2762. REIFF, O. M., ANDRESS, H. J., JR., AND KOZACIK, A. P. (Socony-Vacuum Oil Co., Inc.). Synthetic Lubricants. United States Patent 2,500,203, Mar. 14, 1950; appl. filed May 11, 1949, Serial No. 92,744; 17 claims (Cl. 260-666).

PATENTS

2762. REIFF, O. M., ANDRESS, H. J., JR., AND KOZACIK, A. P. (Socony-Vacuum Oil Co., Inc.). Synthetic Lubricants. United States Patent 2,500,203, Mar. 14, 1950; appl. filed May 11, 1949, Serial No. 92,744; 17 claims (Cl. 260-666).

Preparation is given of a viscous oil with low pour point and cloud point. A mono-olefin, 8-18 C atoms per molecule, and a vinyl aromatic compound are heated with a catalyst consisting of silica and an amphoteric metal oxide until condensation. The temperature is 300°-600° F. The charge is 1-2 molar proportions of mono-olefin per molecule vinyl aromatic compound. The process may be applied to mixtures from cracking of paraffin waxes and paraffin products from the Fischer-Tropsch synthesis. 4 United States patents cited.

REISINGER, —. See abs. 3901, 3902, 3904, 3905.