The rubber constituent which includes the inorganic porous micro capsule which restoration or

摘要

PROBLEM TO BE SOLVED: To obtain the subject microcapsules capable of raising the curing rate of a rubber composition compounded therewith without declining in processability and operability by filling or impregnating inorganic porous particles with a specific amine compound. ;SOLUTION: The microcapsules are obtained by filling or impregnating (A) inorganic porous particles each with a size of pref. 0.5-100 μm, more pref. 0.5-50 μm, furthermore pref. 0.5-30 μm with (B) as core substance, an amine compound pref. ≤150°C in boiling point represented by the formula (R1 to R3 are each H or a 1-22C alkyl); wherein the inorganic material constituting the component A is e.g. an alkaline earth metal silicate such as magnesium silicate, metal oxide such as titanium oxide, alkaline earth metal carbonate such as magnesium carbonate, and the component B is pref. butylamine, amylamine, hexylamine, diethylamine or the like.;COPYRIGHT: (C)2001,JPO