Title: Coatings for ferrous substrates

Abstract: Novel amorphous magnesia-silica complexes containing from about 0.001 to 2.0 percent by weight of an alkali metal oxide, wherein the mole ratio of MgO:SiO.sub.2 of said complexes is from about 1:25 to 14:1.

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Inventors: Lee, Leonard S. (Daly City, CA, US)
Uyeda, Yoshio (San Mateo, CA, US)
Sopp, Samuel W. (Foster City, CA, US)

Application Number: 570291
Filing Date: 1975-04-21
Publication_date: 1976-03-02
Assignee: Merck & Co., Inc. (Rahway, NJ)
Primary Class(es): 148/27 148/113, 148/243, 501/122
Other Classes:
US Patent Ref:

3151000	Sep, 1964	Schmidt et al.	148/113.
3215601	Nov, 1965	Stolar	423/331.
3562029	Feb, 1971	Goglio et al.	148/113.
3583919	Jun, 1971	Balint et al.	106/58.
3765957	Oct, 1973	Hamachi et al.	148/113.

Other Refs:
Primary Examiner: Douglas, Winston A.
Assistant Examiner: Wright, William G.
Attorney: Pfeiffer; Hesna J., Levitt; Julian S.