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US 4,721,823 AGranted
Lubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufacture
AssigneePennzoil Products Company
InventorsClifford G. Venier, Edward W. Casserly
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Abstract
Hydrocarbyl substituted cyclopentadienes, cyclopentenes, and cyclopentanes are sythetic lubricating compositions. The preferred structures contain 1 to 6 alkyl groups which have 4 to 36 carbon atoms and may have different and varying carbon chain structures. The cyclopentenes and cyclopentanes are prepared by hydrogenation from the corresponding cyclopentadiene intermediates. The cyclopentadienes are prepared by reaction with hydrocarbylating agents or alcohols. Mixtures are also disclosed.
Claims7
A cyclopentane of the following formula:
- ##STR24## wherein each R.sub.1 is individually and independently selected from alkyl groups of from 1 to 4 carbon atoms, each R.sub.2 is individually and independently selected from C.sub.8 -C.sub.36 straight or branch chained hydrocarbyl groups, z is 0, 1, 2 or 3, and y is an integer ranging from 3 to 6.
A cyclopentane of the following formula:
- ##STR25## wherein each R.sub.1 is individually and independently selected from alkyl groups of from 1 to 4 carbon atoms, each R.sub.2 is individually and independently selected from C.sub.8 -C.sub.36 straight or branch chained alkyl groups, z is 0, 1, 2 or 3, and y is an integer ranging from 2 to 6, providing that when at least two of the R.sub.2 substituents are alkyl groups of from 4 to 10 carbon atoms, then y must be at least 3, and y+z cannot be greater than 6.
Dependencies are inferred from the claim text.