Process for preparation of diene-styrene-.alpha.-methylstyrene b

Details Process for preparation of diene-styrene-.alpha.-methylstyrene b Process for preparation of diene-styrene-.alpha.-methylstyrene b

1981-08-28

1984-01-24

Michl, Paul R.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08F29704

Patent

active

044278373

ABSTRACT:
Diene-styrene-.alpha.-methylstyrene block polymers are prepared by polymerization in excess .alpha.-methylstyrene with a lithium initiator wherein styrene-.alpha.-methylstyrene block is polymerized at a temperature from about 20.degree. centigrade to about 160.degree. centigrade with the ratio of styrene to .alpha.-methylstyrene being from about 50 to 1 to about 1 to 50.

REFERENCES:
patent: 3265765 (1966-08-01), Holden
patent: 3925512 (1975-12-01), Roest et al.
patent: 4089913 (1978-05-01), Miki et al.
patent: 4201848 (1980-05-01), Kotani et al.
patent: 4232137 (1980-11-01), Irvin et al.

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