Preparation of butene polymers using an ionic liquid

Details Preparation of butene polymers using an ionic liquid Preparation of butene polymers using an ionic liquid

1993-02-04

1994-04-19

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526204, 526237, 526290, 5263486, 5263487, C08F 452, C08F 412, C08F 1008

Patent

active

053046153

ABSTRACT:
This invention relates to a process for the polymerization of an olefinic feedstock comprising one or more of butene-1, butene-2 and iso-butene by bringing the feedstock into contact with an ionic liquid comprising a) an aluminium compound of the formula R.sub.n AlX.sub.3-n wherein R is a C1-C6 alkyl radical, X is a halogen atom and n is 0, 1 or 2, and b) a substituted imidazolium and/or a substituted pyridinium halide such that the melting point of the ionic liquid is below the reaction temperature in the range from -50.degree. C. to +100.degree. C. The polymers so produced can be used to react with alkenyl succinimides which are useful fuel and lubricating oil additives.

REFERENCES:
J. Chem. Soc., Chem. Communications, "Catalytic Dimerization of Alkenes by Nickel Complexes in Organochloroaluminate Molten Salts", 1990 pp. 1715-1716.
J. Org. Chem., "Friedel-Crafts Reactions in Ambient-Temperature Molten Salts", 1986, 480-483.

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