| 摘要 |
For printing on a perfluorocarbon resin surface, an ink comprises a pigment and a hexafluoropropylene/tetrafluoroethylene interpolymer co-dispersed in a volatile liquid. The pigment may be carbon black, phthalocyanine, or titanium dioxide. The liquid may be tetrachloroethylene, perchloroethylene, hexane, toluene, xylene, chlorobenzene, acetone, methanol, ethyl acetate, or water containing an abluent. The interpolymer has the following physical properties:-crystalline melting point 242 DEG -305 DEG C., melt viscosity 1,5 X 103-3 X 105 as measured at 380 DEG C. under a shear stress of 6,5 lbs./sq. inches, particle size less than 5 microns.
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