| 摘要 |
An aqueous composition consisting of: (i) an alkyl polysaccharide surfactant; (ii) an alkoxysilane selected from the group consisting of gamma-amino propyl triethoxysilane and gamma-glycidoxypropyl trimethoxysilane; (iii) water; (iv) optionally alcohol, solely from hydrolysis of the alkoxysilane; and (v) optionally, one or more components selected from the group consisting of biocides, antifoams and adhesion promoters, and its use in a method of coating a metal surface with a silane coating, which method comprises (A) contacting a metal surface with the composition to deposit the alkoxysilane on the metal and (B) drying the metal surface with the alkoxysilane deposited thereon, to produce on the metal surface, a coating comprising a hydrophobic, interlocking network of covalent siloxane bonds. The coated metal is resistant to corrosion.
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