| 摘要 |
<p>The present invention relates to a water-soluble coating for provisionally covering and protecting surfaces comprising 12-20% of polyvinyl alcohol, 73-79% of water, 0.5-3% of a glycol ether, 0.5-3% of an organic non-migrant plasticizer, from 0.05 to 3% of a thixotropic agent, 0-1% of a defoamer, 0-1% of a preservative, 0-0.2% of a dye, all percentages being expressed by weight.</p> |
