| 摘要 |
<p>PURPOSE: To obtain a catalyst for removing impurities and residual moisture in organic dry cleaning solvents, petroleum fuel or the like by adopting a mixture of solid fumalic acid and solid barium chromate. CONSTITUTION: A mixture of solid fumalic acid and solid barium chromateis is used as a catalyst for removing impurities and residual moisture in various substances such as organic dry cleaning solvents, petroleum fuel or the like. On the occasion, the weight ratio is made as nearly five of the solid fumalic acid vs. nearly one of the solid barium chromate. And, by bringing solvents, to which aromatic hydrocarbons are added, into contact with this catalyst, residual moisture in the solvents is effectively removed. Reprecipitation on garments being washed is thus prevented, it is possible to wash better in efficiency.</p> |
