| 摘要 |
<p>An aqueous, curable coating composition comprising a mixture of: (a) at leas t one water-soluble alkali metal silicate and (b) an effective amount of a wat er- soluble crosslinking agent comprising an alkali metal aluminophosphate, or a n alkali metal aluminoborophosphate, or an ammonia aluminophosphate, or an ammonia aluminoborophosphate, or an alkali metal ammonia aluminophosphate, a n alkali metal ammonia aluminoborophosphate, or a mixture of two or more of th e foregoing phosphates. The coating composition will often not contain any visually discernible precipitate. The coating composition may be applied to a substrate, such as a glass, a ceramic, concrete or a metal and thereafter cured by air drying or by heating to a temperature of up to about 240~C (or higher, if desired).</p> |
