| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition that can give a sealing material having suitable elasticity and oil resistance by dispersing a crosslinked condensate powder obtained by the condensation reaction of a 2,4-diamino-1,3,5-triazine compound with formaldehyde in a polysulfide-type polymer. SOLUTION: This composition is obtained by dispersing 5-30 pts.wt. crosslinked condensate powder obtained by the condensation reaction of a 2,4- diamino-1,3,5-triazine compound represented by the formula (wherein X is an alkyl, phenyl, or amino) with formaldehyde in 100 pts.wt. polysulfide-type polymer. The composition may additionally contain fillers such as a flame retardant, a reinforcing agent, a colorant, and an extender within the scope not detrimental to oil resistance and elasticity. The compound represented by the formula is desirably benzoguanamine (X: phenyl), melamine (X: amino), 1-methyl-2,4- diaminotriazine (X: methyl), or the like.
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