| abstract |
A hardening composition comprises a polymer having two or more thiol groups within one molecule, a compound having two or more isocyanate groups within one molecule, and a carbon black, and further comprises a filler having silicic acid or silicate as main component, or an organic filler having pulverized coal as main component. The hardening composition may form a hardened product having good storage stability of main agent, good hardenability after the storage of the main agent, sufficient breaking strength, hardness and gas barrier properties, and thus is suitable as the sealing material for multi-layer glass and window frame of automobile. Preferably, the hardening composition according to the present invention can be a high performance hardening composition having excellent mechanical strength and gas barrier property by using a hydrocarbon-based plasticizer and an organic metallic compound. |