Process for producing conjugated diene polymer

Details Process for producing conjugated diene polymer Process for producing conjugated diene polymer

1982-03-25

1984-05-01

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F13608, C08F23608, C08F 446, C08F 450

Patent

active

044462905

ABSTRACT:
Conjugated diene polymers and copolymers having a high ratio of a trans-1,4 structure content to a cis-1,4 structure content in the diene moiety can be advantageously solution polymerized by using a novel catalyst complex consisting essentially of the following components (a) and (b) or (a), (b), and (c): (a) an organosodium compound, metallic sodium or a sodium amide compound, or a mixture of at least one thereof with an organic compound of sodium other than the sodium amide compound; (b) an organic or organometallic compound of barium, strontium, or calcium; (c) an organometallic compound of an electron deficient metal selected from lithium, beryllium, magnesium, zinc, cadmium, boron, aluminum, gallium, or indium.

REFERENCES:
patent: 3629213 (1971-12-01), Onishi et al.
patent: 3846385 (1974-11-01), Hargis et al.
patent: 4080492 (1978-03-01), de Zarauz
patent: 4129705 (1978-12-01), de Zarauz
patent: 4136244 (1979-01-01), Massoubre

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