| 摘要 |
PROBLEM TO BE SOLVED: To provide a door sealant having less odor than the conventional door sealant which is a minor source of odor in an automobile cabin. SOLUTION: An odor source substance of an EPDM solid rubber automobile door sealant 3 was found to be amines formed by the decomposition of a curing accelerator. Therefore, this problem was solved by adding a compound which combines with these amines to form nonvolatile substances, a compound which adsorbs these amines or the like. As the compound which combines with these amines, isocyanates and azo compounds which form isocyanic acid by decomposition can be mentioned. As the azo compound, azodicarbonamide can be mentioned. Its adding level is 0.001-2 pts.wt., preferably 0.1-0.5 pt.wt. As the amine adsorbent, a sepiolite-based mineral and ground coal can be mentioned. Their adding levels are 0.1-40 pts.wt. in total, preferably 5-20 pts.wt. COPYRIGHT: (C)2005,JPO&NCIPI
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