Synthetic lubricating oils from thermal cracking or polymers hav

Details Synthetic lubricating oils from thermal cracking or polymers hav Synthetic lubricating oils from thermal cracking or polymers hav

1974-03-12

1976-05-18

Levine, Herbert

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252 59, 260 96D, 26068315D, 2606839, C07C 504, C10M 312

Patent

active

039578984

ABSTRACT:
Synthetic lubricating oil having a high viscosity index, very low pour point, low viscosity at 0.degree.F, high thermal stability, high resistance to depolymerization, high flash point and very low carbon residue, is prepared by subjecting polymeric material of very high viscosity boiling above 175.degree.C, and obtained through polymerization of normal alpha-olefines having the general formula R-CH = CH.sub.2, wherein R is an alkyl radical containing from 2 to 16 carbon atoms, in the presence of a TiCl.sub.4 /polyiminoalane catalyst, in a substantially inert atmosphere which may contain hydrogen up to a manometer pressure of 1 kg/cm.sup.2, to thermal cracking at atmospheric pressure and in the temperature range of 300.degree.C to 420.degree.C at a contact time in the range of 5 minutes to 4 hours, and then distilling product so obtained under vacuum to a temperature which corresponds to a distillation temperature of 400.degree.C at atmospheric pressure, and finally subjecting the residue with a boiling point higher than 400.degree.C to catalytic hydrogenation.

REFERENCES:
patent: 2239501 (1941-04-01), Frolich et al.
patent: 3149178 (1964-09-01), Hamilton et al.
patent: 3676521 (1969-09-01), Stearns et al.
patent: 3682823 (1972-08-01), Smith et al.
patent: 3798284 (1974-03-01), Tesei et al.
patent: 3845157 (1974-10-01), Woo
patent: 3849510 (1974-11-01), Maspero et al.
"Industrial Engineering Chemistry, Product Research and Development," Vol. 8, No. 3, Sept. 1969, pp. (299-303) Gates et al.

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