Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-03-08
1979-04-10
Davis, C.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
252 59, 260671G, C07C 352
Patent
active
041488342
ABSTRACT:
This disclosure concerns an improved process for preparing a synthetic hydrocarbon lubricant composition, said composition consisting essentially of di-long-chain alkyl-substituted aromatic hydrocarbons. The improved process is directed to a two-step alkylation process, using linear mono-olefins as the alkylating agent, and in which the first alkylation is conducted using HF as the catalyst, wherein the improvement comprises using aluminum chloride or aluminum bromide as the catalyst for the second alkylation step. Use of aluminum chloride or aluminum bromide, instead of HF, in the second alkylation step results in a product having better low temperature properties.
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patent: 2525778 (1950-10-01), DE Benneville et al.
patent: 2626967 (1953-01-01), Darragh et al.
patent: 2871254 (1959-01-01), Hoog et al.
patent: 3173965 (1965-03-01), Pappas et al.
Kennedy Carl D.
Nicks Gene E.
Continental Oil Company
Davis C.
Rutherford, Jr. Bayless E.
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