| 摘要 |
<p>Calcitic and/or siliceous architectural and construction materials are provided with increased resistance to damage from water, oil, grease and weather by a process which comprises treating said materials with an aqueous composition containing: (A) from about 0.1 to 4 % by weight on a 100 % solids basis of an aqueous solution or self-dispersed emulsion or dispersion of a copolymer which is a reaction product of monomers containing fluorinated groups, cationic groups and nonionic groups, (B) an effective amount of a penetration assistant, and (C) water to make up 100 %.</p> |
