Curable perfluoropolyether adhesive composition and adhesive and adhesive tape using cured product thereof

A curable perfluoropolyether adhesive composition comprising:

• (A) a linear perfluoropolyether compound having at least two alkenyl groups per molecule and having a perfluoropolyether structure containing a repeating unit represented by —CaF2aO— in a main chain, wherein “a” represents an integer of 1 to 6:
• 100 parts by mass;
• (B) a fluorine-containing organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule:
• an effective curing amount;
• and
• (C) a hydrosilylation-reaction catalyst:
• a catalytic amount,
• wherein the curable perfluoropolyether adhesive composition does not contain any organic solvent in the composition.

A curable perfluoropolyether adhesive composition comprising:

• (A) a linear perfluoropolyether compound having at least two alkenyl groups per molecule and having a perfluoropolyether structure containing a repeating unit represented by —CaF2aO— in a main chain, wherein “a” represents an integer of 1 to 6:
• 100 to 40 parts by mass;
• (D) a polyfluoromonoalkenyl compound having one alkenyl group per molecule and having a perfluoropolyether structure in a main chain:
• 0 to 60 parts by mass, wherein the components (A) and (D) are in an amount of 100 parts by mass in total;
• (B) a fluorine-containing organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule:
• an effective curing amount;
• and
• (C) a hydrosilylation-reaction catalyst:
• a catalytic amount,
• wherein the curable perfluoropolyether adhesive composition does not contain any organic solvent in the composition.