Process for producing a mixture of isopropylnaphthalenes

Details Process for producing a mixture of isopropylnaphthalenes Process for producing a mixture of isopropylnaphthalenes

1975-05-28

1976-06-08

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260671C, C07C 354

Patent

active

039623653

ABSTRACT:
A mixture of monosubstituted and polysubstituted isopropylnaphthalenes is produced by treating naphthalene with concentrated sulfuric acid and propylene. Concentrated sulfuric acid is added to naphthalene in an amount of at least 3% based on the amount of naphthalene used, and at a temperature in the range of 150.degree. - 200.degree.C to form a mixture containing naphthalene sulfonic acids and naphthalene. Propylene is added to this mixture at a temperature of 150.degree. - 220.degree.C. The propylated mixture is neutralized with caustic and distilled to remove naphthalene and to produce a mixture of isopropylnaphthalenes.

REFERENCES:
patent: 2014766 (1935-09-01), Isham
patent: 2887519 (1959-05-01), Hervert
patent: 2920121 (1960-01-01), Sisco et al.
patent: 2955144 (1960-10-01), Sisco et al.

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