Abstract:
THIS DISCLOSURE CONCERNS THE REPARATION OF A HYDROCARBON COMPOSITION CONTAINING A MAJOR AMOUNT OF ALKYL AROMATIC COMPOUNDS HAVING TWO LONG-CHAIN ALKYL GROUPS AND A MINOR AMOUNT OF ALKYL-SUBSTITUTED TETRAHYDRONAPHTHALENES BY THE DISPORTIONATION OF AROMATIC COMPOUNDS HAVING ONE LONG-CHAIN ALKYL GROUP USING ALUMINUM CHLORIDE OR ALUMINUM BROMIDE AS THE CATALYST. THE TERM "LONG-CHAIN REFERS TO LINEAR ALKYL GROUPS CONTAINING FROM ABOUT 8 TO ABOUT 18, PREFERABLY FROM ABOUT 10 TO ABOUT 16, CARBON ATOMS. THE HYDROCARBON COMPOSITION (I.E. DISPROPORTIONATED PRODUCT) IS USEFUL AS A SULFONATION FEEDSTOCK AND AS A LUBRICANT.
Abstract:
This disclosure concerns a process for preparing a synthetic hydrocarbon lubricant composition, said composition consisting essentially of a major amount of di-long-chain alkyl monocyclic aromatic hydrocarbons and a minor amount of trialkyl-substituted tetrahydronaphthalenes. The process comprises (a) alkylating an admixture of a major amount of mono-long chain alkyl monocyclic aromatic hydrocarbons and a minor amount of alkyl-substituted tetrahydronaphthalenes with linear mono-olefins containing six to 18 carbon atoms, using aluminum chloride or aluminum bromide as the catalyst, under severe reaction conditions and (b) recovering the desired product. In both the mono-long-chain alkyl aromatic and di-long-chain alkyl aromatic hydrocarbons, the long-chain alkyl groups are linear and contain six to 18 carbon atoms while the aromatic moiety is phenyl, tolyl, or xylyl.
Abstract:
HYDROCARBON COMPOSITION CONTAINING AT LEAST 20 VOLUME PERCENT POLYALKYL-SUBSTITUTED TETRAHYDRONAPHTHALENES AND FROM 25 TO 60 VOLUME PERCENT DI-N-C10-C15-ALKARYLS, EACH OF SAID TETRAHYDRONAPHTHALENES AND SAID DI-N-C10-C15-ALKARYLS CONTAINING FROM 26 TO 36 CARBON ATOMS. PROCESS FOR PREPARING SAID HYDROCARBON COMPOSITION, WHEREIN THE PROCESS COMPRISES (1) CONTACTING AN ADMIXTURE OF MONON-C10-C15-ALKARYLS AND ALKYL-SUBSTITUTED TETRAHYDRONAPHTHALENES WITH A FRIEDEL-CRAFTS CATALYST, AND (2) FRACTIONALLY DISTILLING THE REACTION MASS TO RECOVER THE DESIRED HYDROCARBON COMPOSITION. THE HYDROCARBON COMPOSITION IS SUITABLE FOR USE BOTH AS A FEEDSTOCK FOR PREPARING OIL-SOLUBLE SLUFONIC ACIDS AND AS A LUBRICANT, PARTICULARLY A LUBRICANT FOR LOW-TEMPERATURE AMBIENT CONDITIONS.