Biodegradable, non-toxic lubricant composition processes of making it and methods for its use

Abstract

A biodegradable, non-toxic lubricant is described. Also described are methods of using the composition, and processes of making it.

Claims

1. A non-toxic biodegradeable lubricant composition comprising: (a) from about 25 to about 45 weight percent white mineral oil; (b) from about 1 to about 10 weight percent alkylated naphthalenes; (c) from about 1 to about 5 weight percent dearomatized hydrocarbon fluids; (d) from about 1 to about 5 weight percent isoparaffins, and; (e) from about 40 to about 60 weight percent of a hydro-treated middle distillate, wherein each of (a)-(e) constitutes a separate component of said lubricant composition.

2. The lubricant composition of claim 1, comprising from about 30 to about 45 weight percent white mineral oil.

3. The lubricant composition of claim 1, comprising from about 40 to about 45 weight percent white mineral oil.

4. The lubricant composition of claim 1, comprising from about 3 to about 10 weight percent alkylated naphthalenes.

5. The lubricant composition of claim 1, comprising from about 3 to about 5 weight percent alkylated naphthalenes.

6. The lubricant composition of claim 1, comprising from about 1 to about 3 weight percent dearomatized hydrocarbon fluid.

7. The lubricant composition of claim 1, comprising from about 1 to about 2 weight percent dearomatized hydrocarbon fluid.

8. The lubricant composition of claim 1, comprising from about 1 to about 3 weight percent isoparaffins.

9. The lubricant composition of claim 1, comprising from about 1 to about 2 weight percent isoparaffins.

10. The lubricant composition of claim 1, comprising from about 50 to about 60 weight percent hydrotreated middle distillate.

11. The lubricant composition of claim 1, consisting of: (a) 40.5 weight percent white mineral oil; (b) 4.5 weight percent alkylated naphthalenes; (c) 1.5 weight percent isoparaffins; (d) 1.5 weight percent dearomatized hydrocargbon fluids; and (e) 52.0 weight percent hydrotreated middle distillates.

Description

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(1) The compositions of the invention comprise biodegradable hydrocarbons. More specifically, they comprise white mineral oil such as Duoprene 350, a mixture of alkylated naphthalenes, such as Synesstic AN, a mixture of isoparaffins, such as Isopar M, a mixture of dearomatized hydrocarbon fluids, such as Exxsol 95, and, an appropriate solvent for the foregoing materials, such as the hydrotreated middle distillate, Conosol 260. See, e.g., U.S. Pat. Nos. 7,820,187; 9,220,053; 9,149,772; 9,138,409; and 9,012,515, all of which are incorporated by reference, for further information on the preferred embodiments of the composition. Preferably, the compositions of the invention contain from about 25-45 weight percent of white mineral oil, more preferably 30-45 weight percent, and more preferably 40-45 weight percent. (All reference to percent made herein refer to weight percent relative to the composition.) Further, the composition comprises from about 1 to about 10, more preferably from about 3 to about 10, and more preferably from about 3 to about 5 weight percent alkylated naphthalenes. The composition further comprises from about 1 to about 5, more preferably from about 1 to about 3, and more preferably from about 1 to about 2 weight percent of each of the dearomatized hydrocarbon fluid and isoparaffins. The composition also comprises from about 20 to about 70, more preferably from about 40 to about 60, and most preferably from about 50 to about 60 weight percent of a hydrotreated middle distillate.

(2) A preferred embodiment of the composition contains the following components, given in weight percent:

(3) TABLE-US-00001 Duopreme 350: 40.5 Synesstic AN 4.5 Isopar M: 1.5 Exxsol D95: 1.5 Conosol 260 52.0
Additional materials may be added, such as an aerosolizing agent, (e.g., a propellant), perfuming or other inactive ingredients, biodegradable dyes, and so forth, which will be clear to the skilled artisan.

(4) Other embodiments of the invention will be clear to the skilled artisan and will not be elaborated herein.

(5) The terms and expression which have been employed are used as terms of description and not of limitation, and there is no intention in the use of such terms and expression of excluding any equivalents of the features shown and described or portions thereof, it being recognized that various modifications are possible within the scope of the invention.