Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1980-08-15
1981-10-27
Garvin, Patrick
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
526124, C08F 410
Patent
active
042972400
ABSTRACT:
A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can product polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
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Aggarwal Sundar L.
Bingham Robert E.
Durst Richard R.
Fabris Hubert J.
Hargis Ivan G.
Garvin Patrick
The General Tire & Rubber Company
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