| 摘要 |
<p>There is disclosed a water-swelling composition which comprises a low molecular polyolefinpolyol-ethylene oxide addition product, a water-absorbing polymer and an isocyanate. The composition contains a water-absorbing polymer in an amount of from 5 to 200 parts by weight and an isocyanate in an amount of from 5 to 50 parts by weight, per 100 parts by weight of a low molecular polyolefinpolyolethylene oxide addition product. The composition can be used as a sealant in places which must be water or moisture tight in vehicles, buildings and various machines since it is capable of speedily swelling when contacted with water.</p> |
