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US3956570A Method for imparting water-repellency to construction materials 失效
赋予建筑材料防水性的方法

Method for imparting water-repellency to construction materials
摘要:
A method for imparting water repellency to construction materials which comprises treating said materials with a solution containing alkali metal organosiliconates of which at least 10 percent of the alkali metal organosiliconates are alkali metal propylsiliconates.
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