Process for producing conjugated diene polymers

Details Process for producing conjugated diene polymers Process for producing conjugated diene polymers

1977-04-19

1979-05-01

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526182, C08F 446, C08F 456

Patent

active

041525043

ABSTRACT:
A process for producing a conjugated diene polymer, which comprises polymerizing (a) a conjugated diene, (b) two or more conjugated dienes or (c) at least one conjugated diene with a monovinyl aromatic compound, at a temperature of from about 30 to about 100.degree. C in an inert hydrocarbon solvent in the presence of a catalyst composition comprising (i) an alkenyl sodium containing 3 to 8 carbon atoms in the alkenyl moiety and (ii) a sodium alkoxide of a dimethylalkyl carbinol containing 1 to 5 carbon atoms in the alkyl moiety.

REFERENCES:
patent: 3423379 (1969-01-01), Grinninger et al.
patent: 3448093 (1969-06-01), Grinninger et al.
patent: 3607851 (1971-09-01), Forman
patent: 3726832 (1973-04-01), Komatsu et al.
patent: 3897406 (1975-07-01), Halasa et al.
patent: 4097661 (1978-06-01), Komatsu et al.

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