolymerized or nonpolymerizable material...

525314, 526 70, C08F 206

Patent

active

042321379

ABSTRACT:
An alpha-methylstyrene polymerization reaction mass is cooled by including therein a component which is readily vaporizable under the conditions of polymerization thereby to remove undesirable or excess heat, thus controlling the reaction temperature to a desired value. In one embodiment a living polymer is produced followed by addition of a second monomer to the living polymer still in solution followed by polymerization onto the living polymer, forming a living block copolymer which is coupled with a linking agent.

REFERENCES:
patent: 2823198 (1958-02-01), Ridgway
patent: 2941989 (1960-06-01), Ford
patent: 3669947 (1972-06-01), Kahn
patent: 3817962 (1974-06-01), Smith
patent: 3825623 (1974-07-01), LaFlair
patent: 3931135 (1976-01-01), Asada
patent: 4058652 (1977-11-01), Smith

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