Synthetic oils

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C - Chemistry, Metallurgy

10

M

253/127, 253/130

C10M 105/06 (2006.01)

Patent

CA 1239140

ABSTRACT OF THE DISCLOSURE Synthetic base oils for functional fluids and greases are provided comprising a mixture of monoalkylated naphthalenes and polyalkylated naphtha- lenes, said naphthalenes represented by the formula: Image wherein the R' groups are independently selected from H and methyl, the mono- alkylated naphthalenes have three R groups which are H and one R group which is a 12-26 carbon alkyl, the polyalkylated naphthalenes have from two to four R groups which are 12-26 carbon alkyl and any remainder R groups H, and the weight ratio of monoalkylated naphthalenes to polyalkylated naphthalenes is from 5:95 to 70:30 when the average alkyl group is C12-C16 and from 5:95 to 99:1 when the average alkyl group is C17-C26. In the preferred mixture, the polyalkylated naphthalenes have a numerical ratio of .alpha./.beta. substitution of from 50/50 to 10/90 when the R' groups are both H.

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