| 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 2 ClF 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. |