| abstract |
A composition which comprises a mixture of: (a) an alkali metal silicate having an SiO2/M2O mole ratio of 2 to 5, (b) a hydrophilic silicic acid or silicate in the form of fine particles, and (c) a silane coupling agent, or an ortho-acid ester of a transition element in Group IV of the Periodic Table or a derivative of the ester forms hydrophilic coatings which are outstanding in durability, corrosion resistance and adhesion. |