Patent ID: 6713205
Filing Date: 2004-03-30
Classification: C08G,C08K,C08L,Y02E,Y10T

Abstract:
A solid polymer fuel cell comprising a separator, said separator comprising a sealing material for sealing edges on at least one side of said separator, said sealing material comprising(A) 100 parts by weight of an organopolysiloxane with at least two alkenyl groups bonded to silicon atoms within each molecule, (B) 0.1 to 30 parts by weight of an organohydrogenpolysiloxane with at least two hydrogen atoms bonded to silicon atoms within each molecule, (C) 10 to 50 parts by weight of a fumed silica with a specific surface area of 50 to 250 m2/g (as measured by a BET method) which has undergone surface treatment with at least two different surface treatment agents, and (D) an effective quantity of an addition reaction catalyst.