| 摘要 |
PROBLEM TO BE SOLVED: To improve various performances required for a non-drying sealer filled into a weather strip used in a joining part of a vehicle by a simple formulation using materials having no problem on the environment. SOLUTION: This sealing material composition for automobiles contains, as essential components, a liquid oligomer and an oligomer with a structure having an alkoxysilyl group at the terminal of a main chain. As the liquid oligomer, a polyoxyolefin, especially, a polyoxypropylene having a molecular weight of 1,000-6,000 is preferable. The structure of the main chain of the oligomer with the structure having an alkoxysilyl group at the terminal of the main chain is a polyoxyolefin, especially, a polyoxypropylene having a molecular weight of 1,000-10,000. Alternatively, the structure of the main chain of the oligomer with the structure having an alkoxysilyl group at the terminal of the main chain is a polyisobutylene structure or an acrylic resin structure. COPYRIGHT: (C)2009,JPO&INPIT
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