Method for preparing thermoelastomeric three-block copolymers

Details Method for preparing thermoelastomeric three-block copolymers Method for preparing thermoelastomeric three-block copolymers

1981-04-06

1982-08-31

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...

525299, C08F29704

Patent

active

043473407

ABSTRACT:
A process is disclosed for producing thermoelastomeric 3-block copolymers of the ABA (or ABC) type, the end blocks being a plastomeric nature and the intermediate block of an elastomeric nature, by cationic polymerization employing a composite catalytic system comprised of Aluminium alkyl, possibly with a halogen substituent, and of a halogen or a halogen-substituted hydrocarbon radical.

REFERENCES:
patent: 3123592 (1964-03-01), Gasparoni
patent: 3739042 (1973-06-01), Chu
patent: 3994993 (1976-11-01), Kennedy
patent: 4001350 (1977-01-01), Fahrbach
patent: 4038474 (1976-07-01), Kudo
patent: 4039733 (1977-08-01), Kudo
patent: 4154916 (1979-05-01), Wagensommer
patent: 4262095 (1981-04-01), Giusti
patent: 4269955 (1981-05-01), Wagensommer

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