Method of lubrication employing synthetic hydrocarbon lubricants

Claim 1

A METHOD OF LUBRICATION EMPLOYING A LUBRICATING MATERIAL PRODUCED BY THE CONDENSATION OF A SUBSTANTIALLY STRIAGHT-CHAIN PARAFFINIC HYDROCARBON, CONTAINING FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS, WITH AN AROMATIC HYDROCARBON, CHARACTERIZED IN THAT THE LUBRICATING MATERIAL IS PREPARED BY A PROCESS COMPRISING THE STEPS OF: (A) PREPARING A SUBSTATIALLY STRAIGHT-CHAIN ALKYLATING AGENT, CONTAINING FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS OF A HALOGENATION PRODUCT PREPARED BY SUBSTANTIALLY MONOHALOGENATING A PARAFFINIC MIXTURE, CONTAINING AT LEAST 90 PERCENT STRAIGHT CHAIN MATERIAL, TO THE EXTEND WHEREBY FROM ABOUT 10 TO ABOUT 40 MOLE PERCENT OF THE PARAFFINS ARE SOL HALOGENATED AND THAT OF THE HALOGENATED PARAFFINS FROM ABOUT 80 TO ABOUT 95 MOLE PERCENT ARE MONOHALOGENATED; (B) ALKYLATING THE ALKYLATING AGENT OF STEP (A) WITH ANN AROMATIC HYDROCARBON TO PREPARE AN ALKYLATION REACTION MASS, (C) SUBJECTING THE ALKYLATION REACTION MASS OF STEP (B) TO DISTILLATION AND RECOVERING THEREFROM A LUBRICATTING MATERIAL COMPRISING A BOTTOMS FRACTION DISTRILLING ABOVE ABOUT 173*C. AT 5,,. HG, SAID BOTTOMS FRACTION BEING CHARACTERIZED FURTHER AS CONTAINING FROM ABOUT 50 PARTS TO ABOUT 95 PARTS (BY VOLUME) DIALKYL AROMATIC HYDROCARBONS, FROM ABOUT 5 TO ABOUT 50 PART (BY VOLUME) DIARYLALKANES, HAVING A VISCOSITY INDEX OF AT LEAST 80, A VISCOSITY AT -40*F. OF NOT MORE THAN 35,000 CENTISTOKES, A POURPOINT OF AT LEAST -50*F., AND A FLASH POINT OF AT LEAST 400*F.

Claim 2

A METHOD OF LUBRICATION EMPLOYING A LUBRICATING MATERIAL PRODUCED BY THE CONDENSATION OF A SUBSTANTIALLY STRIAGHT-CHAIN PARAFFINIC HYDROCARBON, CONTAINING FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS, WITH AN AROMATIC HYDROCARBON, CHARACTERIZED IN THAT THE LUBRICATING MATERIAL IS PREPARED BY A PROCESS COMPRISING THE STEPS OF: (A) PREPARING A SUBSTATIALLY STRAIGHT-CHAIN ALKYLATING AGENT, CONTAINING FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS OF A HALOGENATION PRODUCT PREPARED BY SUBSTANTIALLY MONOHALOGENATING A PARAFFINIC MIXTURE, CONTAINING AT LEAST 90 PERCENT STRAIGHT CHAIN MATERIAL, TO THE EXTEND WHEREBY FROM ABOUT 10 TO ABOUT 40 MOLE PERCENT OF THE PARAFFINS ARE SOL HALOGENATED AND THAT OF THE HALOGENATED PARAFFINS FROM ABOUT 80 TO ABOUT 95 MOLE PERCENT ARE MONOHALOGENATED; (B) ALKYLATING THE ALKYLATING AGENT OF STEP (A) WITH ANN AROMATIC HYDROCARBON TO PREPARE AN ALKYLATION REACTION MASS, (C) SUBJECTING THE ALKYLATION REACTION MASS OF STEP (B) TO DISTILLATION AND RECOVERING THEREFROM A LUBRICATTING MATERIAL COMPRISING A BOTTOMS FRACTION DISTRILLING ABOVE ABOUT 173*C. AT 5,,. HG, SAID BOTTOMS FRACTION BEING CHARACTERIZED FURTHER AS CONTAINING FROM ABOUT 50 PARTS TO ABOUT 95 PARTS (BY VOLUME) DIALKYL AROMATIC HYDROCARBONS, FROM ABOUT 5 TO ABOUT 50 PART (BY VOLUME) DIARYLALKANES, HAVING A VISCOSITY INDEX OF AT LEAST 80, A VISCOSITY AT -40*F. OF NOT MORE THAN 35,000 CENTISTOKES, A POURPOINT OF AT LEAST -50*F., AND A FLASH POINT OF AT LEAST 400*F.