Process for the preparation of styrene derivatives extended at t

Details Process for the preparation of styrene derivatives extended at t Process for the preparation of styrene derivatives extended at t

1993-06-29

1994-08-23

Pal, Asok

Chemistry of hydrocarbon compounds

Apparatus considerations

Using recited apparatus structure

585452, 585520, 585527, 502337, C07C 202, C07C 246, C07C 264, C07C 266

Patent

active

RE0347060

ABSTRACT:
The title compounds can be prepared by reaction of a styrene derivative with ethylene in the presence of a nickel catalyst which carries a phosphorus-oxygen chelate ligand, at a temperature of 20.degree. to 160.degree. C. and an ethylene pressure of 1 to 200 bar. Styrene derivatives extended with ethylene, of the formula ##STR1## in which R.sup.19 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, vinyl or chlorine and R.sup.38 denotes C.sub.1 -C.sub.4 -alkenyl, C.sub.2 -C.sub.7 -acyl, flourine, chlorine or bromine and
m assumes values of 4-104,
with the exception of compounds wherein R.sup.19 denotes hydrogen and R.sup.38 denotes i-butyl or benzoyl, and m assumes the value 4, are new.

REFERENCES:
patent: 4620021 (1986-10-01), Starzewski
patent: 4642405 (1987-02-01), Kaufhold
patent: 4709109 (1987-11-01), Sperling et al.
patent: 4894383 (1990-01-01), Holmwood et al.
patent: 4999440 (1991-03-01), Holmwood et al.
patent: 5026675 (1991-06-01), Braca et al.
Journal of the American Chemical Society, vol. 100, No. 7, Mar. 29, 1978, pp. 2181-2190.
High Polymers, vol. 18, John Wiley & Sons, 1964, pp. 1 et seq. Chapter 1, Theory of Copolymerization pp. 5-7 and 27 et seq.

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