| 摘要 |
<p>Novel paint solvents and paints thinned with such solvents are disclosed. In one disclosed embodiment the paint solvent is an aqueous solution containing a high concentration a strongly alkaline agent containing calcium ion as its main cation. Another solvent is disclosed which is a homogeneous blend of (a) an aqueous solution containing a high concentration a strongly alkaline agent having calcium as its main cation and (b) an an aqueous solution obtained by treating seawater with the strongly alkaline agent. The strongly alkaline agent contains at least 40% by weight calcium oxide and is a product obtained by calcining a calcium-containing natural substance such as shell, bone, limestone or mixture thereof.</p> |
