To obtain a coating composition having excellent properties, stable viscosity, a long pot life and being capable of being freely controlled in its viscosity by including a fluororubber, a coating material stabilizer having a specified structure and a solvent.
This composition is prepared by dissolving 100 pts.wt. fluororubber such as a tetrafluoroethylene/propylene copolymer or a vinylidene fluoride/hexafluoropropylene/tetrafluoroethylene copolymer and 0.1-50 pts.wt. at least one coating material stabilizer selected among compounds of formulas I to IV [Rf is a 1-25 C polyfluoroalkyl; a 1-25 C polyfluoroalkyl terminated with a divalent SO2NR1 group (R1 is a 1-5 C alkyl); R2 to R5 are each a 1-8 C alkyl; at least one of them is hydroxyl; n is 1-8; R6 is a 1-22 C polyfluoroalkyl; R7 and R8 are each H or a 5 C or lower alkyl; and R10 is H or a 18 C or lower hydrocarbon group] and polyalkylene glycols in an organic solvent.
SHIOYA GENICHIROU
HONDA MAKOTO
NAKAZAWA AKIKO
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