| 摘要 |
Polyethylene of M.W. 2000 is emulsified in water with N-methyl morpholine and oleic acid; to this emulsion is added an aqueous dispersion of P.T.F.E. The mixture is used to produce coatings comprising a continuous binder of polyethylene containing discrete particles of P.T.F.E.ALSO:A blade, such as a razor blade of carbon steel or stainless steel, scissor or knife blade or surgical instrument is coated with a polyethylene resin. The resin may be an ethylene homopolymer or a copolymer with another olefinic or vinyl monomer. In the preferred embodiment, a continuous polyethylene coating containing particles of polytetrafluoroethylene is formed by applying a mixture of a polyethylene emulsion and a PTFE dispersion to razor blades. The coating may be applied by brushing, dipping or spraying: the blade may first be de-greased, both the blade and the coating solution or dispersion may be preheated, and the coated blade may finally be heated to 275-325 DEG F. |
