Sept. 1, 1970 J
Sept. 1, 1970 J. E. OLIVER, JR 3,526,593 PIPE THREAD SEALANT CONTAINING POLYTETRAFLUOROETHYLENE 2, 1964 Z?4 ????? ????? / ) AT ToRNE 3,526,593 United States Patent Office Patented Sept. 1, 1970 2 in use in threaded joints or connections gives an effective 3,526,593 Seal and prevents leakage at pressures as high as 15,000 PIPE THREAD SEALANT CONTAINING lbs. per Square inch or more. The use of the pipe thread POLYTTETRAFLUOROETHYLENE dope in threaded joints or connections also serves as a John E. Oliver, Jr., Lafayette, La., assignor to Chevron lubricant which permits such joints or connections to be Research Corporation, a corporation of Delaware made up or separated without the disadvantages of freez Continuation of application Ser. No. 335,137, Jam. 2, ing, galling or stripping of threads often encountered when 1964. This application Dec. 15, 1967, Ser. No. 691,062 pipes are assembled or disassembled in high pressure Imt. CI. C10m 5/16, 5/02 drilling and producing operations. U.S. C. 252-23 4 Claims The calcium salts of fatty acids containing from 10 to O 22 carbon atoms are thickening agents which provide a ABSTRACT OF THE DISCLOSURE grease-like consistency to the oil of lubricating viscosity. Pipe thread sealant and lubricant consisting of 33-80% Such thickening agents are exemplified by the calcium of ground polytetrafluoroethylene resin, 0.5-10% calcium salts of capric acid, lauric acid, myristic acid, palmitic 5 acid, oleic acid, Stearic acid, 12-hydroxystearic acid, salt of fatty acid containing 10-22 carbon atoms, 1-10% hydrogenated ricinoleic acid, arachidic acid, behenic acid, of calcium acetate and calcium carbonate combined, 0.1- etc.
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