Patent ID: 8088852

Claim:
An oily surface adhesive room temperature curing organopolysiloxane composition, comprising: (A) 100 parts by weight of at least one selected from the group consisting of organopolysiloxanes represented by the following formulas (1) to (4), wherein R is a methyl or ethyl group, R 1 is an unsubstituted or substituted monovalent hydrocarbon group of 1 to 10 carbon atoms, X is an integer of at least 10, Y is an oxygen atom or an alkylene group of 1 to 5 carbon atoms, and numbers N are each independently an integer of 0 or 1, wherein R, R 1 , X, Y, and N are the same as above, and Z is an alkenyl group of 2 to 5 carbon atoms, wherein R, R 1 , X, Y and N are the same as above, d is an integer of 1 to 10, and R 2 is a branched group containing a hydrolyzable group represented by the following formula, wherein R, R 1 , Y and N are the same as above, wherein R, R 1 , R 2 , X, Y, Z, N and d are the same as above; (B) 10 to 150 parts by weight of a heavy calcium carbonate surface treated with at least one of a fatty acid and a paraffin treating agent; (C) 1 to 30 parts by weight of an oil-absorbing carbon powder; (D) 1 to 25 parts by weight of a silane represented by the following formula (5), R 3 4-n SiK n (5) wherein R 3 is independently an unsubstituted or substituted monovalent hydrocarbon group, K is a hydrolyzable group, and n is an integer of 3 or 4, or a partial hydrolyzate; (E) 0.01 to 15 parts by weight of a curing catalyst; and (F) 0.1 to 10 parts by weight of at least one organic compound selected from the group consisting of ethyl isocyanate, isopropyl isocyanate, propyl isocyanate, butyl isocyanate, sec-butyl isocyanate, tert-butyl isocyanate, phenyl isocyanate, benzyl isocyanate, cyclopentyl isocyanate and p-tolyl isocyanate; and wherein the composition comprises a mixture of organopolysiloxanes of formula (1) and (2) wherein the organopolysiloxane of formula (2) is present in an amount of no more than 30% by weight based on the total amount of the organopolysiloxanes of component (A).