Accession Number : AD0163593


Title :   Grease Compositions.


Descriptive Note : Patent,


Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C


Personal Author(s) : Messina,Joseph F. ; Gisser,Henry


Report Date : 23 MAY 1972


Pagination or Media Count : 3


Abstract : The patent describes stable grease compositions for use with equipment at extremely low temperatures. The greases consisting of about 69 to 78 weight percent polysiloxanes, the balance being tetrafluoroethylene polymer having a molecular weight of 10,000 - 50,000 . They have a softening point of 321.1 percent, particle size less than 30 microns in diameter, and are supplied as a 7.5 percent suspension in trichlorotrifluoroethane. They are chemically and physically stable over a wide range of conditions. The polysiloxanes include polydimethylsiloxane, polymethylchlorophenylsiloxane, hexa(2-ethylbutoxy) disiloxane.


Descriptors :   (*PATENTS, LOW TEMPERATURE LUBRICANTS), (*GREASES, *LOW TEMPERATURE LUBRICANTS), (*SILOXANES, GREASES), POLYMERS, FLUORINE COMPOUNDS, VISCOSITY, ANTIOXIDANTS, THERMAL STABILITY, MECHANICAL PROPERTIES


Subject Categories : LUBRICANTS AND HYDRAULIC FLUIDS


Distribution Statement : APPROVED FOR PUBLIC RELEASE