Catalytic composition

Details Catalytic composition Catalytic composition

1976-02-23

1978-05-30

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252431R, 252431C, 252431N, 252428, B01J 3112, B01J 3102

Patent

active

040922685

ABSTRACT:
Polymers of conjugated dienes and copolymers of conjugated dienes with vinyl aromatic compounds or with other conjugated dienes having a high content of trans-1,4 linkages and a low content of 1,2 or 3,4 linkages and an elastomeric character are prepared by use of a catalytic composition which comprises (a ) an organo-lithium initiator and (b) a cocatalyst system comprising a compound of barium or strontium and an organometallic compound of a metal of Group IIB or IIIA of the Mendeleev periodic table of elements.

REFERENCES:
patent: 3294768 (1966-12-01), Wofford
patent: 3542751 (1970-11-01), Throckmorton
patent: 3624000 (1971-11-01), Throckmorton
patent: 3629213 (1971-12-01), Onishi et al.
patent: 3664989 (1972-05-01), Petrov et al.
patent: 3665062 (1972-05-01), Onishi et al.
patent: 3725301 (1973-04-01), Mueller et al.
patent: 3734900 (1973-05-01), Throckmorton
patent: 3769270 (1973-10-01), Saltman et al.

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