Process for preparing polybutadiene using catalyst with high act

Details Process for preparing polybutadiene using catalyst with high act Process for preparing polybutadiene using catalyst with high act

1999-11-03

2000-10-24

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526164, 5263404, C08F 452, C08F13606

Patent

active

061369314

ABSTRACT:
This invention relates to a process for preparing polybutadiene with high 1,4-cis content (over 97%) and high conversion (over 90%) in such a manner that 1,3-butadiene is polymerized using an aging catalyst, which has high homogeneity due to its excellent solubility in non-polar solvents, resulting in producing polybutadiene having low gel content and low solution viscosity. The aging catalyst is a mixture of a neodymium compound, an organoaluminum compound and a borontrifluoride complex, which is represented by the formula I or the formula II, in the presence or absence of a small portion of conjugated diene compound:
Formula I is represented by

REFERENCES:
patent: 4699960 (1987-10-01), Gordini et al.
patent: 4699962 (1987-10-01), Hsieh et al.
patent: 4906706 (1990-03-01), Hattori
patent: 5017539 (1991-05-01), Jenkins
patent: 5064910 (1991-11-01), Hattori

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