Process for preparing lubricating greases based on polytetrafluo

Details Process for preparing lubricating greases based on polytetrafluo Process for preparing lubricating greases based on polytetrafluo

1982-10-05

1984-09-18

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 499, 252 58, C10M 520, C10M 524, C10M 528

Patent

active

044722907

ABSTRACT:
A lubricating grease consisting of a mixture containing from 15% to 40% by weight of polytetrafluoroethylene, from 60% to 85% by weight of a liquid dispersing medium of the type of perfluoropolyether or oligomer of C.sub.2 ClF.sub.3, less than 1% by weight of a perfluoroalkyl or polyoxyperfluoroalkyl surfactant and, optionally, stabilizing and anticorrosive agents of the class of polyoxyperfluoroderivatives, said mixture being subjected to grinding in order to obtain the disaggregation of the polytetrafluoroethylene granules into primary particles not larger than 1 micron.

REFERENCES:
patent: 3723317 (1973-03-01), Ulery
patent: 3784471 (1974-01-01), Kaiser
patent: 4011267 (1977-03-01), Tamborski et al.
patent: 4194983 (1980-03-01), Paciorek et al.

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