Two-component type room temperature fast-curing organopolysiloxane composition and article

A two-pack type room temperature fast-curable organopolysiloxane composition consisting of:

• a first pack comprising
• (A) 10 to 90 parts by weight of an organopolysiloxane having the following general formula (1), (2), or (3):
• wherein R is the same or different and is an unsubstituted or halogen atom-substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n is an integer of 5 or more,
• wherein R and n are as described above, n may be the same or different, and m is an integer of 1 to 10,
• wherein R and n are as described above, X is an oxygen atom or an alkylene group having 2 to 5 carbon atoms, and k is 0 or 1 independently for each silicon atom to be bonded,
• with the proviso that the total amount of the components (A) and (A′) is 100 parts by weight,
• (B) a hydrolyzable organosilane compound having the following general formula (4) and/or a partial hydrolytic condensate thereof, in an amount of 0.1 to 30 parts by weight per 100 parts by weight of the total of the components (A) and (A′),
• wherein R1 is a monovalent hydrocarbon group having 1 to 10 carbon atoms, a is an integer of 1 to 8, and b is 3 or 4, and
• (C) a curing catalyst in an amount of 0.001 to 10 parts by weight per 100 parts by weight of the total of the components (A) and (A′), and
• a second pack comprising
• (A′) 10 to 90 parts by weight of an organopolysiloxane having the following general formula (1) or (2):
• wherein R is the same or different and is an unsubstituted or halogen atom-substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n is an integer of 10 or more,
• wherein R and n are as described above, n may be the same or different, and m is an integer of 1 to 10,
• with the proviso that the total amount of the components (A) and (A′) is 100 parts by weight.