Preparation of high cis-1,4-polybutadiene with reduced gel

Details Preparation of high cis-1,4-polybutadiene with reduced gel Preparation of high cis-1,4-polybutadiene with reduced gel

1994-09-16

1995-05-02

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526151, 5263404, 526335, C08F 414, C08F 470, C08F13606

Patent

active

054120454

ABSTRACT:
There is provided a process for the preparation of a high cis-1,4-polybutadiene with a reduced microgel content wherein a novel catalyst system consisting of (1) a nickel salt of a carboxylic acid, (2) a mixture of triethyl aluminum and an organoaluminum compound having the formula R.sub.3 Al, said mixture having an average composition Et.sub.3-x R.sub.x Al wherein Et is an ethyl group, x is a numeral from 0.1 to 2.9 and R is an alkyl group having 8 to 12 carbon atoms, and (3) a boron trifluoride etherate is used to polymerize 1,3-butadiene in an inert hydrocarbon.

REFERENCES:
patent: 3170907 (1965-02-01), Ueda et al.
patent: 3676411 (1972-07-01), Throckmorton et al.
patent: 3985941 (1976-10-01), Pierson et al.
patent: 4020255 (1977-04-01), Schoneman et al.
patent: 4522988 (1985-06-01), Kang et al.

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