| 摘要 |
Petroleum distillates which pass the B.S.I. copper strip corrosion test are prepared from distillates which fail to do so after hydrocatalytic desulphurization and redistillation, by adding a small proportion of a phenolic compound. Compounds referred to are tar acids from the distillation of coaltar, tricresol and sterically hindered phenols such as 2, 4 dimethyl-b -tertiary-butylphenol. Distillates referred to are solvent-naphthas.
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