Claims
- 1. A process for adhering a thermoplastic fluororesin film to a metal surface comprising applying to the metal surface a primer composition comprising a solution or a dispersion in an organic solvent of (a) a polyether sulfone, (b) a fluorinated resin, (c) at least one polymer selected from the group consisting of a polyamideimide, and a polyimide, and (d) a particulate aluminum metal or alloy, in which the proportion of the polyether sulfone to one or both of polyamideimide and polyimide is from 55:45 to 95:5 by weight and the ratio of the total polyether sulfone and one or both of polyamideimide and polyimide to the fluororesin is 20:80 to 70:30 by weight, and in which the particulate aluminum metal or alloy is in the form of flake and is present in an amount of 1-15% based on the solids of the composition by weight and applying onto said layer a thermoplastic fluororesin film by hot melt adhesion.
- 2. A process of claim 1 in which the fluororesin comprises at least one resin selected from the group consisting of tetrafluoroethylene/hexafluoropropylene copolymer, and tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 08/182,633 filed Jan. 26, 1994, now abandoned.
US Referenced Citations (25)
Foreign Referenced Citations (4)
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Date |
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0 343 015 |
Nov 1989 |
EPX |
0 389 966 |
Oct 1990 |
EPX |
WO9102773 |
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WO9210309 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
182633 |
Jan 1994 |
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