CURABLE ORGANOSILOXANE COMPOSITION OF LONG STORAGE LIFE AND CURED ELASTOMER OF LONG DIE LIFE MADE THEREOF

摘要

PROBLEM TO BE SOLVED: To obtain a curable organosiloxane composition of long storage life that has prolonged storage life of a curing agent in the composition can provide hardened organosiloxane elastomer of long die life by adding small quantity of polybutene to curable components. ;SOLUTION: This curable organosiloxane composition of long storage life comprises (A) curable liquid polyorganosiloxane having at least two silanol groups, (B) organosilicon compound containing a hydrolyzable group bonded to at least three silicon atoms in a quantity of 0.8-6wt.%, (C) a tin compound in a quantity of 0.05-3wt.%, sufficient to accelerate the curing of the combination of components A and B (e.g., stannous acetate), and (D) polybutene of number- average molecular weight less than 600 and viscosity less than 100mPa.s at 38°C, in a quantity of 2-20wt.%, respectively, based on the weight of component A, and preferably the composition contains water.;COPYRIGHT: (C)1998,JPO