Patent ID: 7671160

Claim:
A curable perfluoropolyether composition comprising: (A) 25 to 65 parts by weight of a linear perfluoropolyether compound comprising at least two alkenyl groups per molecule and having a perfluoropolyether backbone structure comprising recurring units —C a F 2a O—, wherein a is an integer of 1 to 6, (E) 75 to 35 parts by weight of a polyfluoromonoalkenyl compound comprising one alkenyl group per molecule and having a perfluoropolyether backbone structure, wherein the total amount of components (A) and (E) is 100 parts by weight, (B) a curing amount of an organosilicon compound comprising at least two silicon-bonded hydrogen atoms per molecule, (C) 0.1 to 50 parts by weight of a powdered component comprising a powdered hydrotalcite compound, wherein said powdered component (C) is capable of chemical and/or physical adsorption of acidic gas and/or a gas comprising sulfur, and (D) a catalytic amount of a hydrosilylation catalyst, wherein the curable perfluoropolyether composition is an non-conductive gel having a volume resistivity of at least 1×10 9 Ω·cm upon curing.