Novel lubricants
AssigneeMobil Oil Corporation
InventorsSuzzy C. Ho, Margaret M. Wu
Life of this patent
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Abstract
Alkylaromatic lubricant products are produced by the reaction of a long chain alkyne such as octyne, decyne or dodecyne over a reduced Group VIB metal oxide catalyst, preferably reduced chromium on silica. The products, which are predominantly n-alkyl substituted, possess excellent thermal and oxidative stability and may be used as lubricant base stocks and viscosity improvers.
Claims21
A process for producing a lubricant base stock composition comprising contacting a long chain 1-alkyne comprising an alkyne portion and an alkyl portion with a solid refractory catalyst comprising a reduced Group VI B metal under aromatization conditions sufficient to effect cyclization and oligomerization of said alkyne, and recovering from the reaction a product comprising a major proportion of a multiple long chain alkyl substituted benzene, the alkyl portions of which correspond substantially to said alkyl portions of said 1-alkyne, having lubricant base stock properties.
A process for producing a substituted aromatic composition, which comprises aromatizing a 1-alkyne comprising an alkyne portion and an alkyl portion with a solid catalyst comprising a reduced chromium oxide catalyst under aromatization conditions at a temperature up to about 250.degree. C. to effect cyclization and oligomerization of the 1-alkyne to form an alkyl substituted aromatic in which the alkyl substituents are derived from the alkyl portions of the 1-alkyne.
A process for producing a substituted aromatic composition, which comprises aromatizing a 1-alkyne in the presence of a solid catalyst comprising a carbon monoxide-reduced chromium oxide catalyst under aromatization conditions to effect cyclization and oligomerization of the 1-alkyne to form an alkyl substituted aromatic.
Dependencies are inferred from the claim text.