| abstract |
A room temperature curable organopolysiloxane composition including: (A) 100 parts by weight of a diorganopolysiloxane represented by the general formula (1): HO[Si(R1)2O]nH (1) wherein R1 represents a substituted or unsubstituted monovalent hydrocarbon group, and n is an integer of 15 or more; (B) from 0.1 part by weight to 20 parts by weight of an organosilane, or a partially hydrolyzed product thereof, represented by the general formula (2): (R2)mS(OR2)4-m (2) wherein R2's each independently represent a substituted or unsubstituted monovalent hydrocarbon group, and m is 0, 1 or 2; (C) from 0.01 part by weight to 10 parts by weight of a curing catalyst; (D) from 20 parts by weight to 600 parts by weight of a magnesium silicate; and (E) from 5 parts by weight to 80 parts by weight of a paraffin type aliphatic hydrocarbon which is liquid or semi-solid at room temperature. This composition can be rapidly cured, even after a long-term storage. |