| 摘要 |
<p>A plaster composition contains (A) 30 to 60% by weight of calcium sulphate hemi-hydrate and optionally cement, (B) 0.25 to 15% of a polymer, esp. a polyindene, (C) 4 to 48% of an organic solvent and (D) 20 to 50% of water. The plaster is quick drying, has greatly improved resistance to water, and can be used with a metal reinforcement.</p> |
