Polybutadiene composition and process for producing same

Details Polybutadiene composition and process for producing same Polybutadiene composition and process for producing same

1994-02-08

1995-11-21

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 78, 526 81, 526 86, 526 93, 526 94, 526136, 526138, 526139, 526140, 526141, 526142, 526335, 525232, 525236, 428402, C08F 3606, C08F 218

Patent

active

054688221

ABSTRACT:
A 1,2-polybutadiene composition having an excellent reinforcing effect for rubber and synthetic resin materials including at least two polybutadiene components different in melting point from each other and each having, as a main structure, a 1,2-polybutadiene structure, produced by polymerizing a 1,3-butadiene-containing monomer in a water-containing polymerization system in the presence of a catalyst comprising a transition metal compound, an organic compound of one of the Group I to III metals, and one of carbon disulfide, phenyl isothiocyanate, and xanthic acid compounds, while adding a melting point-regulating agent comprising at least one of ketones, aldehydes, alcohols, esters, nitriles, sulfoxides, amides, and phosphoric acid esters in one or two or more separate adding operations or a continuous adding operation.

REFERENCES:
patent: 4429085 (1984-01-01), Henderson et al.
patent: 4506031 (1985-03-01), Henderson et al.
patent: 4645809 (1987-02-01), Bell
patent: 4742137 (1988-05-01), Ono et al.
patent: 4790365 (1988-12-01), Sandstrom et al.
patent: 5011896 (1991-04-01), Bell et al.
Hackh's Chemical Dictionary (4th ed.) McGraw-Hill, Inc., N.Y., 727 (1969).

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