| 摘要 |
<p>Phosphate conversion coating accelerators consisting essentially of amidosulfonic acid, N-substitution products and salts thereof, sulfonamides, 1,2,3,-oxathiazin-4(3H)-one salts or 6-alkyl derivatives thereof, and ortho-aniline sulfonic acid or its derivatives alkyl-substituted on the ring and salts thereof, and mixtures of the foregoing, and a process for their use.</p> |
