Process for producing high-vacuum oils

Details Process for producing high-vacuum oils Process for producing high-vacuum oils

1980-09-18

1983-01-11

Hines, Robert V.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585459, C07C 266, C07C 270

Patent

active

043683436

ABSTRACT:
A process for producing high-vacuum oils comprises alkylation of condensed and non-condensed aromatic hydrocarbons by means of secondary normal alkylchlorides containing 8 to 12 carbon atoms or mixtures of said chlorides. The alkylchlorides are employed in a molar ratio to the condensed or non-condensed aromatic hydrocarbons of from 2.5:1 to 5:1. The alkylation reaction is conducted at a temperature within the range of from 20.degree. to 100.degree. C. in the presence of from 2 to 15 mol. % of aluminum chloride based on the amount of the employed alkylchlorides until the evolution of hydrogen chloride ceases, whereafter the catalyst is separated from the resulting alkylate. The alkylate is subjected to a vacuum fractionation and the desired fraction is collected which has a boiling temperature within the range of from 220.degree. to 250.degree. C./0.2-0.3 mm Hg, while the preceding fraction is recycled to alkylation stage.

REFERENCES:
patent: 1815022 (1931-07-01), Davis
patent: 1878262 (1932-09-01), Chapell
patent: 2837724 (1958-06-01), Cook
patent: 3444255 (1969-05-01), Hiller et al.
Adams et al., "Organic Reactions", vol. III, pp. 53-57, (1956).

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